C6 K2 Finds
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by
Dolorous_Edd
You know the drill
The K2 C6 lightcurves are now online, thanks to Al Schmitt (HEK) for providing us with the long cadence PDCSAP_FLUX lightcurves for LcViewer.
Posted
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by
Dolorous_Edd
Possible glitch area at 2247
EPIC 212300977 - 2 dips; p = ~35d ; start 2245BKJD
another dip ~2259,6 BKJD and ~2277BKJD
EPIC 212268198 - maybe dip ~2460
EPIC 229228140 (Listed as QSO ) - not star! LC looks like CV
EPIC 212777236 - big flare 2426BKJD
Posted
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by
ajamyajax
All right, looking good! Most likely plenty of candidates to be found for those with lots of time, interest, and energy for this of course...
Re 212300977: and for starters this one is so good, it is already confirmed planet WASP-55 b...
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212300977 , 2MASS J13350194-1730124 , 10.775 , 10.443 , 10.396 , 0.332 , 0.047 , ('G6V', 0.97) , ('F0V', 1.58)
Posted
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by
zoo3hans
Ok, as usual I'll start from the last one and work towards the beginning of the list.
Glitches:
2386.26
2391.33
2393.41
2418.36
2423.52
2423.98
2427.75
2447.14
PC candidates:
EPIC 212601505 P=0.7245 days, starting at BKJD 2384.86, depth 0.03, duration 1.5 - 2 hours
EPIC 212613520 Maybe single transit at BKJD 2427.88 , but could also be the glitch around 2427.75
EPIC 212628098 P=4.3526 days, starting at BKJD 2385.995, depth 0.055, duration about 2 hours
EPIC 212639080 Maybe single transit at BKJD 2389.75, depth 0.022, duration about 7.5 hours
EPIC 212645891 P=0.32815 days, starting at BKJD 2384.709, depth 0.0021, duration about 2 hours
EPIC 212651234 Very interesting EB with P=5.0767 days with additional transits, maybe planetary ones, depth 0.0247, duration about 6 hours, eccentrical orbit, time differences 5.31 days and 7.88 days, at BKJD 2389.97, 2395.27, 2403.15, 2408.47, 2416.36, 2421.67, 2429.55, 2434.87, 2442.75, 2448.06, 2455.95, 2461.25 - EPIC 212651213 looks exactly the same, so maybe we have a blend of 2 different EB's here.
EPIC 212657240 P=19.9 days, starting at BKJD 2397.4, depth 0.0009, duration about 4 hours (but looks NOT good in the corrected LC)
EPIC 212658818 P=2.3206 days, starting at BKJD 2384.44, depth 0.0035, duration about 3.7 hours
EPIC 212672300 P=39.7 days, starting at 2410.02, depth 0.001, duration about 8.5 hours
EPIC 212681038 Maybe single transit at BKJD 2405.42, depth 0.002, duration about 7 hours
EPIC 212684857 2 transits by an extented source, period 47.095 days, at BKJD 2397.57 and 2444.57, depth 0.0035, duration about 2.5 days , seen too in C17
EPIC 212685467 Maybe single transit at BKJD 2409.65, depth 0.01, duration 7 - 8 hours
EPIC 212686777 Maybe single transit at BKJD 2387.14, depth 0.036, duration about 6 hours
EPIC 212688920 P=62.83 days, starting at BKJD 2387.24, depth 0.045, duration about 3.5 housr, a bit V-shaped, rather deep transits, so might be an EB
EPIC 212689874 P=15.855 days, starting at BKJD 2392.05, depth 0.0013, duration about 5 hours, U-shaped, second planet: P2=28.46 days, starting at BKJD 2410.02, depth 0.0007, duration about 6.5 hours
EPIC 212691727 P=12.864 days, starting at KJD 2386.52, deep U-shaped transits, depth 0.06, duration about 5.5 hours, small secondaries can been too, so probably it's an EB
EPIC 212694013 Beautiful single transit at BKJD 2409.25 , depth 0.006, duration about 1.5 days, U-shaped
EPIC 212697709 P=3.9516 days, starting at BKJD 2385.29, depth 0.0075, duration 2.5 hours, this looks like another nice Hot Jupiter, now confirmed in http://arxiv.org/pdf/1603.05638v1.pdf
EPIC 212698055 P=38.24 days, starting at BKJD 2392.24 to 2392.79, depth 0.00025, duration about 13.5 hours
EPIC 212705192 P=2.2684 days, starting at BKJD 2386.61, depth 0.007, duration about 3 hours
(EPIC 212710197 Maybe transit at BKJD 2391.33, depth 0.0034, duration about 4 hours, with a possible repeat at BKJD 2448.90, which would give a period of 57.57 days - Hm, it could also be a glitch, since we have
EPIC 212708867 with a similar featute at BKJD 2391.33 and also EPIC 212689553)EPIC 212710758 Maybe single transit at BKJD 2399.62 to 2400.42
EPIC 212737443 P=13.60 days, starting at BKJD 2388.38, depth 0.0018, duration 4 hours, additional longer dip (duration about 6 hours) at BKJD 2394.82 and BKJD 2460.34 which would give P2=65.52 days
EPIC 212737569 Maybe single transit at BKJD 2435.52
EPIC 212756297 P=1.3376 days, starting at BKJD 2385.1, depth 0.0325, duration 2.5 hours
( EPIC 212757004 P=4.459375 days, appearantly contamination by EB EPIC 212757039 )
EPIC 212757601 P=1.0179 days, starting at BKJD 2385.015, depth 0.013, duration 2.5 hours
EPIC 212768333 Multiplanet system, P1=17.05 days, starting at BKJD 2388.61, depth 0.0024, duration 3.5 hours, P2=7.45 days, starting at BKJD 2388.02, depth 0.0008, duration 3.5 hours, even additional dips at BKJD 2385.885, 2402.92 and more.
EPIC 212777123 Maybe single transit at BKJD 2426.63, depth 0.0009, duration about 8 hours
EPIC 212797028 P=29.9825 days, starting at BKJD 2397.46, depth 0.019, duration about 6.5 hours
EPIC 212803289 P=18.248 days, starting at BKJD 2400.85, depth 0.0023, duration about 12 hours, now confirmed in http://arxiv.org/abs/1609.00239
EPIC 229227766 Dips at BKJD 2387.16 and 2425.59 with a possible period of 38.43 days.
EB candidates:
EPIC 212307101 Single eclipse at BKJD 2424.09 , depth 0.5 (!), duration about 2 hours
EPIC 212603536 P=0.72 days
EPIC 212610849 P=28.47 days, maybe contamination though because the eclipse depth is very small
EPIC 212613128 P=0.75967 days
EPIC 212615080 P=7.375 days
EPIC 212617879 P=4.42176 days
EPIC 212619142 P=0.44596 days
EPIC 212623206 P=0.23701 days
EPIC 212627712 P=19.913 days, depth 0.065, duration 2.5 hours, no secondaries visible, maybe PC if the star is very small
EPIC 212633681 P=8.83857 days
EPIC 212645173 P=6.97855 days
EPIC 212651213 See below
EPIC 212651234 Very interesting EB with P=5.0767 days with additional transits, maybe planetary ones, depth 0.0247, duration about 6 hours, eccentrical orbit, time differences 5.31 days and 7.88 days, at BKJD 2389.97, 2395.27, 2403.15, 2408.47, 2416.36, 2421.67, 2429.55, 2434.87, 2442.75, 2448.06, 2455.95, 2461.25 - EPIC 212651213 looks exactly the same, so maybe we have a blend of 2 different EB's here.
EPIC 212652663 P=3.3393 days
EPIC 212653474 P=0.3332 days
EPIC 212654158 P=0.27787 days
EPIC 212654542 P=0.505 days
EPIC 212655748 P=0.353 days
EPIC 212657240 P=72.80 days
EPIC 212660912 P=0.5233 days
EPIC 212664590 P=14.6975 days
EPIC 212666524 P=0.671 days
EPIC 212669952 P=0.602 days
EPIC 212670711 P=0.6755 days
EPIC 212675893 P=0.620 days
EPIC 212676084 P=3.9025 days
EPIC 212678026 P=10.353 days
EPIC 212679798 P=1.83475 days
EPIC 212687040 P=1.854 days
EPIC 212690365 P=0.335 days
EPIC 212694259 P=66.58 days
EPIC 212697951 P=3.8244 days
EPIC 212701118 P=2.4333 days
EPIC 212702889 P=0.63067 days
EPIC 212703881 P=0.352 days
EPIC 212707624 P=7.21 days
EPIC 212708296 P=0.8045 days
EPIC 212708783 P=2.25325 days
EPIC 212712870 P=0.4949 days
EPIC 212715425 P=0.3616 days
EPIC 212722872 P=0.3467 days
EPIC 212725385 P=1.887 days
EPIC 212727054 P=15.4983 days, i.e. probably contamination by EPIC 212727070
EPIC 212727070 P=15.4983 days
EPIC 212732378 Maybe eclipse at BKJD 2396.79
EPIC 212732420 P=0.2733 days
EPIC 212737890 P=0.44045 days
EPIC 212740148 P=0.7395 days
EPIC 212747393 P=0.952 days
EPIC 212747879 P=1.411 days
EPIC 212757039 P=4.459375 days
EPIC 212760038 P=0.599375 days
EPIC 212763178 P=0.30 days
EPIC 212764154 P=0.245294 days
EPIC 212764197 P=0.456 days
EPIC 212766965 P=0.2643 days
EPIC 212770429 P=40.47 days
EPIC 212772327 P=26.405 days
EPIC 212773061 P=0.285 days
EPIC 212773309 P=4.6816 days
EPIC 212775692 P=0.641 days
EPIC 212776502 P=0.2701 days
EPIC 212782724 P=0.212 days
EPIC 212786474 P=9.2714 days
EPIC 212786799 P=0.4932 days
EPIC 212787100 P=0.806 days
EPIC 212788116 P=9.2514 days
EPIC 212796787 P=0.1487 days
EPIC 212799836 P=0.56 days
EPIC 212801119 P=0.3938 days
EPIC 212801667 P=23.275 days
EPIC 212805198 P=3.22854 days
EPIC 212805678 Very nice giant EB
EPIC 212812349 P=8.16875 days
EPIC 212822491 P=14.32 days.
EPIC 212839127 P=20.6467 days
EPIC 212841253 P=0.7545 days
EPIC 212841717 P=0.4682 days
RR_Lyrae:
EPIC 212603999
EPIC 212607355
EPIC 212614745
EPIC 212614766
EPIC 212622156
EPIC 212626187
EPIC 212631030
EPIC 212639395
EPIC 212639932
EPIC 212643422
EPIC 212643647
EPIC 212646482
EPIC 212648408
EPIC 212649058
EPIC 212652735
EPIC 212661557
EPIC 212668141
EPIC 212688460
EPIC 212692525
EPIC 212693014
EPIC 212698817
EPIC 212699568
EPIC 212699845
EPIC 212707714
EPIC 212712239
EPIC 212717166
EPIC 212719863
EPIC 212724347
EPIC 212725898
EPIC 212726491
EPIC 212727382
EPIC 212734072
EPIC 212746631
EPIC 212753920
EPIC 212755221 Maybe short period Cepheid
EPIC 212763021
EPIC 212763847
EPIC 212765214
EPIC 212766147
EPIC 212773156
EPIC 212775050
EPIC 212780441
EPIC 212784103
EPIC 212785152
EPIC 212788477
EPIC 212788540
EPIC 212789652 (or very short period Cepheid)
EPIC 212789806
EPIC 212791383
EPIC 212795516
EPIC 212801866
EPIC 212802166
EPIC 212808200
EPIC 212814000
EPIC 212814577
EPIC 212817187
EPIC 212817671
EPIC 212821726
EPIC 212821891
EPIC 212831202
EPIC 212832929
EPIC 229227274
EPIC 229228086
...
EPIC 229228093EPIC 229228095
...
EPIC 229228099EPIC 229228101
...
EPIC 229229120EPIC 229228120
Other:
EPIC 212307602 Strange round feature beginning at BKJD 2387.6, depth 0.009, duration about 4.9 days
EPIC 212633291 Asteroid crossing at BKJD 2415.91
EPIC 212651627 Asteroid crossing at BKJD 2408.47
EPIC 212655748 Probably DSCT (Delta Scuti pulsating variable star)
EPIC 212684857 2 transits by an extented source, period about 47 days, at BKJD 2397.57 and 2444.57, depth 0.0035, duration about 2.5 days
EPIC 212694408 Asteroid crossing at BKJD 2399.13
EPIC 212697593 Asteroid crossing at BKJD 2392.76
EPIC 212700993 Nova-like outbreaks
EPIC 212703221 Asteroid crossing at BKJD 2402.17
EPIC 212714663 Asteroid crossing at BKJD 2393.7
EPIC 212796092 Probably DSCT, very fast pulsations
EPIC 212812845 Asteroid crossing at BKJD 2394.74
EPIC 212817327 Asteroid crossing at BKJD 2420.26
EPIC 212817761 Asteroid crossing at BKJD 2420.20
EPIC 212829062 Asteroid crossing at BKJD 2417.99
EPIC 229227199 Outbreak at BKJD 2437.5
EPIC 229227273 Maybe cataclysmic variable or dwarf nova, large outbreak at BKJD 2423.69
EPIC 229227345 Asteroid crossing at BKJD 2408.99
EPIC 229227482 Asteroid crossing at BKJD 2426.62
EPIC 229227636 Asteroid crossing at BKJD 2403.46
EPIC 229227653 Asteroid crossing at BKJD 2400.97
EPIC 229227679 Asteroid crossing at BKJD 2397.46
EPIC 229227710 Asteroid crossing at BKJD 2411.03
EPIC 229227780 Asteroid crossing at BKJD 2394.40
Posted
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by
JKD
PLANET CANDIDATES
EPIC 212292256, S1 at 2409.8 BKJD, P =? , Duration ~3.4 hrs, Depth ~1000 ppm
EPIC 212294392, S1 at 2444.2 BKJD, P= ?, Duration ~10.3 hrs, Depth ~2200 ppm
EPIC 212311834, S1 at 2400.41 BKJD, P = 17.75 d, Duration ~3.4 hrs, Depth ~104000 ppm
EPIC 212311871, S1 at 2423.41 BKJD, P = ?, Duration ~7.35 hrs, Depth ~1600 ppm
EPIC 212315444, S1 at 2408.06 BKJD, P = ?, Duration ~21.57 hrs, Depth ~2400 ppm (maybe contaminated, a glitch or a special signal)
EPIC 212315941, S1 at 2393.55 BKJD, P = ?, Duration ~1.96 hrs, Depth ~13300 ppm
EPIC 212317795, S1 at 2401.43 BKJD, P = ?, Duration ~5.39 hrs, Depth ~500 ppm
EPIC 212321305, S1 at 2395.9 BKJD, P = ?, Duration ~9.3 hrs, Depth ~7000 ppm
EPIC 212343520 maybe 2 planets, S1 at 2451.02 BKJD, Duration ~6.37 hrs, Depth ~5%; S2 at 2463.08 BKJD, Duration ~9.80 hrs, Depth ~2%
EPIC 212349118, P = 2,54 d, Duration ~8.3 hrs, Depth ~1000 ppm
EPIC 212351026 maybe 2 planets, close orbit S1 at 2385.17 BKJD, P = 2.54 d, Duration ~6.86 hrs, Depth ~4000 ppm; outer orbit S2 at 2397.49 BKJD, P = ?, Duration ~5.88 hrs, Depth ~3800 ppm (see also 212351405)
EPIC 212351405, S1 at 2385.16 BKJD, P = 2.548 s, Duration ~6.37 hrs, Depth ~4000 ppm
EPIC 212421319, S1 at 2388.59 BKJD, P = 5.5 d (TTV)
EPIC 212451671; S at 2418.37 BKJD, Duration ~3.4 hrs, Depth ~9400 ppm (PC, but maybe glitch or contamination also)
EPIC 212553379; S at 2403.55 BKJD, Duration ~5.39 hrs, Depth 1900 ppm, p ~41.16 d
EPIC 212553752; S at 2437.92 BKJD, Duration ~2.45 hrs, Depth ~4000ppm, p ~? (speculative one)
EPIC 212444926, S1 at 2416.43 BKJD, Duration ~50.5 hrs, Depth ~9000 ppm (a maybe)
.
EB CANDIDATES
EPIC 2123307101, Signal at 2424.09 BKJD, P = ?, Duration ~1.47 hrs, Depth ~509000 ppm (~50%)
EPIC 212310740, S1 at 2385.57 BKJD, P ~3.6 d, Duration ~3.43 hrs, Depth ~73000 ppm, S2 at 2387.38 BKJD, P ~3.6 d, Duration ~1.96 hrs, Depth ~1300 ppm
EPIC 212325089, S1 at 2441.22 BKJD, P = ?, Duration ~53.9 hrs, Depth ~110000ppm, S2 not detected
EPIC 212327309, starting at 2384.48 BKJD, P = 6.7 d
EPIC 212331641, starting at 2394.36, BKJD, P = 28.57 d
EPIC 212332380, S1 at 2413.15 BKJD, Duration ~33.34 hrs, Depth ~126000 ppm, S2 at 2449.83 BKJD, Duration ~14.2 hrs, Depth ~230000 ppm (maybe a companion at 2460.62 BKJD)
EPIC 212334671, S1 at 2392.72 BKJD, S2 at 2397.29 BKJD, P = 15.46 d
EPIC 212339438, S1 at 2385.19 BKJD, S2 = 2386.58 BKJD, P = 2.70 d
EPIC 212349750, S1 at 2385.33 BKJD, S2 at 2386.77 BKJD, P = 2.867 d
EPIC 212351048, S1 at 2385.15 BKJD, S2 at 2386.43 BKJD, P = 2.548 d
EPIC 212351868, S1 at 2385.05 BKJD, S2 at 2386.31 BKJD, P = 2.5 d
EPIC 212358105, S1 at 2384.81 BKJD, S2 at 2385.57 BKJD, P = 1.525 d
EPIC 212362957, S1 at 2384.91 BKJD, S2 at 2389.44 BKJD, P = 12.5 d
EPIC 212370052, S1 at 2386.20 BKJD, S2 at 2390.10 BKJD, P = 7.78 d
EPIC 212383778, S1 at 2385.23 BKJD,, S2 at 2386.07 BKJD, P = 1.65 d
EPIC 212384646, S1 at 2384.64 BKJD, S2 at 2385.50 BKJD, P = 1.73d
EPIC 212397056; S1 at 2390.37 BKJD, S2 at 2407.71. BKJD, P ~38.7d, ( maybe a 3rd object around)
EPIC 212409377, P = 2.23 d
EPIC 212432524, P = 4.94 d
EPIC 212558371, S at 2420.55 BKJD, Duration ~95.6 hrs, Depth ~450 ppm (very enthusiiastic)
Posted
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by
zoo3hans
in response to ajamyajax's comment.
So far I find it very difficult to detect anything with this (bad quality) data (except obvious cases like WASP-55). Nearly all interesting dips are surrounded by equally large jitter dips - impossible to say which are real or not. And most remaining dips appear to be glitches. Difficult terrain, I'd say. I hope we get corrected data soon...
Posted
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by
ajamyajax
in response to zoo3hans's comment.
Interesting, thanks. Maybe I was too optimistic for this campaign! Currently I have another dozen or two (maybe) of more corrected data C5 candidates to finish up.. I just gave them a quick look before.. After that I'll start in the middle of C6 MAST and help look. But as you mentioned, maybe this data is just too poor for good PC hunting.
Posted
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by
ajamyajax
Re 212803289 from Hans Martin's list: well the good news is even with this MAST data, perhaps a Jupiter class planet candidate was found by HM already! And maybe with another giant or subgiant star as well. 2.53x R_sol is the fit estimate used here, but note the fairly wide mass range in the colors. If the stellar mass is only 1.0 R_sol, this estimate would be ~2.21 R_sol and the PC would be a smaller radius also.
s1=2400.841 p1=18.249 d1=0.44 (10.56 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212803289 , 2MASS J13550570-0526330 , 10.024 , 9.755 , 9.720 , 0.269 , 0.035 , ('G2V', 1.0) , ('A4V', 1.91)
Semi-Major Axis a (A.U.) = 0.156
Stellar diameter ratio = 2.53
Stellar mass ratio = 1.51
Period ~= 18.26 days
Duration ~= 10.56 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212803289 208.7737 -5.4425 0.21 11.014 6Listed as BD-04 3588 -- Star on Simbad, Proper motions mas/yr: -4.9 2.5
Posted
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by
ajamyajax
My C6 candidates, starting from the middle @ 212605827...
PC candidates:
212606946 s1=2388.11 p1=6.447 d1=0.16
212608049 s1=2385.75 p1=2.6845 d1=0.15; s2=2387.30 p2=3.625 d2=0.1
212610046 s1=2395.5 p1=26.21 d1=0.18
212613949 s1=2404.39 p1=39.86 d1=0.18
EB candidates:
212606118
212606890
212607355
212611243
212612358
212613128
212613425
212613461 s1=2397.6 p1=63.1 d1=0.18
212614745
212614766
Posted
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by
Shellface
Oh, am I late? My computer kinda died for a while.
The Campaign 6 field is relatively barren compared to the previous two, so there is not much to look out for from the outset. It lies about halfway between the Campaign 1 and 2 fields, on the other end of Virgo to Campaign 1.
Looking at the Campaign proposals, the known transit hosts in the field are WASP-55 (which has already been noted) and Qatar-2 (EPID 212756297). Qatar-2 is known to be active, and the raw lightcurve shows some vigorous rotational variability.
After burrowing through literature I finally found a good source for reddening information; it can be found here. Reddening values are given as an increase in B-V, as is standard, and this should not be too difficult to use. As I understand it, E(B-V) values will be overestimated for our purposes as K2 targets will be closer than the median stars studied; I am not sure how to deal with this yet. Anyway, this Campaign field is far from the galactic plane, so reddening should be mostly negligible here.
(zoo3hans - apologies for the delay, I caught a terrible cold pretty much as soon as I replied and have only just recovered. I will try to get the write-up done as soon as possible)
Posted
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by
Dolorous_Edd
Do you guys even sleep??
EPIC 212803289 aka BD-04 3588
Image from Subaru telescope
Looking at SDSS, I think the other objects in the image are most likely high z elliptical galaxies ( judging by color and shape )
SDSS J135505.70-052633.1 - 1237671991881695258
Posted
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by
ajamyajax
in response to Dolorous_Edd's comment.
Who can sleep with all those gravitational waves rippling through space-time? (joke) But seriously, always something new and interesting to look at here. Of course lots of caffeine and energy drinks helps with the research.
Posted
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by
ajamyajax
Re 212311834 from JKD's list: with an observed dip of nearly 11% for the transit, a good chance here for a beautiful EB.
s1=2400.41 p1=17.79 d1=0.12 (2.88 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212311834 , 2MASS J13195439-1710521 , 13.327 , 12.880 , 12.762 , 0.447 , 0.118 , ('K3V', 0.81) , ('K3V', 0.81)
Posted
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by
ajamyajax
Re 212315941 from JKD's list: well the transit depth and shape here also favor this being a small star eb system.. Although, if the star is as small as ~0.5x R_sol, a PC radius could be near Saturn size. So there is still hope for a grazing transit PC.
s1=2393.556 p1=12.935 d1=0.11 (2.64 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212315941 , 2MASS J13322094-1703403 , 12.844 , 12.295 , 12.175 , 0.549 , 0.12 , ('K4V', 0.78) , ('K3V', 0.81)
au min-max 0.085 0.085
stellar diameter in solar units min-max 0.395 0.65
stellar mass in solar units min-max 0.49 0.49
period in days min-max 12.931 12.931
duration in hours min-max 2.139 3.519From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212315941 203.0873 -17.0612 0.13 14.406 6
Posted
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by
ajamyajax
Re 212768333 from Hans Martin's list: looks like another nice MPC find by HM with two more periodic candidates. Only two are really evident in the MAST data however. Also these durations see a bit shorter than the colors suggest, perhaps due to blending. So all radii here could be slightly greater but a 0.74x R_sol estimate used here. Also note that most of the malformed transit data was removed from both fits.
s1=2388.613 p1=17.042 d1=0.15 (3.6 hours)
s2=2388.02 p2=7.453 d2=0.1146 (2.75 hours)
s3=2398.2 p3=23.40 p3=0.17 (4.0x hours) ???
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212768333 , 2MASS J13152252-0627535 , 9.741 , 9.313 , 9.228 , 0.428 , 0.085 , ('K1V', 0.86) , ('G8V', 0.94)
Semi-Major Axis a (A.U.) = 0.121
Stellar diameter ratio = 0.72
Stellar mass ratio = 0.819
Period ~= 17.03 days
Duration ~= 3.6 hoursSemi-Major Axis a (A.U.) = 0.07
Stellar diameter ratio = 0.72
Stellar mass ratio = 0.819
Period ~= 7.43 days
Duration ~= 2.73 hoursSemi-Major Axis a (A.U.) = 0.15
Stellar diameter ratio = 0.72
Stellar mass ratio = 0.819
Period ~= 23.35 days
Duration ~= 4.0 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212768333 198.8438 -6.4649 0.06 11.022 6
212769130 198.8156 -6.4425 129.14 12.962 6
212769314 198.8191 -6.4372 133.21 11.609 6Listed as TYC 4964-1269-1 -- Star on Simbad, Proper motions mas/yr: -38.5 -20.6
Posted
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by
ajamyajax
Re 212606946 from my list and having some fun with this one: maybe a high-impact gas giant orbiting an interesting star. So either a transit could be blended or is in an eccentric orbit with two three-off-in-a-row (meaning not visible) transit patterns. Or is this just the MAST data? The star is very bright at 8.894 KepMag so the radius estimate could be conservative at 1.32x R_sol (A9V as listed on Simbad could be ~1.66 R_sol).
s1=2388.11 p1=6.447 d1=0.16 (3.84 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212606946 , 2MASS J13145337-1025569 A , 7.761 , 7.698 , 7.629 , 0.063 , 0.069 , ('A7V', 1.76) , ('G2V', 1.0)
au min-max 0.065 0.08
stellar diameter in solar units min-max 1.06 1.37
stellar mass in solar units min-max 0.88 1.645
period in days min-max 6.444 6.457
duration in hours min-max 3.745 3.939Semi-Major Axis a (A.U.) = 0.079
Stellar diameter ratio = 1.32
Stellar mass ratio = 1.57
Period ~= 6.44 days
Duration ~= 3.84 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212606946 198.7224 -10.4325 0.15 8.894 6Listed as HD 115078 -- Star on Simbad, Proper motions mas/yr : 15.78 -7.82, Spectral type: A9V
These 'three-off not-visible' transit data ranges were removed from fit:
[ 2407.371 to 2407.531 BJD]
[ 2413.818 to 2413.978 BJD]
[ 2420.265 to 2420.425 BJD]
[ 2439.606 to 2439.766 BJD]
[ 2446.053 to 2446.213 BJD]
[ 2452.5 to 2452.66 BJD]
Posted
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by
Dolorous_Edd
PC maybe
EPIC 212270970 - seems to have dips with p = 0.717d
EPIC 212300977 - well, maybe ~ 2% drop WASP-55 I reckon
EPIC 212304395 - period ~1.4d
EPIC 212327733 ??? - period ~0.4 d
Contamination
EPIC 212349118 - period 2.554030d
EPIC 212351026 - period ~2.5544 - huh contamination? see EPIC 212349118
EPIC 212351405 - contamination for sure period ~2.55
EPIC 212351542 - contamination p~2.55
EPIC 212363377 - per ~4.5 looks like contamin
EBs:
EPIC 212277786 - EB
EPIC 212280209 - EB
EPIC 212280240 - EB
EPIC 212280934 - EB
EPIC 212280974 - EB
EPIC 212290847 - EB
EPIC 212292519 - EB
EPIC 212295183 - EB
EPIC 212300825
EPIC 212302722
EPIC 212306901
EPIC 212307104
EPIC 212308231
EPIC 212310740
EPIC 212311834
EPIC 212316775
EPIC 212317819
EPIC 212319161
EPIC 212321859
EPIC 212321981
EPIC 212323325
EPIC 212325089 - Massive dip 2441
EPIC 212325580
EPIC 212326735 - Massive dip 2425
EPIC 212327309
EPIC 212328878
EPIC 212330487
EPIC 212331641
EPIC 212332380
EPIC 212334671
EPIC 212339438
EPIC 212341886
EPIC 212342252
EPIC 212343017
EPIC 212343384
EPIC 212345490
EPIC 212347262
EPIC 212347818 - far shot maybe HB
EPIC 212349735
EPIC 212349750
EPIC 212349927
EPIC 212351048 - 70% drops mind you
EPIC 212351868
EPIC 212352472
EPIC 212355006
EPIC 212355449
EPIC 212362957
EPIC 212364002 - shallow transits but EB imo
EPIC 212366244
RR Lyr type
EPIC 212283691 - RR Lyr
EPIC 212291374 - RR Lyr
EPIC 212291532 - RR Lyr
EPIC 212295535 - Cepheid?
EPIC 212304480
EPIC 212309712
EPIC 212314501
EPIC 212329006
EPIC 212330039
EPIC 212334136
EPIC 212335761
EPIC 212340130
EPIC 212343739
EPIC 212346963
EPIC 212349279
EPIC 212350320
EPIC 212358105
EPIC 212359295
Misc
EPIC 212322451 - powerful flare
EPIC 212331504 - hard to say for sure
EPIC 212351528 - not sure
EPIC 212354976 - WTF? bad data?
EPIC 212357657 - must be artifact since scale jumped from 1 to 20
Posted
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by
ajamyajax
Re 212797028 from Hans Martin's list: seems to have EB transit depth and shape. Also get stellar estimates in a fairly wide range which often seems to indicate a binary.
s1=2397.463 p1=29.982 d1=0.27 (6.5 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212797028 , 2MASS J13511632-0538045 , 11.909 , 11.679 , 11.538 , 0.23 , 0.141 , ('F8V', 1.18) , ('K5V', 0.75)
au min-max 0.175 0.225
stellar diameter in solar units min-max 1.05 1.385
stellar mass in solar units min-max 0.795 1.69
period in days min-max 29.976 29.991
duration in hours min-max 6.401 6.579From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212797028 207.8180 -5.6346 0.10 13.097 6
212798341 207.8201 -5.5937 147.43 17.935 6
Posted
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by
ajamyajax
Re 212349118,212351026,212351405 from JKD's list: unfortunately these appear to be contaminated by BD Vir ~3.03 arc minutes away. Note this EB is also EPIC 212351048:
s1=2385.17 p1=2.5485 d1=0.35 (8.4 hours)
s2=2386.444 p2=2.5485 d2=0.35 (8.4 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212349118 , 2MASS J13263818-1609148 , 11.605 , 11.314 , 11.253 , 0.291 , 0.061 , ('G1V', 1.07) , ('F7V', 1.21)
212351048 , 2MASS J13264057-1606163 , 9.107 , 8.865 , 8.776 , 0.242 , 0.089 , ('F9V', 1.14) , ('G9V', 0.91)
au min-max 0.035 0.04
stellar diameter in solar units min-max 1.165 1.425
stellar mass in solar units min-max 0.88 1.325
period in days min-max 2.538 2.553
duration in hours min-max 3.02 3.22From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212349118 201.6591 -16.1541 0.15 12.621 6
212351048 201.6691 -16.1046 181.62 10.039 6From VSX:
Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
3.03 Variable BD Vir 000-BFP-496 13 26 40.58 -16 06 16.5 Vir EA/SD 2.548563 9.9 - 11.2 V (2MASS J13264058-1606165)
From Simbad: V* BD Vir -- Eclipsing binary of Algol type (detached), Proper motions mas/yr : 10.68 -6.50, Spectral type: A8V
And all these K2 C6 targets seem to be contaminated by EB 212351048 to some degree:
From NEA, K2 Targets within EB 212351048's search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212351405 201.6629 -16.0950 40.59 13.995 6
212351026 201.6869 -16.1051 61.65 14.541 6
212351542 201.6811 -16.0913 63.36 13.359 6
212349118 201.6591 -16.1541 181.58 12.621 6
212351335 201.7250 -16.0968 195.42 17.659 6
Posted
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by
ajamyajax
Re 212737443 from Hans Martin's list: maybe two or more planet candidates here (I added one to HM's find). The stellar parameters I get are fairly consistent which is good. 0.84x R_sol estimate. And only the 2416.x BJD range transit was removed from the second fit. Also both appear to be high-impact transits.
s1=2388.36 p1=13.598 d1=0.16 (3.84 hours)
s2=2394.82 p2=10.92 d2=0.145 (3.48 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212737443 , 2MASS J13365320-0719053 , 12.824 , 12.239 , 12.160 , 0.585 , 0.079 , ('K5V', 0.75) , ('G6V', 0.97)
au min-max 0.105 0.11
stellar diameter in solar units min-max 0.815 0.895
stellar mass in solar units min-max 0.835 0.96
period in days min-max 13.6 13.6
duration in hours min-max 3.74 3.938au min-max 0.09 0.1
stellar diameter in solar units min-max 0.785 0.92
stellar mass in solar units min-max 0.815 1.12
period in days min-max 10.914 10.924
duration in hours min-max 3.391 3.578From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212737443 204.2217 -7.3181 0.16 14.461 6
212737293 204.2246 -7.3220 17.32 13.700 6
212737492 204.2010 -7.3169 74.04 16.325 6
212738247 204.2169 -7.2972 77.32 12.788 6
212736990 204.2015 -7.3306 84.92 13.596 6
212737999 204.2488 -7.3038 109.69 16.686 6
212736228 204.2181 -7.3506 117.55 14.385 6
Posted
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by
ajamyajax
Re 212684857 from Hans Martin's list: and another fascinating find it is too! Note the transit duration could be up to 81.6 hours for a sub-Sun size star per the colors anyway. Sure would be great to see an extended object per HM's comment (rings, evaporating, debris disk, etc.). The fold shown here reminds me of heartbeat light curves I've seen though meaning a grazing binary as another possibility. But hopefully this most interesting and unusual system will get a closer look.
s1=2397.57 p1=47.0 d1=3.4 (81.6 hours or less); but note ~0.5-0.8 bjd for narrow transit center..
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212684857 , 2MASS J13531477-0837508 , 11.095 , 10.571 , 10.453 , 0.524 , 0.118 , ('K3V', 0.81) , ('K3V', 0.81)
From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212684857 208.3116 -8.6308 0.14 12.666 6
212684558 208.2804 -8.6373 113.41 12.880 6
Posted
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by
ajamyajax
in response to Dolorous_Edd's comment.
Re 212304395 from Ivan's list: well very periodic but this one also appears to have a secondary transit. And didn't see a nearby eb listed on VSX or sign of one in the nearby EPICs.
s1=2385.07 p1=1.6055 d1=0.10 (2.4 hours)
s2=2385.873 p2=1.6055 d2=0.10 (2.4 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212304395 , 2MASS J13371326-1723505 , 12.983 , 12.547 , 12.448 , 0.436 , 0.099 , ('K3V', 0.81) , ('K3V', 0.81)
au min-max 0.025 0.03
stellar diameter in solar units min-max 1.005 1.315
stellar mass in solar units min-max 0.8 1.41
period in days min-max 1.598 1.614
duration in hours min-max 2.301 2.498From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212304395 204.3053 -17.3974 0.19 14.293 6
212304959 204.3009 -17.3809 61.12 18.307 6
212306128 204.3109 -17.3463 184.83 12.510 6
212306975 204.2975 -17.3210 276.18 9.542 6
212305168 204.3845 -17.3749 283.96 13.839 6
Posted
-
by
zoo3hans
in response to ajamyajax's comment.
Nice find Mark!
Posted
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by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212270970 seems to be a possible PC candidate, as DE pointed out. Period 0.7166 days, depth 0.002, duration about 3 hours
Posted
-
by
ajamyajax
Re 212270970 from Ivan's list and HM's mention: alas, looks like another secondary transit.. But at least we are getting a number of good C6 MAST candidates.
s1=2385.142 p1=0.7166 d1=0.08 (1.92 hours)
s2=2385.50 p2=0.7166 d2=0.08 (1.92 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212270970 , 2MASS J13510995-1827420 , 12.320 , 11.982 , 11.899 , 0.338 , 0.083 , ('G6V', 0.97) , ('G8V', 0.94)
From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212270970 207.7915 -18.4617 0.10 13.352 6
Posted
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by
Dolorous_Edd
Thanks guys!
Lets continue, shall we
PC
EPIC 212421319 - period ~5.520
EPIC 212421329 - single dip 2423
--
Glitch
single dip 2430 - 2430.5 - very common!
EB
EPIC 212367422
EPIC 212368236
EPIC 212369520
EPIC 212370052
EPIC 212370247
EPIC 212373596
EPIC 212375141
EPIC 212383778
EPIC 212387485
EPIC 212389345
EPIC 212386520 - maybe HB
EPIC 212397056
EPIC 212401260
EPIC 212403265
EPIC 212405658
EPIC 212406350 - ?
EPIC 212406474
EPIC 212407349
EPIC 212409377
EPIC 212409856
EPIC 212410755 - maybe HB
EPIC 212413430
EPIC 212417656
EPIC 212419731
EPIC 212420474
EPIC 212420510
EPIC 212420641
EPIC 212421673 - nice EB , maybe third dip at 2430 glitch most likely
EPIC 212422867 - maybe HB
EPIC 212426112
EPIC 212428509
EPIC 212428764
EPIC 212430801
EPIC 212432816 - Big dip at 2238
EPIC 212433098
RR Lyr
EPIC 212379137
EPIC 212384541
EPIC 212384646
EPIC 212385200
EPIC 212390066
EPIC 212394562
EPIC 212400021
EPIC 212404864
EPIC 212405442
EPIC 212407078
EPIC 212409299
EPIC 212412494
EPIC 212417417
EPIC 212417452
EPIC 212425817
EPIC 212426424 - must be contamination by RR Lyrae
--
Flare
EPIC 212368229
EPIC 212368263
EPIC 212373486
EPIC 212396917
EPIC 212401074
EPIC 212402730
EPIC 212404378
EPIC 212408691
EPIC 212424143
EPIC 212426904
EPIC 212430940
EPIC 212434300
Other
EPIC 212432474 - Wierd LC , Wierd object in DSS
Posted
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by
zoo3hans
in response to ajamyajax's comment.
EPIC 212315941 Unfortunately I have to agree with the EB hypothesis, I see secondary eclipses at BKJD 2397.18, 2410.10, 2423.07, 2436.01, 2448.94, also with a period around 12.93 days. The orbit must be rather eccentrical.
Posted
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by
Dolorous_Edd
EPIC 212426424 is listed under GO6082 - Investigating different populations of RR Lyrae stars with K2
But it looks like contamination
BTW do you guys think that black dots on white background would be better here?
And the real RR Lyr is nearby, perhaps even the star below, I think
EPIC 212426424 is number 1 here
Number 2 is EPIC 212426671
Posted
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by
Dolorous_Edd
LMAO!
Check out EPIC 212432474
These are not different objects, this a star with high proper motion
It just moved while was imaged in different filters
-884 mas/yr Proper motion in RA (relative to YS4.0)
-366 mas/yr Proper motion in DE (relative to YS4.0)
Same image of sky just imaged by DSS ( not DSS2!) earlier
Posted
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by
zoo3hans
As JKD mentions in his list: EPIC 212325089 is an EB with just one eclipse, but what an eclipse! Depth about 0.109, duration about 2.22 days.
Posted
-
by
Dolorous_Edd
Yeah, noticed EPIC 212325089 too
Could be a new EB , since I don't see EB proposal for it
It is listed under GO6032_LC Galactic Archaeology on a grand scale
Posted
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by
Dolorous_Edd
Updated 17.02.2016
PC
EPIC 212451091 - period ~12.655
EPIC 212477236 - Single dip at 2449.4
EPIC 212485410 - Single dip at 2393
EPIC 212488008 - period ~5.7d
EPIC 212499835 - PC or EB?? p = 6,877
EPIC 212502628 - maybe p 61.71d , start 2399
EPIC 212521166 - period ~13.86
EPIC 212543933 - period ~7.8d
EPIC 212554013 - period ~3.587, possible PC imo, ~1.5% drop maybe Jovian type planet, imaged by Subaru, Possible Hot Jupiter?
EPIC 212570977 - EB most likely ~3% sooo
--
EB:
EPIC 212436140 - Most likely HB
EPIC 212436216 - maybe just pulsating
EPIC 212437711
EPIC 212439026
EPIC 212439260
EPIC 212439709
EPIC 212440192
EPIC 212442408
EPIC 212448152
EPIC 212449840
EPIC 212450979
EPIC 212452603
EPIC 212453473
EPIC 212453656
EPIC 212454161
EPIC 212454563
EPIC 212456583
EPIC 212460619
EPIC 212462385 - Most likely HB
EPIC 212463213 - or RRL
EPIC 212465919
EPIC 212468149
EPIC 212469831 - looks like EB
EPIC 212470542
EPIC 212473154 - EB me thinks
EPIC 212475454
EPIC 212476517 - EB maybe
EPIC 212476895
EPIC 212478154
EPIC 212492961
EPIC 212497267
EPIC 212499716 - shallow transits , but IMO secondaries are visible
EPIC 212502064
EPIC 212504059
EPIC 212504385
EPIC 212504617 - ~4% drop must be EB
EPIC 212506921
EPIC 212508560
EPIC 212512116
EPIC 212512986
EPIC 212513056
EPIC 212518838
EPIC 212521177
EPIC 212521851
EPIC 212524315
EPIC 212527975
EPIC 212535959
EPIC 212540174
EPIC 212540985
EPIC 212541386
EPIC 212542474
EPIC 212544196
EPIC 212545451
EPIC 212545602
EPIC 212546373
EPIC 212547862
EPIC 212549089 - possible EB , single drop 2412
EPIC 212549877
EPIC 212551424
EPIC 212553193
EPIC 212554009 - EB, single drop at 2462
EPIC 212555023
EPIC 212555590
EPIC 212556015
EPIC 212556359 - maybe EB
EPIC 212558644 - not sure about this one; period ~0.510d perhaps EB
EPIC 212559866
EPIC 212560752
EPIC 212564937
EPIC 212567272 - maybe just starspots
EPIC 212568066 - some of the eclipses have ragged bottom , weird!
--
RR Lyr
EPIC 212450283
EPIC 212441076
EPIC 212447818
EPIC 212451472
EPIC 212453596
EPIC 212457000
EPIC 212459957
EPIC 212462263
EPIC 212463159
EPIC 212466080
EPIC 212469563
EPIC 212472092
EPIC 212476743
EPIC 212481328
EPIC 212483346
EPIC 212491978
EPIC 212507302
EPIC 212511413
EPIC 212521298
EPIC 212524664
EPIC 212534342
EPIC 212535351
EPIC 212453656
EPIC 212540092
EPIC 212544488
EPIC 212545143
EPIC 212562145
EPIC 212562649
Other
EPIC 212547858 - maybe HB
EPIC 212529990 - strange raise at 2443 ( target listed as galaxy )
EPIC 212449770 - maybe HB or just variable
EPIC 212436632 - strange raise at 2415
EPIC 212436869 - Strange wide fall at 2460 maybe EB signal
EPIC 212437496 - EB or starspots
EPIC 212440780 - there is nothing in the skyview
EPIC 212442325 - maybe dip 2423
EPIC 212448715 - single dip 2401
EPIC 212455160 - GD perhaps
EPIC 212459771 - maybe dip 2424
EPIC 212462672 - maybe HB maybe not
EPIC 212488319 - long 2410
EPIC 212505013 drop at 2425
EPIC 212505176 - maybe HB
EPIC 212505415 - dip at 2460
EPIC 212514522 - maybe HB
EPIC 212515603 - Single dip 2429
EPIC 212516916 - maybe dip d2451
EPIC 212516946 - maybe HB
EPIC 212518838 - pulsating
EPIC 212521662 - WISE J134310.44-121628.8 -- High proper-motion Star
EPIC 212521851 - maybe 2 dips ; start 2387.7; p ~45.9d
EPIC 212523972 - jerky LC , but maybe HB
EPIC 212535624 - strange long drop at 2417
EPIC 212538283 - dunno maybe periodic dips ~7d
EPIC 212546197 - single dip 2460
EPIC 212548141 - periodic pulsation period ~0.256
EPIC 212549093 - single dip 2427
EPIC 212552929 - inverse trans 2386.5
EPIC 212555615 - single drop at 2428.6; maybe PC
EPIC 212555996 - LC looks like CV, listed as QSO
EPIC 212558932 - Myabe HB
EPIC 212560613 - maybe HB
EPIC 212565031 - wierd contamination
EPIC 212565658 - drop 2411
EPIC 212566984 - looks like inverse transit 2394.8
EPIC 212568562 - maybe HB?
EPIC 212568691 - spike at 2401, asteroid?
Posted
-
by
zoo3hans
EPIC 212331504 seems to be an eccentric EB, a double feature at BKJD 2394.355 and 2402.805 (8.45 days apart) repeats every 28.555 days.
Posted
-
by
ajamyajax
Re 212689874 from Hans Martin's list: looks like an interesting sub-Saturn planet candidate and a star a bit larger than expected. 1.4X R_sol estimate.
s1=2392.045 p1=15.853 d1=0.24 (5.76 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212689874 , 2MASS J13191957-0830339 , 11.248 , 10.904 , 10.876 , 0.344 , 0.028 , ('G9V', 0.91) , ('A0V', 2.3)
au min-max 0.13 0.15
stellar diameter in solar units min-max 1.305 1.555
stellar mass in solar units min-max 1.165 1.79
period in days min-max 15.845 15.862
duration in hours min-max 5.664 5.854From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212689874 199.8315 -8.5095 0.08 12.330 6
212688614 199.8216 -8.5390 111.98 14.211 6
212691393 199.8311 -8.4727 132.42 15.878 6
212691080 199.8563 -8.4800 138.03 14.889 6
212687922 199.8080 -8.5561 187.55 14.871 6
Posted
-
by
ajamyajax
Re 212451091 from Ivan's list: looks like a fine Neptune planet candidate with a K-dwarf star. 0.78x R_sol estimate.
s1=2393.36 p1=12.675 d1=0.15 (3.6 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212451091 , 2MASS J14055312-1346458 , 13.132 , 12.743 , 12.612 , 0.389 , 0.131 , ('K0V', 0.89) , ('K6V', 0.7)
au min-max 0.085 0.11
stellar diameter in solar units min-max 0.66 0.9
stellar mass in solar units min-max 0.51 1.105
period in days min-max 12.675 12.683
duration in hours min-max 3.503 3.697Semi-Major Axis a (A.U.) = 0.098
Stellar diameter ratio = 0.78
Stellar mass ratio = 0.775
Period ~= 12.67 days
Duration ~= 3.6 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212451091 211.4713 -13.7794 0.11 14.244 6Edit: the irregular transit data from 2393.285 to 2393.435 BJD was removed from this fit.
Posted
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by
Dolorous_Edd
EPIC 212451091
CFHT R-band
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212499835 might be a PC candidate, P=6.88 days, starting at BKJD 2388.03, depth 0.015, duration about 8 hours. The transits show considerable substructure, maybe again a ringed planet?
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212451091 P=12.66 days, starting at BKJD 2393.38, depth 0.0032, duration about 6 hours. Looks good in my opinion.
Hm, one cannot see much on the image above, so I upload additional zoomed views...
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212488008 must be an EB. It shows alternate eclipse timings. P=11.33 days (5.665 days x 2), depth 0.0021, duration about 3 hours, V-shaped.
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212521166 looks fine, P=13.867 days, starting at BKJD 2386.88, depth 0.00135, duration 4 hours, U-shaped.
Zoom
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212543933 looks OK to me, P=7.802 days, starting at BKD 2390.5, depth 0.0009, duration about 3.5 hours.
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212554013 seems to be a Hot Jupiter indeed. P=3.587 days, starting at BKJD 2387.34, depth 0.0155, duration about 3 hours.
Posted
-
by
Dolorous_Edd
EPIC 212554013
Imaged by Subaru telescope ( plenty of images in different filters )
SkyView is a bit problematic, there is an object ~2" to the north, can't say what it is .. visibility and shape ( from round to elliptical ) varies depending on the filter, object may be be of extragalactic origin maybe not
For comparison in different filter
CFHT R-band
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212570977 Maybe a fine Warm Jupiter, P=8.85 days, depth 0.0262, duration about 5 hours, U-shaped.
Posted
-
by
zoo3hans
in response to JKD's comment.
EPIC 212421319 seems to be an EB, P=11.044 days (5.522 x 2), the eclipse timings do alternate between 5.6188 days and 5.4545 days. Depth 0.0235, duration about 8.5 days.
Posted
-
by
zoo3hans
EPIC 212431325 Maybe PC with P=44.41 days, starting at 2392.6, depth 0.002, duration about 3.5 hours.
Posted
-
by
zoo3hans
EPIC 212440430 Maybe single transit at BKJD 2435.14, depth 0.001, duration about 5 hours.
Posted
-
by
ajamyajax
Re 212421319 from JKD's list: agree with Hans Martin that this could be an EB, but also an interesting one because of the TTV as JKD mentioned. Will definitely want to look here again with more corrected data. Why there is TTV could be very interesting. Although I should mention that stellar dimensions seem difficult to constrain with widely ranging estimates. Perhaps though, that is due to a third star being present.
s1=2388.61 p1=5.525 d1=0.35 (8.4 hours)
ttv1 = [2388.61,2394.2,2399.645,2405.23,2410.718,2416.286,2421.74,2427.31,2432.795,2438.375,2443.893,2449.40,2454.93,2460.49]
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212421319 , 2MASS J13334711-1426002 , 15.102 , 14.562 , 14.611 , 0.54 , -0.049 , ('K3V', 0.81) , ('B1V', 11.0)
au min-max 0.09 0.11
stellar diameter in solar units min-max 3.795 4.76
stellar mass in solar units min-max 3.175 5.835
period in days min-max 5.515 5.535
duration in hours min-max 8.3 8.5From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212421319 203.4463 -14.4334 0.09 16.407 6
212420869 203.4781 -14.4437 116.81 13.892 6
212422952 203.4097 -14.3979 180.70 15.283 6
212422888 203.4018 -14.3991 198.39 16.852 6Also something a bit usual here from VSX:
Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
0.02 Variable CSS_J133347.1-142601 -- 13 33 47.16 -14 26 01.2 Vir RRC 0.3246662 16.89 (0.36) CV
And these possible bad transits were remove from this fit, although more probably should have been:
[2405.055 to 2405.405 BJD]
[2438.2 to 2438.55 BJD]
[2454.755 to 2455.105 BJD]
[2460.315 to 2460.665 BJD]Posted
-
by
ajamyajax
Re 212554013 from Ivan's list with HM mention: this one is right on the border for an HJ imo. A 0.94x R_sol estimate would produce an approx PC radius estimate of 12.79Re. And it still looks high impact at that estimate. But it is possible.
s1=2387.34 p1=3.588 d1=0.12 (2.88 hours +/-)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212554013 , 2MASS J13481881-1135204 , 13.373 , 12.926 , 12.793 , 0.447 , 0.133 , ('K3V', 0.81) , ('K6V', 0.7)
au min-max 0.04 0.05
stellar diameter in solar units min-max 0.87 1.165
stellar mass in solar units min-max 0.66 1.3
period in days min-max 3.582 3.597
duration in hours min-max 2.78 2.979Semi-Major Axis a (A.U.) = 0.042
Stellar diameter ratio = 0.94
Stellar mass ratio = 0.75
Period ~= 3.59 days
Duration ~= 2.88 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212554013 207.0784 -11.5890 0.11 14.733 6
And a number of possible bad transits were removed from this fit:
[2387.28 to 2387.4 BJD]
[2398.044 to 2398.164 BJD]
[2408.808 to 2408.928 BJD]
[2412.396 to 2412.516 BJD]
[2423.16 to 2423.28 BJD]
[2441.1 to 2441.22 BJD]
[2448.276 to 2448.396 BJD]
[2451.864 to 2451.984 BJD]
[2455.452 to 2455.572 BJD]
[2459.04 to 2459.16 BJD]Posted
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by
ajamyajax
Re 212570977 from Hans Martin's mention: U-shaped but fairly deep for a PC. If a 1.1X R_sol star a planet candidate would be ~19.54Re in radius, so have to hope for a smaller possible star here.
s1=2390.90 p1=8.85 d1=0.17 (4.08 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212570977 , 2MASS J13433632-1113249 , 12.735 , 12.362 , 12.319 , 0.373 , 0.043 , ('G9V', 0.91) , ('A8V', 1.67)
au min-max 0.075 0.095
stellar diameter in solar units min-max 0.95 1.26
stellar mass in solar units min-max 0.72 1.46
period in days min-max 8.841 8.856
duration in hours min-max 3.986 4.178From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212570977 205.9014 -11.2236 0.11 13.928 6
212570296 205.8964 -11.2384 56.22 14.666 6
212571821 205.9266 -11.2058 109.62 14.008 6
And possible bad transits removed from this fit:
[2417.365 to 2417.535 BJD]
[2443.915 to 2444.085 BJD]
[2452.765 to 2452.935 BJD]
[2461.615 to 2461.785 BJD]Posted
-
by
Dolorous_Edd
PC
EPIC 212580872 - period 14.783d
EPIC 212586717 - period 4.295d , ~1.5-2% drop so maybe PC or EB
EPIC 212587672 - maybe, period ~23.221d ; start at 2404
Contamination
EB or blend ; 212572452 and 212572439 are very close together
EPIC 212572452 - Period 2.581
EPIC 212572439 - Period 2.581
EB
EPIC 212571215
EPIC 212575343
EPIC 212575959
EPIC 212576383
EPIC 212577519
EPIC 212579164
EPIC 212580081
EPIC 212580230
EPIC 212585135
EPIC 212585579 - shallow depth, but visible secondary
EPIC 212588757
EPIC 212589131
EPIC 212595129
EPIC 212598907 - shallow transits , period ~0.3d
RR Lyr
EPIC 212571112
EPIC 212571247
EPIC 212575799
EPIC 212579424
EPIC 212597328
EPIC 212597399
EPIC 212597645
EPIC 212598683
Other
EPIC 212573574 - LC llooks like CV, but listed as QSO
EPIC 212574686 - single dip at 2408
EPIC 212576065 - firs impression HB, but the same pattern reapeats of pretty big number of stars, so maybe variable
EPIC 212577231 - maybe HB signal 2440
EPIC 212588930 - maybe just variable, maybe HB
EPIC 212595811 - LC llooks like CV, but listed as QSO
EPIC 212596901 - maybe hb, maybe not
EPIC 212600856 - wierd LC, maybe high-proper motion star ( there is nothing in DSS! )
Posted
-
by
Dolorous_Edd
I have reached EPIC 2126xxxxx numbers, I guess there is little point to go further ( besides just to look for leftovers )
So I am switching to " I am posting pretty pictures " mode
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
You've done a lot of good work! I'm looking forward to your pretty pictures 😃
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212580872 seems to be a fine Warm Neptun, P=14.783 days, starting at BKJD 2391.27, depth 0.0016, duration about 5 hours.
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212586717 could be a Hot Jupiter, the period P=4.29585 days would fit this perfectly, depth 0.0155, duration 3 hours. I also note rather V-shaped dips and alternating timings, so an EB seems also possible. Does anybody know if a (eccentrical) PC can show alternate timings (i.e. every second transit occurs a bit earlier or later compared to the others)?
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212587672 seems to be a good (and rather small!) PC candidate. P=23.2165 days, depth 0.0006, duration 4.5 hours.
Posted
-
by
zoo3hans
EPIC 212461484 could be an EB , P=2.27 days, starting at BKJD 2386.57, depth 0.001, duration about 12 hours.
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212485410 looks good for a PC , at BKJD 2393.02, depth 0.0009, duration 12 hours.
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212504617 has 2 transits at BKJD 2407.63 and 2446.89, period 39.26 days. The shape is very U-shaped, so maybe it's still a Warm Jupiter or Brown Dwarf. Small secondry transits are visible at 2416.41 and 2455.67.
Posted
-
by
JKD
in response to zoo3hans's comment.
EPIC 212499835
agree with zoo3hans’s comment; it’s a Planet CandidatePosted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
EPIC 212585579 P=3.0217 days, starting at BKJD 2385.546, depth 0.0014, duration about 3 hours. I see no obvious secondries, it might be a valid PC.
Posted
-
by
Dolorous_Edd
Recently I have realized that my Black & White SkyView images can exert pressure on the mood
You know .. uuu .. monday morning .. overcast days .. and thses black and white images
I am hereby introduce brand new SkyView: Color Bar of Joy™ with Interactive Assistant™ it is a whole new experience of viewing SkyView!
I also fixed gross PH mistakes in form of absence of "Like" and "Share" buttons
Say "No" to dull, black and white SkyViews!! New SkyView: Color Bar of Joy™ with Interactive Assistant™ will enhance Skyview viewing as well as Planet Hunting experience by 200%
Try new SkyView: Color Bar of Joy™ with Interactive Assistant™ NOW!
Posted
-
by
Dolorous_Edd
Ok, lets be serious , back to dull, black and white SkyView images ™
EPIC 212768333
CFHT G-band image
Posted
-
by
Dolorous_Edd
EPIC 212270970
From not DSS images, only if image from ESO-R
IMHO if better than DSS only by tiny fraction
Posted
-
by
Dolorous_Edd
EPIC 212325089
CFHT I-band
Companion is not seen, still it is EB just not visual binary
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
Where can I get this cool colour version?
😉
Posted
-
by
JKD
in response to zoo3hans's comment.
KID 212504617, for sure an EB with P = 39.27d, signal at 2455.66 BKJD is overlapped and not very precise. Nevertheless its valid.
Posted
-
by
ajamyajax
Re from Ivan's list and HM's and JKD's mention: well another U-shaped fit, but the longer duration transit seems to indicate either a giant or subgiant star... This would increase a possible PC radius estimate also to 18.57Re if a ~1.75x R_sol star. So we need another reason to find a smaller star here and a PC. And it could be an indication of a binary. Also VSX has an EB of P=1.66659 at this location, but that period doesn't match the transit spotted so this data could be incorrect. And there might be a secondary visible at times which we should check with more corrected data.
s1=2388.02 p1=6.881 d1=0.26 (6.24 hours or more)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212499835 , 2MASS J13494044-1244174 , 14.698 , 14.189 , 14.121 , 0.509 , 0.068 , ('K3V', 0.81) , ('G0V', 1.09)
Semi-Major Axis a (A.U.) = 0.069
Stellar diameter ratio = 1.75
Stellar mass ratio = 0.913
Period ~= 6.88 days
Duration ~= 6.24 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212499835 207.4186 -12.7381 0.15 16.271 6From VSX:
Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
0.01 Variable CSS_J134940.4-124417 -- 13 49 40.42 -12 44 17.5 Vir EW 1.66659 16.28 (0.27) CV (J13494042-1244175)
Posted
-
by
ajamyajax
Re 212521166 from Ivan's list and Hans Martin's mention: this one does looks like a good mini gas giant PC, perhaps with some limb darkening on the star. Although the transit data is a bit thin. 0.82x R_sol stellar estimate. And a good deal of proper motion per Simbad, apparently suggesting this star is closer than others we observe.
s1=2386.88 p1=13.862 d1=0.16 (3.84 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212521166 , 2MASS J13492388-1217042 , 10.184 , 9.641 , 9.607 , 0.543 , 0.034 , ('K3V', 0.81) , ('A4V', 1.91)
au min-max 0.095 0.115
stellar diameter in solar units min-max 0.72 0.915
stellar mass in solar units min-max 0.595 1.055
period in days min-max 13.855 13.868
duration in hours min-max 3.74 3.927From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212521166 207.3495 -12.2845 0.14 11.590 6
212522722 207.3533 -12.2523 116.64 14.940 6Listed as UCAC2 27489058 -- Star on Simbad, Proper motions mas/yr : 42.6 -101.2
Posted
-
by
ajamyajax
Re 212543933 from Ivan's list and Hans Martin's mention: looks like another possible two planet candidate system. And maybe a near 1:3 orbital resonance helps. 1.01x R_sol estimate.
s1=2390.5 p1=7.806 d1=0.15 (3.6 hours)
s2=2393.39 p2=21.807 d2=0.19 (4.56 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212543933 , 2MASS J13463655-1148178 , 12.869 , 12.535 , 12.497 , 0.334 , 0.038 , ('G6V', 0.97) , ('A7V', 1.76)
au min-max 0.07 0.085
stellar diameter in solar units min-max 0.885 1.13
stellar mass in solar units min-max 0.75 1.345
period in days min-max 7.8 7.811
duration in hours min-max 3.509 3.694au min-max 0.14 0.16
stellar diameter in solar units min-max 0.805 0.96
stellar mass in solar units min-max 0.77 1.15
period in days min-max 21.798 21.804
duration in hours min-max 4.461 4.656From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212543933 206.6523 -11.8049 0.17 14.010 6
Posted
-
by
Dolorous_Edd
in response to zoo3hans's comment.
Yeah .. thing is .. I have to take it down because I received complains that it violates people's right to feel unhappy, I also got charges from DEA, to quote them
After examination of SkyView: Color Bar of Joy™ images by our expert who claims that they remind him acid trip experience he had . We conclude that the SkyView: Color Bar of Joy™ images contain elements of drug abuse propaganda.
Not to mention charges from ATF, PETA, PaRGBp (people against RGB palette ) and "Association of people against ice-cream in paper cone "
Damn shame, I had so much plans like: leaderboard, parite hat for Interactive Assistant™ DLC , achievement system
EPIC 212543933
Subaru telescope image ( there are additional available images in different filters )
IMO object at ~4.6" to the SE doesn't look like a star
CFHT I-band image
BTW here is DSS 2 Red image for comparison roughly at the same scale
Posted
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by
Dolorous_Edd
EPIC 212521166
Worries me a bit, in IR DSS images it looks extended and maybe in DSS Red
I managed to dig up CFHT image of it, nothing suspicious from the looks of it
Posted
-
by
Dolorous_Edd
EPIC 212570977
CFHT R-band
Posted
-
by
Dolorous_Edd
EPIC 212587672
CFHT R-band
There are some faint stars visible
Posted
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by
Dolorous_Edd
EPIC 212580872
CFHT R-band
Clearly seen companion less than 1" away to the NW
Update
if it helps the companion is separate a 2MASS source
It is 2MASS 13405672-1100293
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
Ok, so maybe this is a Warm Jupiter instead of a Warm Neptun, but the shape of the dip suggest very strongly a Planetary Transit nevertheless (maybe around the other star though). Can you check APO's?
Posted
-
by
Dolorous_Edd
in response to zoo3hans's comment.
but the shape of the dip suggest very strongly a Planetary Transit nevertheless
Well, shape doesn't tell us a whole lot
I will quote Shellface from here
A U-shaped transit means that the transiter crosses close to the centre of the transited's disk (it has a low impact parameter). It doesn't >tell you anything in particular about the size of the transiter, whereas the transit depth does.
......AFAIK there is now a different mechanism of contamination check it involves TPF analysis, remapping of pixel mask, LC rebuilding and other fun stuff
About the LC of
I don't like dips at 2395.45 and 2433.5
Posted
-
by
zoo3hans
in response to Dolorous_Edd's comment.
Whatever it is worth, here you go with the centr1 and centr2 APO's:
LC:
centr1:
centr2:
Posted
-
by
Dolorous_Edd
EPIC 212580872
Also if it helps the companion is separate 2MASS source
It is 2MASS 13405672-1100293
Posted
-
by
ajamyajax
Re 212697709 from Hans Martin's list: maybe an irradiated sub-Saturn to HJ in radii if high-impact, is my guess. It could be a binary as well. 0.82x R_sol estimate.
s1=2385.29 p1=3.9513 d1=0.102 (2.45 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212697709 , 2MASS J13263727-0819033 , 11.110 , 10.799 , 10.764 , 0.311 , 0.035 , ('G6V', 0.97) , ('A4V', 1.91)
au min-max 0.04 0.05
stellar diameter in solar units min-max 0.655 0.885
stellar mass in solar units min-max 0.545 1.07
period in days min-max 3.948 3.961
duration in hours min-max 2.302 2.498From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212697709 201.6552 -8.3176 0.15 12.193 6Listed as TYC 5544-596-1 -- Star on Simbad, Proper motions mas/yr : -35.2 -3.9
Posted
-
by
ajamyajax
Re 212580872 from Ivan's list and HM's mention: looks like it could be a Neptune planet candidate anyway. 0.90X R_sol estimate. That nearby 4.8" 2MASS 13405672-1100293 star has some upper limit on magnitude photometric flags so maybe not much of a dilution factor.
s1=2391.27 p1=14.783 d1=0.18 (4.32 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212580872 , 2MASS J13405689-1100336 , 11.934 , 11.579 , 11.479 , 0.355 , 0.1 , ('G8V', 0.94) , ('K3V', 0.81)
au min-max 0.1 0.13
stellar diameter in solar units min-max 0.805 1.09
stellar mass in solar units min-max 0.61 1.34
period in days min-max 14.782 14.789
duration in hours min-max 4.231 4.414From NEA, 2MASS Objects within search area:
2MASS Designation RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] J [mag] V or R [mag] Photometric flags
13405689-1100336 205.237075 -11.009337 0.15 11.934 12.50 AAA
13405672-1100293 205.236345 -11.008163 4.80 13.413 12.50 UBUFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212580872 205.2371 -11.0093 0.13 13.047 6
212580403 205.2193 -11.0205 74.61 14.000 6
212580429 205.2025 -11.0199 127.96 14.294 6
212579907 205.2083 -11.0316 129.53 12.226 6From Simbad, 0.48 arcsecs, 2MASS J13405689-1100336 -- Star, Proper motions mas/yr : -2.4 -15.3
Posted
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by
Dolorous_Edd
EPIC 212585579 from my list
IMO there are visible secondaries, starting from 2388.6 BKJD + plus visible companion star
CFHT R-band
Posted
-
by
Dolorous_Edd
EPIC 212697709
CFHT R-band
Posted
-
by
Dolorous_Edd
EPIC 212572452 and EPIC 212572439
CFHT R-band (left) / DSS 2 Red
In the center is EPIC 212572452 , to the right is 212572439
Both of them have 2.581d signal, BUT EPIC 212572452 aslo has 0.302d signal and EPIC 212572439 doesn't
and eclipses are deeper in EPIC 212572452 , just what is 0.302d signal??
A triple star system?
Posted
-
by
ajamyajax
Re 212572452 or 212572439 contaminated from Ivan's list: well if it helps perhaps we can rule out bound systems because the proper motions are significantly different (see below). And the dimmer star has a greater ~3.4% drop than the larger transit -- which is only ~0.4% in the brighter star.
So if 212572452 is farther away and dimmer and still has stronger transit signals, my guess is this star probably is the binary or trinary source.EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212572452 , 2MASS J13374603-1111319 , 12.678 , 12.038 , 11.868 , 0.64 , 0.17 , ('M7V', 0.098) , ('K7V', 0.64)
212572439 , 2MASS J13374562-1111331 , 11.646 , 11.234 , 11.114 , 0.412 , 0.12 , ('K1V', 0.86) , ('K3V', 0.81)
From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212572452 204.4418 -11.1922 0.15 14.769 6
212572439 204.4401 -11.1926 6.03 12.835 6PM for the dimmer 212572452 star:
Proper Motion (RA) [mas/yr],Proper Motion (Dec) [mas/yr]
25.000±2.400,33.100±2.800PM for the brighter 212572439 star:
Proper Motion (RA) [mas/yr],Proper Motion (Dec) [mas/yr]
-104.400±13.900,9.000±5.000Edit: it is possible the shorter period belongs to the brighter star, if a transiting object.
Posted
-
by
ajamyajax
Re 212672300 from Hans Martin's list: only two transit events, but could be a planet candidate if not glitches. 1.25x R_sol estimate. And looks like a fairly busy stellar neighborhood plus a close visual companion as seen on Aladin Lite (not pictured).
s1=2410.0 p1=39.705 d1=0.3 (7.2 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212672300 , 2MASS J13382614-0855378 , 11.881 , 11.664 , 11.570 , 0.217 , 0.094 , ('F7V', 1.21) , ('K0V', 0.89)
au min-max 0.23 0.275
stellar diameter in solar units min-max 1.16 1.42
stellar mass in solar units min-max 1.03 1.76
period in days min-max 39.697 39.713
duration in hours min-max 7.119 7.297Semi-Major Axis a (A.U.) = 0.245
Stellar diameter ratio = 1.25
Stellar mass ratio = 1.25
Period ~= 39.71 days
Duration ~= 7.2 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212672300 204.6089 -8.9271 0.20 12.846 6
212672982 204.5876 -8.9111 95.35 13.657 6
212670768 204.6073 -8.9633 130.27 12.946 6
212671294 204.6369 -8.9508 130.94 13.863 6
Posted
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by
ajamyajax
Re 212586717 from Ivan's list and HM's mention: my guess is this is a slightly eccentric EB because as HM noticed, every other transit event is slightly offset here.. But it appears they separately align close to P=8.592.
s1=2386.436 p1=8.592 d1=0.11 (2.64 hours)
s2=2390.765 p2=8.592 d2=0.09 (2.16 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212586717 , 2MASS J13551601-1052590 , 12.726 , 12.387 , 12.335 , 0.339 , 0.052 , ('G6V', 0.97) , ('F3V', 1.43)
Posted
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by
Dolorous_Edd
EPIC 21267230
Yeah, far from good
CFHT R-band
Posted
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by
ajamyajax
Re 212461484 from Hans Martin's mention: interesting possible transit for a bright star here at 7.976 KepMag, but difficult to tell if an object or just variable stellar activity. Just documenting our observations so far. Note nearby 212461116 looks like a galaxy; wonder why this is a K2 target.
s1=2386.57 p1=2.2695 d1=0.2 (4.8 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212461484 , 2MASS J13382776-1333217 , 7.134 , 6.949 , 6.899 , 0.185 , 0.05 , ('F5V', 1.32) , ('F1V', 1.5)
212461116 , 2MASS J13383231-1333514 , 14.516 , 13.718 , 13.196 , 0.798 , 0.522 , ('L0V', '...') , ('L0V', '...')
212460213 , 2MASS J13383433-1335027 , 11.725 , 11.229 , 11.140 , 0.496 , 0.089 , ('K3V', 0.81) , ('G9V', 0.91)
au min-max 0.045 0.045
stellar diameter in solar units min-max 2.61 2.74
stellar mass in solar units min-max 2.34 2.38
period in days min-max 2.26 2.279
duration in hours min-max 4.7 4.899From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212461484 204.6157 -13.5561 0.15 7.976 6
212461116 204.6346 -13.5643 72.52 15.898 6, 2MASX J13383233-1333517 -- Galaxy per Simbad
212460213 204.6431 -13.5841 139.25 13.299 6Listed as HD 118645 -- Star on Simbad, Proper motions mas/yr: -1.25 -4.59, Spectral type: F3V (~1.43 M_sol)
Credit: this test custom fit uses the Astropy modeling functions from http://docs.astropy.org/en/stable/modeling/index.html
Posted
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by
ajamyajax
Re 212658818 from Hans Martin's list: PC depth, but also a grazing or blended V-shaped fit with different stellar estimates here, so this one could be stellar. And a nearby visual companion seen on Aladin Lite.
s1=2384.45 p1=2.3204 d1=0.14 (3.36 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212658818 , 2MASS J13125829-0914273 , 10.850 , 10.488 , 10.405 , 0.362 , 0.083 , ('G8V', 0.94) , ('G8V', 0.94)
au min-max 0.035 0.04
stellar diameter in solar units min-max 1.38 1.68
stellar mass in solar units min-max 1.055 1.595
period in days min-max 2.312 2.328
duration in hours min-max 3.263 3.46From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212658818 198.2429 -9.2409 0.18 12.070 6
212657651 198.2495 -9.2681 100.67 16.856 6
212657265 198.2570 -9.2769 138.96 18.185 6
Posted
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by
ajamyajax
Re 212657240 from Hans Martin's list: not very good MAST data to work with here, but a possible high-impact small gas giant PC. 0.85x R_sol estimate.
s1=2397.4 p1=19.9 d1=0.18 (4.32 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212657240 , 2MASS J13142811-0916389 , 10.179 , 9.858 , 9.747 , 0.321 , 0.111 , ('G5V', 0.98) , ('K4V', 0.78)
au min-max 0.13 0.14
stellar diameter in solar units min-max 0.775 0.87
stellar mass in solar units min-max 0.74 0.925
period in days min-max 19.893 19.902
duration in hours min-max 4.223 4.414From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212657240 198.6171 -9.2775 0.11 11.294 6Listed as TYC 5537-574-1 -- Star on Simbad, Proper motions mas/yr : 0.7 12.7
Posted
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by
ajamyajax
Re 212651234 and 212651213 from Hans Martin's list: as HM pointed out, there is a marvelous multi-binary configuration in these two light curves.
The longer period system appears to be eccentric as illustrated below in magenta and orange. The short period transit could be two stars of equal size since no secondary is evident -- or just the primary is that much larger. We should check for a secondary again with more corrected data. I color-coded this transit all in cyan just for clarity.
The proper motions are also interesting and suggests to me these EPICs are gravitationally bound. See values below. So definitely another interesting find by Hans Martin that hopefully will get more study.
s1=2385.343 p1=2.5383 d1=0.19 (4.56 hours) --> could be times 2 for a binary period here
s2=2389.978 p2=13.191 d2=0.21 (5.04 hours)
s3=2395.29 p3=13.191 d3=0.27 (6.48 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212651234 , 2MASS J13554276-0925039 , 9.739 , 9.266 , 9.177 , 0.473 , 0.089 , ('K2V', 0.85) , ('G9V', 0.91)
212651213 , 2MASS J13554346-0925058 , 9.931 , 9.586 , 9.538 , 0.345 , 0.048 , ('G8V', 0.94) , ('F1V', 1.5)
From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212651234 208.9282 -9.4178 0.09 11.139 6
212651213 208.9311 -9.4183 10.54 10.796 6
212652164 208.9346 -9.3961 81.32 17.920 6, LINEAR 10202680 -- Variable Star of RR Lyr type per Simbad
212649874 208.9198 -9.4475 111.04 17.434 6
212651601 208.9771 -9.4095 176.28 17.073 6
212650580 208.8739 -9.4326 200.01 17.479 6
212652545 208.8692 -9.3877 235.81 10.219 6
212650453 209.0107 -9.4355 299.92 13.685 6PM for 212651234:
Proper Motion (RA) [mas/yr],Proper Motion (Dec) [mas/yr]
-32.600±1.900,-12.600±1.500PM for 212651213:
Proper Motion (RA) [mas/yr],Proper Motion (Dec) [mas/yr]
-29.700±1.300,-10.900±1.900
Posted
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by
Dolorous_Edd
About galaxy EPIC 212461116 sometimes it is deliberate like under GO1072 from K2C1
http://keplerscience.arc.nasa.gov/data/k2-programs/GO1072_Fanelli.pdf
This one may slip accidentally, since on large scale target selection is automated
EPIC 212658818
CFHT G-band
Posted
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by
Dolorous_Edd
EPIC 212657240
CFHT G-band
Posted
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by
ajamyajax
Re 212585579 from Ivan's list and Hans Martin's mention: possible blended binary here with an alternating depth fit.
s1=2385.546 p1=3.0215 d1=0.10 (2.4 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212585579 , 2MASS J13391579-1054250 , 11.655 , 11.330 , 11.288 , 0.325 , 0.042 , ('G8V', 0.94) , ('A7V', 1.76)
au min-max 0.035 0.04
stellar diameter in solar units min-max 0.75 0.93
stellar mass in solar units min-max 0.625 0.94
period in days min-max 3.013 3.03
duration in hours min-max 2.305 2.497From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212585579 204.8158 -10.9070 0.13 12.629 6
212585135 204.8157 -10.9164 33.92 17.778 6
212585966 204.7842 -10.8983 115.90 15.375 6
212586109 204.8484 -10.8951 123.01 18.051 6
212584099 204.8335 -10.9390 131.21 14.910 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag
212585579,5987.00,1.40,1.04,11.288
From VSX:
Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
0.56 Variable CSS_J133915.7-105458 -- 13 39 15.77 -10 54 58.5 Vir RRC 0.338984 17.11 (0.37) CV
Posted
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by
ajamyajax
Re 212628098 from Hans Martin's list: well with a 4.7% transit depth and a V-shaped fit a binary seems more likely here. However if using the NEA value of 0.63X R_sol for this star, an estimated PC radius would be ~14.9Re.
s1=2385.995 p1=4.3523 d1=0.085 (2.04 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212628098 , 2MASS J13210975-0956568 , 11.463 , 10.980 , 10.743 , 0.483 , 0.237 , ('K2V', 0.85) , ('M3V', 0.4)
au min-max 0.04 0.05
stellar diameter in solar units min-max 0.535 0.725
stellar mass in solar units min-max 0.45 0.88
period in days min-max 4.353 4.358
duration in hours min-max 2.068 2.258From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212628098 200.2906 -9.9492 0.19 13.259 6
212628295 200.2617 -9.9453 103.27 13.290 6
212627596 200.3295 -9.9611 144.61 17.160 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag
212628098,4480.00,0.63,0.69,10.743
Posted
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by
ajamyajax
Re 212587672 from Ivan's list and HM's mention: with the new NEA stellar radius value of 1.29 R_sol, this one looks like a mini gas giant instead of a smaller PC. But still looks ok as a planet candidate so far.
s1=2404.05 p1=23.214 d1=0.16 (3.84 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212587672 , 2MASS J13414671-1051447 , 11.181 , 10.911 , 10.857 , 0.27 , 0.054 , ('G2V', 1.0) , ('F6V', 1.25)
From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212587672 205.4447 -10.8624 0.12 12.188 6
212588180 205.4268 -10.8521 73.43 15.869 6
212587278 205.4643 -10.8713 76.27 9.492 6
212587958 205.4214 -10.8564 85.22 17.007 6
212586860 205.4173 -10.8802 116.11 16.296 6
212585874 205.4407 -10.9000 135.99 12.416 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag
212587672,6126.00,1.29,1.09,10.857
Listed as TYC 5549-288-1 -- Star on Simbad, Proper motions mas/yr : -12.1 -21.7
Posted
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ajamyajax
Re 212727054 and 212727070 from Hans Martin's list: these two EPIC's appear to be gravitationally bound with similar proper motions on NEA. Also 212727070 has the deeper transits as HM noted, and it is also dimmer. See the Simbad comments below as well. There might be a slight amount of ETV, but will need to look again with more corrected data.
212727054 primary transit depth ~14.4%
212727070 primary transit depth ~27.5%s1=2389.07 p1=15.502 d1=0.30 (7.2 hours)
s2=2397.121 p2=15.502 d2=0.30 (7.2 hours)EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212727054 , 2MASS J13252103-0735027 , 7.782 , 7.522 , 7.472 , 0.26 , 0.05 , ('G0V', 1.09) , ('F1V', 1.5)
212727070 , 2MASS J13252142-0735015 , 8.730 , 8.518 , 8.510 , 0.212 , 0.008 , ('F6V', 1.25) , ('B8V', 3.4)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212727054 201.3377 -7.5841 0.19 8.675 6
212727070 201.3393 -7.5838 5.97 9.444 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag
212727054,6205.00,1.62,1.24,7.472epic_number,k2_teff,k2_rad,k2_mass,k2_kmag
212727070,6128.00,1.69,1.13,8.510PM for 212727054:
Proper Motion (RA) [mas/yr],Proper Motion (Dec) [mas/yr]
22.500±2.080,-34.780±0.870PM for 212727070:
Proper Motion (RA) [mas/yr],Proper Motion (Dec) [mas/yr]
20.800±2.500,-36.400±2.500Listed on Simbad as HD 116681 -- Double or multiple star, 13 25 21.03882 -07 35 02.8767, Proper motions mas/yr : 22.50 -34.78, Spectral type: F3V (~1.43 M_sol)
(212727054) HD 116681A -- Star, 13 25 21.028 -07 35 02.90, Proper motions mas/yr : 4.9 -38.2
(212727070) HD 116681B -- Star, 13 25 21.429 -07 35 01.56, Proper motions mas/yr : 21.4 -38.1Posted
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by
JKD
EPIC 212509197 - pot. PC signal at 2437.05 BKJD, duration ~3.9hrs
Posted
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by
Dolorous_Edd
EPIC 212554013
According to NEA is 0.742 R.sol star with Teff 5124
Makes it ~10Re, slightly more convincing as HJ candidate
Posted
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by
Dolorous_Edd
EPIC 212803289 from Hans Martin's list
According to NEA is 1.589 Rsol star , Teff 6200
~8Re, also maybe interesting dip at 2427.2d
Posted
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by
Dolorous_Edd
EPIC 212499835
Listed on NEA as 0.743 Rsol, with Teff 5009
Such values will make it ~9-10 Re
Posted
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by
Dolorous_Edd
EPIC 212315941 from JKD's list
According to NEA is 0.681 Rsol, Teff 4909
~9Re candidate if not EB
Posted
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by
Dolorous_Edd
Quick note about EPIC 212426424
Listed on NEA as 0.629 R_sol , T_eff 4946
Posted
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by
ajamyajax
in response to Dolorous_Edd's comment.
Re 212499835's stellar radius of 0.74 R_sol by Huber et al: I think they are incorrect about this one for three reasons. I got an estimate radius of ~1.75 R_sol earlier using the observed transit's duration and period. And this star is the most distant of the dozen or so I just checked at 1014 parsecs, so 14.121 KepMag could be too dim in my opinion and throwing off their radius estimate. Note the PM values below are also very low meaning more distant. And I get a log(g) value of 4.11 using my modified flicker method, which is ~1.62 R_sol on my confirmed NEA planets data curve. And all of this is still a work in progress, but that's how I see it at the moment. 😃
epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212499835,5009.00,0.74,0.79,14.121,-4.200,3.600,1014.00
Posted
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by
JKD
EPIC 212535959 - an EB already mentioned by DE on page 4
maybe there’s an additional planetary signal at ~22410.8 BKJD, Duration ~2.9 hrs
Posted
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by
ajamyajax
Re 212394689 from Coughlin mention on ExoFOP-K2: one PC identified (P=6.676514) and there appears to be a second transit @ P=2.5891 which seems to work with similar constraints. 0.92x R_sol used for both radius estimates shown.
s1=2390.42 p1=6.678 d1=0.13542 (3.25 hours)
s2=2386.547 p2=2.5891 d2=0.09875 (2.37 hours) (new)EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212394689 , 2MASS J13342910-1502105 , 11.038 , 10.701 , 10.589 , 0.337 , 0.112 , ('G6V', 0.97) , ('K3V', 0.81)
Semi-Major Axis a (A.U.) = 0.067
Stellar diameter ratio = 0.92
Stellar mass ratio = 0.91
Period ~= 6.67 days
Duration ~= 3.25 hoursSemi-Major Axis a (A.U.) = 0.036
Stellar diameter ratio = 0.92
Stellar mass ratio = 0.91
Period ~= 2.59 days
Duration ~= 2.37 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212394689 203.6213 -15.0364 0.15 12.206 6
212393935 203.5932 -15.0534 115.35 12.600 6
212394504 203.5789 -15.0404 148.12 13.035 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212394689,5666.00,0.92,0.91,10.589,30.100,-53.500,259.50Listed as TYC 6121-11-1 -- Star on Simbad
Posted
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by
Dolorous_Edd
Cool find, how could I missed it during initial pass? my eyes must be got blurred
Posted
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by
ajamyajax
No worries, there will also be more. 😃
Posted
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by
ajamyajax
Re 212601505 from Hans Martin's list: a V-shaped fit and a ~2.5% drop in flux here, so my guess is a binary in this light curve. Always a chance for a PC though if the star is small as the colors suggest is possible.
s1=2384.8625 p1=0.7245 d1=0.08 (1.92 hours +/-)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212601505 , 2MASS J13303399-1033194 , 11.420 , 10.794 , 10.508 , 0.626 , 0.286 , ('K7V', 0.64) , ('M4V', 0.24)
au min-max 0.015 0.015
stellar diameter in solar units min-max 1.045 1.17
stellar mass in solar units min-max 0.835 0.88
period in days min-max 0.715 0.734
duration in hours min-max 1.821 1.986From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212601505 202.6417 -10.5554 0.16 14.486 6
212602539 202.6356 -10.5318 87.58 12.720 6
212600287 202.6489 -10.5825 100.91 18.269 6Updated:
epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212601505,3613.00,0.28,0.29,10.508,,,70.28(With a star radius of 0.28 R_sol per Huber and NEA, the transit depth could be super-Neptune in radius or greater.)
Posted
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by
Dolorous_Edd
Contamination
EPIC 212351542 - 2.54d p
PC
EPIC 212505404 p maybe dip d 2421
EPIC 212483657 - dip d2449
EPIC 212459241 - 2436
EPIC 212459188 - dip d2427
EPIC 212285811 - dip 2387.3d
EPIC 212315444 - maybe dip 2408d
EPIC 212318414 - maybe dip 2460d
EPIC 212318694 - maybe dip 2434d
EPIC 212329998 - maybe dip 2413d
EPIC 212330666 - maybe dip 2392d glitch most likely
EPIC 212331504 - maybe dip 2393d glitch most likely
EPIC 212333950 - maybe dip 2438d
EPIC 212334655 - maybe dip 2418
EPIC 212340960 - maybe dip 2401
EPIC 212357477 - period 6.327; ~Est. Rad 2.38Re
EPIC 212371047 - maybe dip 2407d
EPIC 212373342 - maybe dip 2454d
EPIC 212373636 - maybe dip 2422
EPIC 212373636 - good dip at 2401
EPIC 212375661 - dip at 2407
EPIC 212398633 - maybe long dip at 2426, maybe glitch
EB:
EPIC 212306405 - something with 0.317d period, shallow depth
EPIC 212315941 - maybe third transit @2411 @2402 maybe@2434
EPIC 212334655 - maybe dips at 2430 and 2432
EPIC 212337102 - maybe EB, 0.4d period
EPIC 212357047 - maybe EB 0.324 period
EPIC 212357329 - maybe EB 2.223 period
EPIC 212358393 - maybe 0.226d p, shallow depth
EPIC 212362217 - maybe 1.3d p , shallow depth
EPIC 212370247
EPIC 212406350 - p0.8d
EPIC 212417890 - maybe d ~25,8 ; start = 2398bjd
EPIC 212443457 - 24d period, EB likely
EPIC 212454161 - EB, 22d period
EPIC 212466858 - dip 2392d near glitch area
EPIC 212480208 - maybe dip d2392
EPIC 212509747 - maybe HB maybe not
Other:
EPIC 212307944 - why brightness rising so much? steep rising from 0.9 to 1.7 why????
EPIC 212340408 - maybe EB, some dips are visible despite noise
EPIC 212343479 - powerful flares?
EPIC 212358192 - maybe EB , see 2407 and 2424
EPIC 212359838 - sort of loong dip start at 2422
EPIC 212477591 - maybe HB
Posted
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by
JKD
in response to Dolorous_Edd's comment.
EPIC 212285811 looks really interesting.
In K2_C6 Corr it looks like a perfect transit at 2387.32 BKJD with a Duration of ~4.90 hrs and a Signal Depth of ~3700 ppm.
No repeat.
Posted
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by
JKD
in response to Dolorous_Edd's comment.
EPIC 212549089 - EB already mentioned by DE on page 4, Duration ~14.22 hrs, Signal Depth ~53700 ppm
Posted
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by
Dolorous_Edd
EPIC 212394689 by ajamyajax
2.589 signal appears to be real
Posted
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by
JKD
in response to Dolorous_Edd's comment.
EPIC 212394689
transit signal with p ~ 2.589 d
Posted
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by
JKD
EPIC 212552766 - maybe a (speculative) PC
S1 ~ 2384.83 BKJD, Duration ~ 3.9 hrs
Depth ~ 600 ppm
Posted
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by
Dolorous_Edd
EPIC 212321305 from JKD's list now with 2 transits period 34.132, S1 = 2395; ~6.2Re
Close companion is seen in DSS
Posted
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by
zoo3hans
Hm, I see, the new C6-K2-Korr data from Andrew has arrived. So I will also have another look at C6. Below I list possible additional candidates, which I have not yet mentioned on page 1 of this thread:
Glitches:
BKJD 2387.89
BKJD 2398.43
PC candidates:
EPIC numbers below 2126xxxxx are checked by others (JKD, DE, Mark,..), so I stop here now.
EPIC 212613520 Maybe long transit at BKJD 2427.9, duration 10.5 hours, depth 0.0005
EPIC 212633059 Maybe transit at BKJD 2392.46, duration about 4 hours, depth 0.0029, although rather V-shaped
EPIC 212634172 P=2.852 days, starting at BKJD 2387.44, duration 2 hours, depth 0.004
EPIC 212637507 Difficult LC, but maybe transit at BKJD 2408.0, duration about 5 hours, depth 0.002
EPIC 212639319 P=13.84 days, starting at BKJD 2389.43, duration about 3 hours, depth 0.002
EPIC 212644491 P=2.995 days, starting at BKJD 2386.42, duration about 5 hours, depth 0.0015
EPIC 212648083 P=20.58 days, starting at BKJD 2396.78, duration about 5 hours, depth 0.0007
EPIC 212672142 Maybe transit at BKJD 2448.72, duration about 10.5 hours, depth 0.0005
EPIC 212676585 P=53.1 days, at BKJD 2397.44 and 2450.54, duration about 7 hours, depth 0.0018
EPIC 212689874 Mentioned on page1 is actually a multiplanet system: P1=15.855 days, starting at BKJD 2392.04, duration about 4.5 hours, depth 0.0009, P2=28.46 days, starting at BKJD 2410.02, duration about 6.5 hours, depth 0.0007
EPIC 212690867 P=25.87 days, starting at BKJD 2396.58, duration about 4 hours, depth 0.003
EPIC 212691422 P=48.32 days, transit at BKJD 2394.90 and 2443.22, duration about 12 hours, depth 0.0006
EPIC 212703473 Multiplanet system, P1=6.79 days, starting at BKJD 2389.74, duration about 4 hours, depth 0.0003, P2=18.515 days, starting at BKJD 2388.17, duration about 4 hours, depth 0.0002
EPIC 212735333 P=8.36 days, starting at BKJD 2385.18, duration about 4 hours, depth 0.0006
EPIC 212737443 Already mentioned on page 1 with P1=13.6 days , now appears to have a second planet with P2=65.52 days (BKJD 2460.34 and 2394.82)
EPIC 212772113 P=8.953 days, starting at BKJD 2390.79, duration about 2 hours, depth 0.0011
EPIC 212772313 Maybe transits at BKJD 2387.87 and 2430.7 which would give a period of 42.83 days. Duration about 6.5 hours, depth 0.0004. The shape looks very similar, but with "wings": maybe an extended atmoshere or ring system around it?
EPIC 212779596 Obviously a multiplanet system, P1=7.374 days, starting at BKJD 2389.94, duration 3.5 hours, depth 0.0018, P2=3.2255 days, starting at BKJD 2385.75, duration 3.0 days, depth 0.0008
EPIC 212801236 Maybe transit at BKJD 2424.80, duration 4.5 hours, depth 0.0014
EPIC 212806114 Maybe transit at BKJD 2427.32, duration 3 hours, depth 0.001
EPIC 212808161 Maybe transit at BKJD 2424.77, duration 4.5 hours, depth 0.003
EPIC 212810852 Maybe transit at BKJD 2391.92, duration about 18 hours, depth 0.001
EPIC 212814042 Maybe transit at BKJD 2398.34, duration 5.5 hours, depth 0.0027
EPIC 212820423 Very nice single transit at 2433.38, depth 0.0065, duration 22.0 hours, U-shaped
EPIC 212826911 Maybe transit at BKJD 2444.12, depth 0.0005, duration 11 hours
EPIC 212833814 P=55.64 days, 2 transits, at BKJD 2403.15 and 2458.79, duration about 13 hours, depth 0.0003 (about 1.85 R_Earth).
EPIC 212839127 P=20.6467 days EB (mentioned on page 1 already), but maybe circumbinary planet at BKJD 2397.54, 2412.02, 2427.75, depth about 0.002, duration about 3 hours
EPIC 212839544 Maybe transit at BKJD 2393.35, although very near glitch area, duration about 5.5 hours, depth 0.003
EPIC 212842100 Very long transit around BKJD 2430.6, duration about 6.5 days (!), depth 0.003 (about 2 R_Earth).
EPIC 212844216 P=12.62 days, starting at BKJD 2396.53, duration about 6 hours, depth 0.001
EPIC 229227230 Maybe long transit at BKJD 2427.0, duration about 1.6 days, depth 0.08, maybe stellar
EPIC 229227402 Maybe transit at BKJD 2392.82, duration 6.5 hours, depth 0.031
EPIC 229227516 Maybe transit at BKJD 2392.46, duration 4 hours, depth 0.052, V-shaped, maybe EB
EPIC 229227823 Maybe transit at BKJD 2451.91
EPIC 229227955 Maybe transit at BKJD 2415.4. Other interesting dips as well.
EB candidates;
EPIC 212692941 Maybe transit at BKJD 2400.9, duration about 4 hours, depth 0.08
Posted
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by
JKD
in response to Dolorous_Edd's comment.
EPIC 212321305 - agree and thanks. No doubt, corrected LCs provide more precise data
Posted
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by
JKD
in response to Dolorous_Edd's comment.
EPIC 212554009 - an EB mentioned by DE on page 4
S at 2462.24 BKJD, Duration ~25.49 hrs, dFlux ~14.1%Posted
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by
JKD
EPIC 212444926, S1 at 2416.43 BKJD, Duration ~50.5 hrs, Depth ~9000 ppm (a maybe PC)
EPIC 212558371, S at 2420.55 BKJD, Duration ~95.6 hrs, Depth ~450 ppm (very enthusiastic EB)
Posted
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by
Dolorous_Edd
In my list, just to highlight
EPIC 212357477 - period 6.327; ~Est. Rad 2.38Re
Posted
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by
ajamyajax
Many thanks to Andrew and Al for the corrected data!
Very helpful for our work here, that's for sure.
Posted
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by
ajamyajax
Re 212321305 from JKD's list and Ivan's mention: agree, this one could be a gas giant planet candidate where hopefully the visual companion will be resolved.
My opinion is the longer duration supports a larger star however, perhaps an evolved ~1.73 R_sol. But that could help the PC chances a bit with the radius estimate outside the sub-Saturn desert as shown below.s1=2395.935 p1=34.132 d1=0.39 (9.36 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212321305 , 2MASS J13383408-1654364 , 12.881 , 12.508 , 12.467 , 0.373 , 0.041 , ('G9V', 0.91) , ('A7V', 1.76)
au min-max 0.225 0.225
stellar diameter in solar units min-max 1.72 1.74
stellar mass in solar units min-max 1.305 1.305
period in days min-max 34.124 34.124
duration in hours min-max 9.284 9.392Semi-Major Axis a (A.U.) = 0.225
Stellar diameter ratio = 1.732
Stellar mass ratio = 1.3
Period ~= 34.121 days
Duration ~= 9.361 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212321305 204.6420 -16.9101 0.01 13.861 6
212322069 204.6610 -16.8873 104.97 13.437 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212321305,5808.00,0.92,0.87,12.467,9.500,-27.000,639.10
Posted
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by
ajamyajax
Re 212357477 from Ivan's list: this nicely periodic transit could be a high-impact mini gas giant or a blended binary. The apparent blending could be from a nearby star and a very bright visual neighbor. Fairly high proper motions also.
s1=2388.25 p1=6.324 d1=0.1517 (3.64 hours or less)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212357477 , 2MASS J13280398-1556162 , 9.081 , 8.748 , 8.687 , 0.333 , 0.061 , ('G6V', 0.97) , ('F7V', 1.21)
Semi-Major Axis a (A.U.) = 0.068
Stellar diameter ratio = 1.1
Stellar mass ratio = 1.05
Period ~= 6.321 days
Duration ~= 3.6391 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212357477 202.0166 -15.9378 0.14 10.215 6
212357743 202.0335 -15.9305 64.06 11.479 6
212356580 202.0018 -15.9596 93.72 14.082 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212357477,5886.00,1.10,1.05,8.687,-99.200,-37.300,133.70Listed as BD-15 3672 -- Star on Simbad, 13 28 03.9924 -15 56 16.187, Proper motions mas/yr: -95.00 -36.60.
Posted
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by
ajamyajax
Re 212820423 from Hans Martin's list: this star is a giant or subgiant per Huber/NEA, but I think the transit should repeat if the star is that size. So the period might need to be greater than 49 days for only one transit event to appear, putting the star size at ~3.43 R_sol or smaller. And assuming the object transits at the equator. Even at this smaller estimate though, the radius still appear stellar.
s1=2433.345 p1=49.148 d1=0.92 (22 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212820423 , 2MASS J13415611-0453412 , 10.447 , 9.923 , 9.793 , 0.524 , 0.13 , ('K3V', 0.81) , ('K6V', 0.7)
Semi-Major Axis a (A.U.) = 0.123
Stellar diameter ratio = 5.11
Stellar mass ratio = 1.12
Period ~= 14.87 days
Duration ~= 22.0055 hoursSemi-Major Axis a (A.U.) = 0.273
Stellar diameter ratio = 3.43
Stellar mass ratio = 1.12
Period ~= 49.148 days
Duration ~= 22.0024 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212820423 205.4839 -4.8948 0.10 11.950 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212820423,4820.00,5.11,1.12,9.793,-4.600,-11.200,948.50
Posted
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by
JKD
EPIC 212562715 - PC at ~2387.46 BKJD, p =13.5 d
Posted
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by
Dolorous_Edd
in response to JKD's comment.
Yep, looks like it
Though there is a close companion nearby
Posted
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by
Dolorous_Edd
EPIC 212398486 - period 21.744d , start 2388BJD ; Small planet?
EPIC 212398508 - 2 transits; 46.432d period, start at 2404
Posted
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by
ajamyajax
Re 212562715 from JKD's list and Ivan's mention: another blend with several visual companions in the neighborhood, but a possible mini gas giant planet candidate. An alternating fit looked ok here supporting this idea.
s1=2387.465 p1=13.5261 d1=0.1859625 (4.4631 hours or less)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212562715 , 2MASS J13284030-1123574 , 11.955 , 11.646 , 11.538 , 0.309 , 0.108 , ('G4V', 0.99) , ('K2V', 0.85)
Semi-Major Axis a (A.U.) = 0.111
Stellar diameter ratio = 1.03
Stellar mass ratio = 1.0
Period ~= 13.526 days
Duration ~= 4.4631 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212562715 202.1679 -11.3993 0.12 13.046 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212562715,5763.00,1.03,1.00,11.538,-6.100,13.300,457.80From Simbad, the very bright source visible on Aladin Lite:
BD-10 3672B -- Star in double system, 13 25 13.3 -11 08 57 (J1325133-110857)
PMSC 13199-1038 -- Double or multiple star, 13 25 11.6 -11 09 40 (J1325116-110940)
Posted
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by
ajamyajax
Re 212398486 from Ivan's list: yes, looks like a small planet candidate to me also. It could be a super-Earth if we use the Huber/NEA radius of 0.23 R_sol as shown. My guess is a M-dwarf about half the size of our Sun based on this estimated transit duration, but any planet find is a good find.
s1=2388.347 p1=21.746 d1=0.13 (3.12 hours +/-)
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212398486 , 2MASS J13363410-1456512 , 12.609 , 12.044 , 11.802 , 0.565 , 0.242 , ('K6V', 0.7) , ('M2V', 0.5)
au min-max 0.13 0.13
stellar diameter in solar units min-max 0.51 0.54
stellar mass in solar units min-max 0.62 0.62
period in days min-max 21.742 21.742
duration in hours min-max 3.036 3.215From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212398486 204.1421 -14.9476 0.09 15.147 6
212398674 204.1630 -14.9430 74.47 17.545 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212398486,3472.00,0.23,0.23,11.802,-55.800,-48.700,76.53
Posted
-
by
JKD
EPIC 212563850 maybe a 2 planet system with TTV
s1 at 2389.72 BKJD, p1 =14.03 d, Re ~1.33
s2 at 2459.22 BKJD, p2 =55.09 d, Re ~1.72
Posted
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by
Dolorous_Edd
in response to JKD's comment.
s2 at 2459.22 BKJD, p2 =55.09 d, Re ~1.72
IMO single dip at 2459, period is more than 55d
s1 at 2389.72 BKJD, p1 =14.03 d, Re ~1.33
Is real
One problem though
and it is definitely in aperture
I also have to mention very bright star ~26' to the NE which is BD-10 3672B
Some good news, it is Kep mag 13 star which is way better than 15
Posted
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by
Dolorous_Edd
EPIC 212428509 - period 2.66; EB? looks like
debatable
EPIC 212421749 - 25.346p, second transit at 2432
EPIC 212422536 - 15.688, last transit 2460
EPIC 212431715 - 2411
EPIC 212433726 - 2417
Posted
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by
JKD
in response to Dolorous_Edd's comment.
EPIC 212421749 - looks promising. Potential transits at
2407.306 - 2432.764 - 2458.150 with an average p ~25.422 d, a similar Flux ~0.2% and Re ~12
Posted
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by
JKD
EPIC 212421749 - IMO it looks promising. Potential transits at
2407.306 - 2432.764 - 2458.150 with an average p ~25.422 d and similar Flux 0.2% and Re ~12
Posted
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by
JKD
EPIC 212568066 - already mentioned by DE on page 4, p ~7.11d
Agree, maybe there is something else around
Posted
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by
Dolorous_Edd
EPIC 212440430 - period 19.999; start 2395
transit at 2424 glitch?
Posted
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by
ajamyajax
Re 212844216 from Hans Martin's list: a possible three candidate MPC here with Andrew's more corrected data. However this is complicated by possible contamination in nearby visual companion 212844260 (shown). But still treating this as a PC especially with possible multiple blended transits. The ephemeris durations are based on the Huber/NEA stellar values.
s1=2396.62 p1=12.595 d1=0.099275 (2.3826 hours)
s2=2389.93 p2=8.865 d2=0.08835 (2.1204 hours)
s3=2393.72 p3=15.35 d3=0.106083 (2.546 hours)EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212844216 , 2MASS J13291264-0403258 , 12.866 , 12.351 , 12.294 , 0.515 , 0.057 , ('K3V', 0.81) , ('F6V', 1.25)
212844260 , 2MASS J13291313-0403194 , 12.059 , 11.523 , 11.378 , 0.536 , 0.145 , ('K3V', 0.81) , ('K5V', 0.75)Semi-Major Axis a (A.U.) = 0.085
Stellar diameter ratio = 0.45
Stellar mass ratio = 0.51
Period ~= 12.585 days
Duration ~= 2.3826 hoursSemi-Major Axis a (A.U.) = 0.067
Stellar diameter ratio = 0.45
Stellar mass ratio = 0.51
Period ~= 8.87 days
Duration ~= 2.1204 hoursSemi-Major Axis a (A.U.) = 0.097
Stellar diameter ratio = 0.45
Stellar mass ratio = 0.51
Period ~= 15.356 days
Duration ~= 2.546 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212844216 202.3027 -4.0572 0.19 13.429 6
212844260 202.3048 -4.0555 9.76 13.429 6
212844028 202.2688 -4.0639 124.14 14.306 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212844216,4495.00,0.45,0.51,12.294,-98.900,-106.500,192.90
212844260,4638.00,0.67,0.73,11.378,44.600,20.600,242.20
Posted
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by
ajamyajax
Re 212563850 from JKD's list and Ivan's mention: well again two nearby stars that are K2 targets with 212563954 only 9.65 arcsecs away, and it has the same possible transits as 212563850.. And there could also be PCs here with all radii estimates being this small. Perhaps the stellar dimensions are a bit low though due to blending. Also and not pictured, but the second object could be ~1.9Re if a 0.56 R_sol star and not a glitch.
s1=2389.76 p1=14.305 d1=0.11583 (2.78 hours)
s2=2459.245 p2=? d2=0.25 (6.0 hours)
s3=2389.42 p3=7.55 d3=0.093775 (2.2506 hours) --> more speculative and blended at timesEPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212563850 , 2MASS J13232364-1122290 , 11.165 , 10.555 , 10.398 , 0.61 , 0.157 , ('K6V', 0.7) , ('K6V', 0.7)
212563954 , 2MASS J13232345-1122199 , 12.449 , 11.852 , 11.621 , 0.597 , 0.231 , ('K5V', 0.75) , ('M1V', 0.52)Semi-Major Axis a (A.U.) = 0.102
Stellar diameter ratio = 0.56
Stellar mass ratio = 0.7
Period ~= 14.305 days
Duration ~= 2.7844 hoursSemi-Major Axis a (A.U.) = 0.475
Stellar diameter ratio = 0.56
Stellar mass ratio = 0.7
Period ~= 143.142 days
Duration ~= 6.0001 hoursSemi-Major Axis a (A.U.) = 0.067
Stellar diameter ratio = 0.56
Stellar mass ratio = 0.7
Period ~= 7.554 days
Duration ~= 2.2506 hours-or-
Semi-Major Axis a (A.U.) = 0.089
Stellar diameter ratio = 0.41
Stellar mass ratio = 0.46
Period ~= 14.299 days
Duration ~= 2.3445 hoursSemi-Major Axis a (A.U.) = 0.583
Stellar diameter ratio = 0.41
Stellar mass ratio = 0.46
Period ~= 239.725 days
Duration ~= 6.0004 hoursSemi-Major Axis a (A.U.) = 0.058
Stellar diameter ratio = 0.41
Stellar mass ratio = 0.46
Period ~= 7.561 days
Duration ~= 1.8959 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212563850 200.8485 -11.3748 0.21 13.172 6
212563954 200.8477 -11.3722 9.65 14.601 6
212564211 200.8545 -11.3667 35.83 12.972 6
212564639 200.8164 -11.3564 131.25 12.982 6
212565326 200.8697 -11.3427 137.46 10.469 6
212562669 200.8182 -11.4006 141.84 16.938 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212563850,3986.00,0.41,0.46,10.398,,,78.02
212563954,3663.00,0.29,0.30,11.621,,,85.39From Simbad/as Ivan also mentioned, the very bright source visible on Aladin Lite:
BD-10 3672B -- Star in double system, 13 25 13.3 -11 08 57 (J1325133-110857)
PMSC 13199-1038 -- Double or multiple star, 13 25 11.6 -11 09 40 (J1325116-110940)
Posted
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by
JKD
EPIC 212573842 - signal at 2433.28 BKJD, p =unknown, Duration ~2.45 hrs, Flux ~0.4%
Posted
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by
JKD
EPIC 212577658 - PC with s =2388.33 BKJD, p =14.07 d, Duration ~3.92 hrs, Depth ~500 ppm
Posted
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by
ajamyajax
Re 212428509 from Ivan's list: yes, this one looks stellar but a close call depth-wise. With the Huber/NEA value of 0.96 R_sol, an approx radius would be 10-11Re for a grazing HJ. There does seem to be an offset in an alternating fit which supports a binary here.
s1=2386.835 p1=2.668 d1=0.13 (3.12 hours or less)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212428509 , 2MASS J13343085-1416178 , 11.375 , 11.085 , 10.976 , 0.29 , 0.109 , ('G1V', 1.07) , ('K2V', 0.85)
au min-max 0.04 0.045
stellar diameter in solar units min-max 1.27 1.53
stellar mass in solar units min-max 1.195 1.72
period in days min-max 2.659 2.674
duration in hours min-max 3.02 3.217Semi-Major Axis a (A.U.) = 0.036
Stellar diameter ratio = 0.96
Stellar mass ratio = 0.86
Period ~= 2.657 days
Duration ~= 2.5427 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212428509 203.6285 -14.2716 0.08 12.483 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212428509,5915.00,0.96,0.86,10.976,-55.500,7.300,335.00
Posted
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by
ajamyajax
Re 212398508 from Ivan's list: a bit ragged, but maybe a mini gas giant planet candidate here. Huber/NEA 0.88x R_sol if a 6-hour duration. Note the 9x R_sol giant visual neighbor is separated in distance and proper motions.
s1=2404.29 p1=46.41 d1=0.3 (7.2 hours or less)
Semi-Major Axis a (A.U.) = 0.238
Stellar diameter ratio = 0.88
Stellar mass ratio = 0.84
Period ~= 46.418 days
Duration ~= 6.0958 hoursEPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212398508 , 2MASS J13343092-1456497 , 12.422 , 12.098 , 11.951 , 0.324 , 0.147 , ('G5V', 0.98) , ('K5V', 0.75)
212399273 , 2MASS J13342997-1455477 , 7.478 , 6.968 , 6.776 , 0.51 , 0.192 , ('K3V', 0.81) , ('K8V', 0.62)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212398508 203.6289 -14.9472 0.20 13.629 6
212399273 203.6248 -14.9299 63.72 9.093 6, HD 118040 -- Star per Simbad, Proper motions mas/yr : -45.8 19.3, Spectral type: K0IIIepic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212398508,5739.00,0.88,0.85,11.951,-4.800,-40.700,484.30
212399273,4690.00,9.02,1.13,6.776,-45.800,19.300,385.30
Posted
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by
Dolorous_Edd
in response to JKD's comment.
EPIC 212577658 from JKD's list
The fold looks nice
BUT
CFHT - R band
I don't like the second pair of diffraction spikes and general extended shape of the source
IMO there is a second star very close
difficult to show this, thanks to the masked region in the center, but here is how I see it
also depth seems to vary a tiny fraction
Posted
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by
Dolorous_Edd
EPIC 212460519 - period 7.385
Posted
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by
ajamyajax
Re 212421749 from Ivan's list and JKD's mention: neat, this could be a Saturn-class planet candidate if this star a 2.64 R_Sol subgiant (Huber/NEA).
s1=2407.40 p1=25.37 d1=0.14 (3.36 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212421749 , 2MASS J13231635-1425273 , 13.161 , 12.679 , 12.615 , 0.482 , 0.064 , ('K2V', 0.85) , ('F9V', 1.14)
From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212421749 200.8181 -14.4243 0.13 14.515 6
212423014 200.8309 -14.3961 110.77 13.738 6
212423102 200.8081 -14.3941 114.07 13.996 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212421749,5081.00,2.64,0.90,12.615,-9.300,1.700,1846.00
Posted
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by
ajamyajax
Re 212779596 from Hans Martin's list: indeed, a clean LC probably hosting two planet candidates. Duration fits suggest a bit larger star at ~0.90 R_sol. Also note the nearby visual companion 212779533 is a K2 target but does not appear to be bound to 212779596 (see distance values below). And there is little evidence of transit contamination there, but it is 80.48 arcsecs distant.
s1=2389.94 p1=7.3716 d1=0.1333 (3.2 hours)
s2=2385.75 p2=3.22475 d2=0.10 (2.4 hours)EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212779596 , 2MASS J13553641-0608100 , 10.277 , 9.726 , 9.625 , 0.551 , 0.101 , ('K4V', 0.78) , ('K3V', 0.81)
212779533 , 2MASS J13553103-0608168 , 15.266 , 14.706 , 14.567 , 0.56 , 0.139 , ('K6V', 0.7) , ('K5V', 0.75)au min-max 0.065 0.08
stellar diameter in solar units min-max 0.77 1.005
stellar mass in solar units min-max 0.675 1.255
period in days min-max 7.367 7.381
duration in hours min-max 3.106 3.299au min-max 0.035 0.045
stellar diameter in solar units min-max 0.705 0.98
stellar mass in solar units min-max 0.55 1.175
period in days min-max 3.217 3.23
duration in hours min-max 2.304 2.499From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212779596 208.9017 -6.1361 0.16 11.930 6
212779533 208.8793 -6.1380 80.48 16.872 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212779596,4731.00,0.70,0.78,9.625,-57.600,17.900,115.10
212779533,4678.00,0.62,0.66,14.567,9.000,-2.000,974.80
Posted
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by
Dolorous_Edd
EPIC 212480208 - period 10.099
EPIC 212484205 - dip d2434
EPIC 212484349 - dip d2388, maybe repeat d2438
EPIC 212484349 - maybe dip d 2438
small note: EPIC 212421749 and EPIC 212585579 were frpm my list
Posted
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by
ajamyajax
in response to Dolorous_Edd's comment.
Re: EPIC 212421749 and EPIC 212585579 from your list
All right, proper credit fixed there I hope.
Posted
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by
zoo3hans
in response to JKD's comment.
Yes, I agree with EPIC 212577658, P=14.065 days, starting at BKJD 2388.33, duration about 4.5 hours, depth 0.0005
Posted
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by
zoo3hans
in response to JKD's comment.
Yes, I agree with EPIC 212568066 P=7.117 days, starting at BKJD 2388.45, duration about 11 hours, depth 0.042
Posted
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by
Dolorous_Edd
EPIC 212492913 - dip 2455
EPIC 212493274 - same dip at 2454
EPIC 212493373 - dip d2451
EPIC 212495601 - dip 2440
EPIC 212496592 - something with 2.589d period? i.e 2446
Glitch area?
Posted
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by
JKD
EPIC 212587672 - a PC (first mentioned by DE, see page 6, 8 and commented by ajamyajax on page 10)
s1 =2404.05 BKJD, p =23.216d, Debt ~700 ppm, Duration ~3.92 hrs
maybe there is something (moon ? ) nearby
Posted
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by
zoo3hans
in response to JKD's comment.
Hm, where do you see such a feature? I see 3 "normal" transits:
Posted
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by
ajamyajax
in response to Dolorous_Edd's comment.
Maybe just two lists would help? One after MAST, one after Andrew's corrections?
Posted
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by
ajamyajax
Re 212577658 from JKD's list: and maybe a nice planet candidate between a super-Earth and a mini gas giant. 0.88 R_sol estimate or so. And possible limb darkening also makes this one interesting. A few smaller stars in the stellar neighborhood is all. Edit: could be two stars at this target location however; see DE's post on previous page. And what looks like limb darkening could just be a truncated binary.
s1=2388.33 p1=14.068 d1=0.17 (4.08 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212577658 , 2MASS J13550080-1104474 , 10.335 , 9.987 , 9.883 , 0.348 , 0.104 , ('G8V', 0.94) , ('K2V', 0.85)
au min-max 0.1 0.12
stellar diameter in solar units min-max 0.8 1.0
stellar mass in solar units min-max 0.675 1.165
period in days min-max 14.058 14.071
duration in hours min-max 3.983 4.178From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212577658 208.7534 -11.0798 0.17 11.541 6
212577263 208.7384 -11.0877 59.97 18.079 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212577658,5415.00,0.88,0.94,9.883,-43.100,-5.900,172.80Listed as UCAC2 27850466 -- Star on Simbad
Posted
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by
ajamyajax
Re 212703473 from Hans Martin's list: and another nice two planet MPC found by HM as well. This star said to be a giant or subgiant by Huber/NEA, but the transit durations suggest a slightly blended G1V. And the longer period PC radii estimate could be longer as well if grazing or more of a limb darkening effect from a higher impact transit perhaps. 1.07 R_sol estimate here.
s1=2389.74 p1=6.787 d1=0.134 (3.22 hours)
s2=2388.17 p2=18.515 d2=0.18 (4.32 hours)EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212703473 , 2MASS J13245676-0810183 , 9.694 , 9.402 , 9.307 , 0.292 , 0.095 , ('G1V', 1.07) , ('K2V', 0.85)
au min-max 0.06 0.075
stellar diameter in solar units min-max 0.775 1.03
stellar mass in solar units min-max 0.625 1.225
period in days min-max 6.778 6.792
duration in hours min-max 3.121 3.32au min-max 0.125 0.13
stellar diameter in solar units min-max 0.805 0.87
stellar mass in solar units min-max 0.76 0.855
period in days min-max 18.515 18.516
duration in hours min-max 4.233 4.41From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212703473 201.2365 -8.1717 0.19 10.729 6
212703329 201.2489 -8.1753 45.89 15.050 6
212703844 201.2005 -8.1627 132.47 14.101 6
212702970 201.1995 -8.1843 139.51 14.584 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212703473,5951.00,1.76,1.19,9.307,-5.900,-4.600,283.10Listed as BD-07 3612 -- Star on Simbad
Posted
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by
Dolorous_Edd
EPIC 212577658
I kinda suspect there is a close star nearby see previous page
Posted
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by
ajamyajax
Oh yeah, sorry. It was late... Edited my previous comment to add your earlier observation.
p.s. on the bright side, I have my own quick look K2 corrections software program coming along now.. It won't be as good as Andrew's for identifying smaller possible planet transits, but it does appear to show the larger periodic transits clearly in my tests so far. Kind of like a mini-MAST look if you can imagine that. When the C7 FITS files are available, I'll try to put together a compressed set of CSV data files for you guys to download.
Posted
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by
zoo3hans
in response to ajamyajax's comment.
Cool, this sounds interesting!
Posted
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by
Dolorous_Edd
From HM list and ajamyajax mention
EPIC 212703473
CFHT R-band image
Posted
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by
ajamyajax
Re 212496592 from Ivan's list: blended but still looks good as a less common K2 super-Earth planet candidate. Stellar estimates seem to be consistent around 0.85 R_sol. And alternating fits at this period and the half-period showed no sign of a bgeb. Note the proper motions listed here differ but are probably not an issue. Also there is a bright source in a closer-by-distance giant which is listed below.
s1=2386.55 p1=2.8592 d1=0.10 (2.4 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212496592 , 2MASS J13263339-1248235 , 11.608 , 11.177 , 11.077 , 0.431 , 0.1 , ('K1V', 0.86) , ('K3V', 0.81)
au min-max 0.035 0.04
stellar diameter in solar units min-max 0.79 0.985
stellar mass in solar units min-max 0.695 1.05
period in days min-max 2.852 2.869
duration in hours min-max 2.302 2.5From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212496592 201.6392 -12.8066 0.16 12.966 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212496592,5223.00,0.85,0.87,11.077,-8.200,-20.500,300.60from Simbad:
0.20 arcsecs: 2MASS J13263339-1248235 -- Star, Proper motions mas/yr : 2.2 -3.8
383.72 arcsecs: i Vir -- Variable Star, 13 26 43.16719 -12 42 27.5879, Proper motions mas/yr : -129.31 -20.83, Spectral type: K5III
Posted
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by
JKD
EPIC 212590677 - s =2438.07 BKJD, Duration ~2.94 hrs, Flux ~1%, Re ~22.6
Thanks DE, of course it was a typo.
I’ve changed the EPIC from 242590677 to the correct EPIC 212590677
Posted
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by
Dolorous_Edd
in response to JKD's comment.
Perhaps you meant EPIC 212590677
Posted
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by
zoo3hans
in response to ajamyajax's comment.
For the fun of it I tried an AKO image again: (P=2.8592 days, boxcar filtering)
Posted
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by
JKD
in response to Dolorous_Edd's comment.
Thanks for your hint. I’ve corrected the EPIC
BR
HansPosted
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by
Dolorous_Edd
PC
EPIC 212548141 - shallow transits; likely EB period 0.255d
EPIC 212545462 - doubtful dip at 2461
EPIC 212530632 - dip 2420.7
EPIC 212517604 - dip at 2443.7
EPIC 212542155 - one dip, but looks good 2389.7
EPIC 212530118 - maybe period 12.835; start 2397d
EPIC 212460519 - period 7.385 (from page 15; possible small planet )
EPIC 212549780 - possible FP , but maybe 13d p. i.e. 2426
EPIC 212553548 - maybe single dip d2447
EPIC 212557063 - single dip at 2392
EB candidates
EPIC 212520127 - period 0.394
EPIC 212525337 - period 0.302
EPIC 212530520 -
EPIC 212536771
EPIC 212537106 - 9.2d period
EPIC 212547858 - maybe HB
Posted
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by
ajamyajax
Re 212634172 from Hans Martin's list: another possible blended or high impact super-Earth candidate. Small M-dwarf star also, although duration time more of an estimate than usual with such a star: small, cool, and fairly dim at 14.83 KepMag.
s1=2387.44 p1=2.852 d1=0.065 (1.56 hours or less)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212634172 , 2MASS J13293374-0948364 , 12.353 , 11.659 , 11.412 , 0.694 , 0.247 , ('M8V', 0.082) , ('M2V', 0.5)
au min-max 0.03 0.035
stellar diameter in solar units min-max 0.435 0.57
stellar mass in solar units min-max 0.44 0.705
period in days min-max 2.845 2.861
duration in hours min-max 1.468 1.657From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212634172 202.3907 -9.8102 0.11 14.831 6
212633331 202.4016 -9.8306 83.11 16.916 6
212634254 202.4284 -9.8084 133.94 16.794 6
212634125 202.3510 -9.8112 140.82 13.898 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212634172,3769.00,0.30,0.32,11.412,74.400,-110.500,103.70
Posted
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by
ajamyajax
in response to zoo3hans's comment.
Thanks HM and I guess that is fairly flat, did you get any better lines in AKO from a slightly different period? These small blended-looking transits are obviously the most difficult to get as accurate as is possible. And 212634172 just above this post is in the same category.
Posted
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by
ajamyajax
Re 212568066 from Ivan's list and JKD's mention: yes these flat or ragged bottom EB transits are less common, but we've seen them before in K1. And fyi this image is from my new program that makes minimally-corrected K2 data files right out of the FITS files. I think it will be useful.
Also note Huber/NEA have this target as a giant or subgiant.
s1=2388.47 p1=7.115 d1=0.43 (10.32 hours)
s1=2392.0275 p2=7.115 d2=0.43 (10.32 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212568066 , 2MASS J13350013-1117052 , 12.156 , 11.617 , 11.542 , 0.539 , 0.075 , ('K3V', 0.81) , ('G4V', 0.99)
epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212568066,4946.00,7.26,0.92,11.542,5.200,2.600,2812.00
Posted
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by
Dolorous_Edd
Cool! something akin kepsff from PyKE?
Posted
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by
ajamyajax
I use a simpler method like PyKE's linear drift perhaps. That's really all that's needed to line things up enough to see the larger transits.
p.s. correction: my image y-label should haven been Flux (raw counts), used in that example.
Posted
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by
ajamyajax
Re 212530118 from Ivan's list: another small star and transit, another possible super-Earth planet candidate.. 0.70 R_sol estimate; maybe smaller.
s1=2397.15 p1=12.8312 d1=0.14 (3.36 hours or less)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212530118 , 2MASS J13313560-1205423 , 11.739 , 11.147 , 10.994 , 0.592 , 0.153 , ('K5V', 0.75) , ('K6V', 0.7)
au min-max 0.09 0.1
stellar diameter in solar units min-max 0.645 0.755
stellar mass in solar units min-max 0.59 0.81
period in days min-max 12.829 12.839
duration in hours min-max 3.266 3.453From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212530118 202.8983 -12.0951 0.04epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212530118,4175.00,0.45,0.51,10.994,-97.500,0.500,117.60
Posted
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by
zoo3hans
in response to ajamyajax's comment.
Dear Mark,
no, I did not try other periods in AKO.
Posted
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by
JKD
EPIC 212651213 - already mentioned and discussed on page 1 (zoo3hans) and page 10 (ajamyajax)
Based on my calculation I’m supporting the idea of 2 EBs with periods of ~5.1d and ~13.2d.
However, I’m not yet convinced. Maybe it’s a contamination / overlap of 2 nearby EBs
Posted
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by
zoo3hans
in response to ajamyajax's comment.
Another AKO image (boxcar filtered), this time for EPIC 212779596
P1=7.375 days
(for comparison: P1=7.3716 days)
P2=3.2255 days
(for comparison: P2=3.22475 days)
Posted
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by
zoo3hans
in response to JKD's comment.
I agree with EPIC 212285811 at BKJD 2387.325 being a good single transit candidate.
Posted
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by
ajebson
After a long absence, I've finally got my enthusiasm back .. hopefully will have updated my KepCurve tool with a bunch of K2 automation for downloading and browsing campaigns before the C7 release!
--- Tony
Posted
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by
ajamyajax
in response to ajebson's comment.
Welcome back, Tony!
Looks like C7 could arrive as early as Monday, but I believe they were later than scheduled for C6.. And by about a month as I remember.
http://keplerscience.arc.nasa.gov/K2/Fields.shtml
Posted
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by
ajamyajax
in response to zoo3hans's comment.
HM, thank you as always!
Looks like your 7.375 better than my quick chart at 7.3716. And your original estimate was 7.374 which was also more correct. 😃
Posted
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by
ajamyajax
in response to ajamyajax's comment.
Ivan and Hans Martin, just an update on my K2 corrective process: after batch testing with C6 looks like I can remove my flattening routines when using PDC_SAP data vs. the raw counts. Just slows it down for minimal gain with that data. The bad news is creating all files for a campaign looks really slow to run in my python code... Like maybe a week off and on at my part-time PC processing. Oh well. I can probably rewrite this program in C, but it might only be x percent faster. But I might test that to find out.
So,if they provide the MAST corrective data with the FITS files when C7 is available, it will be faster if you use that.
Edit: and I will probably run my batch process anyway -- however long it takes, and provide a set of files for Al to include in his program if he chooses to. Or for you and others to download if you choose to. The reason why is, although Andrew's corrective program is usually better than my minimal corrective routine (of course), and MAST is usually the same or better also -- they aren't always better. So it could come in handy to have another set of files to compare those results with. And I will post some examples of this another time.
Posted
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by
ajamyajax
Re 212839127 and a K2 conversion example for starters: this LC got me thinking about writing my own program because at times corrective software will remove transits and/or change the LC a bit. So a set of minimal conversions helps sort this out by comparison sometimes as you can see here.
s1=2384.698 p1=20.643 d1=0.14 (3.36 hours)
212839127 (MAST) starts at 2384.4834x, ends at 2463.35016x BJD
212839127 (Andrew's) starts at 2384.8308, ends at 2463.3502 BJD
212839127 (Mark's) starts at 2384.4630, ends at 2463.3706 BJD
212839127 (Aigrain's et al) starts at 2384.4834, ends at 2463.3706 BJD
Posted
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by
ajamyajax
Trying to catch up on a few more possible C6 planet candidates before C7 arrives...
Re 212644491 from Hans Martin's list: if this star is a 8.12 R_Sol giant as Huber/NEA indicate, the observed transit is probably a grazing binary eclipse. That would be a ~30.5Re radius estimate. But if a smaller subgiant around 1.6 R_sol -- which the approx blended duration estimate seems to indicate, this transit could be a high impact gas giant of Saturn size or larger.
s1=2386.42 p1=2.9946 d1=0.15 (3.6 hours or more)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212644491 , 2MASS J13121440-0934175 , 12.000 , 11.454 , 11.376 , 0.546 , 0.078 , ('K4V', 0.78) , ('G5V', 0.98)
au min-max 0.045 0.05
stellar diameter in solar units min-max 1.475 1.73
stellar mass in solar units min-max 1.35 1.85
period in days min-max 2.99 3.002
duration in hours min-max 3.501 3.697From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212644491 198.0600 -9.5715 0.12 13.469 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212644491,4940.00,8.12,0.91,11.376,-0.100,-3.100,2993.00
Posted
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by
ajamyajax
Re 212676585 from Hans Martin's list: only two sparse and blended data transit events here (not shown). If not glitches this one shows some signs of a bgeb. But this target also has a maybe more interesting visual neighbor (146.59 arcsecs) that is supergiant in radius at ~77.x R_sol. It is only 11.867 KepMag and is 7103 parsecs distant however. And the mass of 0.86 M_sol seems a bit low for a supergiant per Wiki anyway. The LC is smooth though like that of a large star.
s1=2397.44 p1=53.1 d1=0.2375 (5.7 hours +/-)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212676585 , 2MASS J13245457-0849236 , 12.926 , 12.510 , 12.418 , 0.416 , 0.092 , ('K1V', 0.86) , ('K0V', 0.89)
212677048 , 2MASS J13244500-0848466 , 9.692 , 8.906 , 8.707 , 0.786 , 0.199 , ('M9V', 0.065) , ('K9V', 0.6)Semi-Major Axis a (A.U.) = 0.262
Stellar diameter ratio = 0.79
Stellar mass ratio = 0.85
Period ~= 53.099 days
Duration ~= 5.7007 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212676585 201.2274 -8.8232 0.16 14.170 6
212677048 201.1875 -8.8130 146.59 11.867 6, UCAC2 28735576 -- Star on Simbad, Proper motions mas/yr : 1.9 -5.2epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212676585,5201.00,0.79,0.85,12.418,-11.400,-13.000,492.50
212677048,4089.00,77.88,0.86,8.707,1.900,-5.200,7103.00Posted
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by
ajamyajax
Re 212690867 from Hans Martin's list: V-shaped fit, but shallow in depth so could be a grazing small gas giant or a blended small star binary system. A range of stellar parameters might add to the latter case.
s1=2396.585 p1=25.872 d1=0.17 (4.08 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212690867 , 2MASS J13331543-0829043 , 12.865 , 12.308 , 12.061 , 0.557 , 0.247 , ('K4V', 0.78) , ('M2V', 0.5)
Semi-Major Axis a (A.U.) = 0.149
Stellar diameter ratio = 0.66
Stellar mass ratio = 0.6583
Period ~= 25.865 days
Duration ~= 4.0806 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212690867 203.3143 -8.4845 0.05 14.936 6
212691348 203.3218 -8.4735 47.81 16.319 6
212692145 203.2997 -8.4545 119.87 13.389 6
212690331 203.2823 -8.4984 124.39 14.216 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212690867,3598.00,0.29,0.31,12.061,-44.100,-20.900,108.40
Posted
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by
ajamyajax
Re 212691422 from Hans Martin's list: Huber/NEA have this target as F7V and 1.52 R_sol, but the transit duration suggests an even larger star. But that could also indicate a binary, perhaps a F7V and G1V pairing. There is also a possible faint secondary however, which suggests one star could be much larger. Of course if just a glitch and not a secondary, a subgiant star is possible and a gas giant planet candidate.
s1=2394.90 p1=48.32 d1=0.5 (12.0 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212691422 , 2MASS J13214951-0828181 , 10.950 , 10.686 , 10.617 , 0.264 , 0.069 , ('G0V', 1.09) , ('G2V', 1.0)
au min-max 0.34 0.39
stellar diameter in solar units min-max 2.355 2.74
stellar mass in solar units min-max 2.245 3.39
period in days min-max 48.313 48.328
duration in hours min-max 11.903 12.091From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212691422 200.4563 -8.4717 0.15 11.923 6
212691203 200.4362 -8.4769 74.09 14.870 6
212690491 200.4497 -8.4941 83.96 13.768 6
212692472 200.4246 -8.4457 146.79 15.017 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212691422,6228.00,1.52,1.22,10.617,-11.600,0.000,477.90
Posted
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by
ajamyajax
Re 212735333 from Hans Martin's list: and a nice candidate from Andrew's data, too. The fit looks very good as perhaps a slightly blended mini gas giant around a Sun-size star. The stellar neighborhood is fairly busy, but maybe just some light blending from there.
s1=2385.18 p1=8.358 d1=0.15 (3.6 hours or more)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212735333 , 2MASS J13293447-0722262 , 10.881 , 10.558 , 10.479 , 0.323 , 0.079 , ('G5V', 0.98) , ('G6V', 0.97)
au min-max 0.07 0.09
stellar diameter in solar units min-max 0.825 1.12
stellar mass in solar units min-max 0.655 1.395
period in days min-max 8.349 8.365
duration in hours min-max 3.506 3.698Semi-Major Axis a (A.U.) = 0.08
Stellar diameter ratio = 1.04
Stellar mass ratio = 0.99
Period ~= 8.353 days
Duration ~= 3.8505 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212735333 202.3937 -7.3740 0.11 11.977 6
212734361 202.4123 -7.3984 110.18 13.103 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212735333,5819.00,1.04,0.99,10.479,-45.900,2.500,291.60
Posted
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by
ajamyajax
Re 212362217 from Ivan's list: looks like a slightly eccentric bgeb. Although curiously, there is a different eccentric eb only 77.25 arcsecs away. And that one could be authentic by its depth.
s1=2385.54 p1=4.875 d1=0.10 (2.4 hours)
s2=2388.30 p2=4.875 d2=0.10 (2.4 hours)Credit, ephemeris from JKD:
EB EPIC 212362957, S1 at 2384.91 BKJD, S2 at 2389.44 BKJD, P = 12.5 dEPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212362217 , 2MASS J13230472-1549070 , 11.626 , 11.208 , 11.054 , 0.418 , 0.154 , ('K1V', 0.86) , ('K6V', 0.7)
212361724 , 2MASS J13230508-1549511 , 12.682 , 12.058 , 11.844 , 0.624 , 0.214 , ('K7V', 0.64) , ('M0V', 0.58)
212362957 , 2MASS J13230716-1547580 , 12.697 , 12.362 , 12.281 , 0.335 , 0.081 , ('G6V', 0.97) , ('G6V', 0.97)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212362217 200.7697 -15.8186 0.12 13.170 6
212361724 200.7712 -15.8309 44.47 15.306 6
212362957 200.7798 -15.7995 77.25 13.937 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212362217,5239.00,0.85,0.89,11.054,15.500,-22.400,303.10
212361724,3713.00,0.32,0.34,11.844,17.800,-58.100,116.70
212362957,5808.00,1.12,0.98,12.281,4.500,3.400,709.80From VSX:
Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
4.62 Variable ASAS J132300-1544.6 -- 13 23 00.02 -15 44 38.1 Vir MISC 89.552238 9.9 (0.31) V
Posted
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by
ajamyajax
Re 212833814 from Hans Martin's list: very blended, but maybe a shorter 13.9x period transit compared with the 55.6x period originally observed. And the stellar estimates vary also, so more of a guess here as to what this could be. And a fit not shown.
s1=2403.15 p1=13.915 d1=0.23 (5.52 hours or more)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212833814 , 2MASS J13410821-0426144 , 9.698 , 9.367 , 9.335 , 0.331 , 0.032 , ('G6V', 0.97) , ('A1V', 2.2)
Semi-Major Axis a (A.U.) = 0.111
Stellar diameter ratio = 1.235
Stellar mass ratio = 0.93
Period ~= 13.912 days
Duration ~= 5.5341 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212833814 205.2842 -4.4374 0.16 10.724 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212833814,5833.00,0.98,0.93,9.335,-80.500,-41.100,157.40Listed as BD-03 3511 -- Star on Simbad
Posted
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by
ajamyajax
Re 212357329 from Ivan's list: also not shown but could be another eccentric bgeb or a periodic variable since the period intervals seem to vary a bit. But variable F-type star data makes determining this more difficult.
s1=2386.222 p1=2.223 d1=0.12 (2.88 hours)
s2=2384.734 p2=2.223 d2=0.12 (2.88 hours)EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212357329 , 2MASS J13350146-1556297 , 9.902 , 9.735 , 9.715 , 0.167 , 0.02 , ('F4V', 1.37) , ('B9V', 2.8)
212358354 , 2MASS J13350478-1554591 , 10.358 , 9.763 , 9.640 , 0.595 , 0.123 , ('K5V', 0.75) , ('K3V', 0.81)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212357329 203.7562 -15.9416 0.17 10.605 6
212358354 203.7696 -15.9161 102.99 11.842 6, TYC 6121-88-1 -- Star per Simbad, 13 35 04.711 -15 54 57.85
212358837 203.7543 -15.9043 134.52 15.995 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212357329,6307.00,2.12,1.25,9.715,-4.800,-5.100,407.30
212358354,4544.00,13.13,0.97,9.640,-30.100,16.300,1987.00Listed as BD-15 3699 -- Star on Simbad
Posted
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by
ajamyajax
Re 212443457 from Ivan's list: as already mentioned this system does show signs of a being a binary. The K-dwarf radii estimates are much smaller than one a duration estimate suggests, which supports this. So my guess here is a possible eb that is diluted so it appears truncated in the already sparse K2 data.
s1=2400.655 p1=24.487 d1=0.33 (7.92 hours +/-)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212443457 , 2MASS J13573816-1356335 , 11.407 , 10.845 , 10.693 , 0.562 , 0.152 , ('K6V', 0.7) , ('K6V', 0.7)
au min-max 0.185 0.2
stellar diameter in solar units min-max 1.665 1.84
stellar mass in solar units min-max 1.41 1.78
period in days min-max 24.476 24.486
duration in hours min-max 7.821 8.018From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212443457 209.4090 -13.9427 0.14 13.116 6
212444030 209.4397 -13.9306 115.65 12.942 6
212442455 209.3742 -13.9645 144.84 14.182 6epic_number,k2_teff,k2_rad,k2_mass,k2_kmag,k2_pmra,k2_pmdec,k2_dist
212443457,4804.00,0.74,0.81,10.693,-16.400,-13.100,207.10
Posted
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by
ajebson
On spectral type, and other stellar properties, I'm working on code to constrain them better using all the available EPIC data. In particular, many stars have BV, GRI and JHK photometry so I can derived parameters from a wider set of data, assuming main sequence.
I'm also hoping to add a bunch of giant versus dwarf tests, from both photometry and from proper motion and parallax which constrain distance (and hence absolute magnitude). I'm still struggling to create a decent model for evolved stars ...
--- Tony
Posted
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by
Dolorous_Edd
EPIC 212542155 (from page 15) at BKJD 2389.325 looks like reasonably good single transit candidate ~3-4 Re
Aslo there is a star nearby (within ~5"), visible in DSS
BTW Mark what do you think about EPIC 212460519? possible small planet candidate, I think
Posted
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by
ajamyajax
in response to Dolorous_Edd's comment.
Re 212460519 from Ivan's list: agree Ivan, looks like a very respectable planet candidate. I get a mini gas giant with a 0.70 R_sol K-dwarf. But both could be a smaller if the Teff value is correct. Using the much smaller Huber/NEA radius of 0.41 R_sol yields a 1.28Re PC or so. But the KepMag is 12.445.. The star is relatively close however based on the distance and proper motion. Also, I looked at the nearby EPICs listed below, but didn't see any sign of transit contamination. So a nice find and hope it gets a closer look.
s1=2398.185 p1=7.3862 d1=0.115 (2.76 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212460519 , 2MASS J13341115-1334370 , 10.508 , 9.917 , 9.712 , 0.591 , 0.205 , ('K5V', 0.75) , ('M1V', 0.52)
au min-max 0.065 0.07
stellar diameter in solar units min-max 0.66 0.76
stellar mass in solar units min-max 0.67 0.84
period in days min-max 7.381 7.395
duration in hours min-max 2.664 2.855Semi-Major Axis a (A.U.) = 0.067
Stellar diameter ratio = 0.7
Stellar mass ratio = 0.723
Period ~= 7.383 days
Duration ~= 2.7619 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212460519 203.5465 -13.5769 0.18 12.445 6
212460051 203.5705 -13.5873 91.78 15.295 6
212461908 203.5525 -13.5466 111.15 14.836 6
212460968 203.5133 -13.5675 121.18 11.386 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212460519,3924.00,0.41,0.45,12.445,38.200,-2.800,68.42
Posted
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by
ajamyajax
in response to ajebson's comment.
Ambitiously awesome! I look forward to reading your results.
p.s. now if we could only get Shellface to return and post his amazing insights also, we would really be cooking.. 😉
Posted
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by
Dolorous_Edd
EPIC 212691422 from Hans Martin's list and ajamyajax mention
well, if it is a binary it doesn't look to be a visual one
CFHT R-band
Posted
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by
ajebson
in response to Shellface's comment.
As Shellface said 2 months ago, E(B-V) data can be found here
As for how this should be treated for K2 targets, which are nearer, I think the value for a given star should be scaled by
[1 − exp(−|d sin b|/h)]Where d is the distance to the star (in parsecs), b is the galactic latitude and h is the scale height of the dust (in parsecs; assume 125pc as per Hernandez & Bonifacio
--- Tony
Posted
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by
ajamyajax
in response to ajebson's comment.
Alright, and SF's note and earlier comments were noticed. Also FWIW I hope to include reddening into what I do also at some point, but just haven't gotten to it yet.
Posted
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by
ajamyajax
Re 212480208 from Ivan's list: one transit observed, but could be another nice MPC with at least two super-Earths and a K-dwarf at 0.81 R_sol using the Huber/NEA value. Their Teff seems kind of hot for a star this size though, and the durations here could be greater as well supporting a somewhat larger star and PCs.. Also noting this is another relatively close target per the distance and the proper motion. And only one fit shown because the second transit looks fairly well blended. But not surprising if these really are small planets. Also a near 1:2 orbital ratio could help the PC cause here.
s1=2391.782 p1=10.098 d1=0.14125 (3.39 hours)
s2=2395.70 p2=21.58 d2=0.1783 (4.38 hours)EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212480208 , 2MASS J13412725-1309392 , 9.834 , 9.447 , 9.410 , 0.387 , 0.037 , ('K0V', 0.89) , ('A3V', 2.0)
Semi-Major Axis a (A.U.) = 0.086
Stellar diameter ratio = 0.81
Stellar mass ratio = 0.82
Period ~= 10.102 days
Duration ~= 3.4022 hoursSemi-Major Axis a (A.U.) = 0.142
Stellar diameter ratio = 0.81
Stellar mass ratio = 0.82
Period ~= 21.583 days
Duration ~= 4.3819 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212480208 205.3635 -13.1609 0.02 10.892 6
212481465 205.3527 -13.1348 101.28 12.602 6
212479157 205.3404 -13.1842 116.58 13.056 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212480208,5579.00,0.81,0.82,10.892,-121.200,13.100,129.30Listed as TYC 5552-1202-1 -- Star on Simbad
Posted
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by
ajamyajax
Just a few more closer looks while we wait for C7...
Re 212639319 from Hans Martin's list: sparse data that looks rather stellar here. The best case would be a high impact smaller gas giant perhaps with a higher mass to radius star. The blended duration seems short for the teff and stellar mass values though, so could be a blended binary if not systematics.
s1=2389.43 p1=13.846 d1=0.11 (2.64 hours +/-)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212639319 , 2MASS J13181875-0941307 , 11.130 , 10.727 , 10.647 , 0.403 , 0.08 , ('K0V', 0.89) , ('G6V', 0.97)
Semi-Major Axis a (A.U.) = 0.112
Stellar diameter ratio = 0.6
Stellar mass ratio = 0.977
Period ~= 13.851 days
Duration ~= 2.6409 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212639319 199.5781 -9.6919 0.20 12.471 6
212639932 199.5866 -9.6777 59.16 16.316 6
212640429 199.5858 -9.6668 94.22 11.194 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212639319,5642.00,1.13,1.03,12.471,-29.900,-2.100,345.70
Posted
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by
ajamyajax
Re 212648083 from Hans Martin's list: a chance for a mini gas giant here using the 1.01 R_sol values from Huber/NEA, but the transit depths do vary and could be stellar contamination.
s1=2396.78 p1=20.588 d1=0.16 (5.12 hours or less)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212648083 , 2MASS J13173569-0929205 , 12.060 , 11.692 , 11.563 , 0.368 , 0.129 , ('G9V', 0.91) , ('K4V', 0.78)
Semi-Major Axis a (A.U.) = 0.145
Stellar diameter ratio = 1.01
Stellar mass ratio = 0.95
Period ~= 20.584 days
Duration ~= 5.1208 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212648083 199.3988 -9.4890 0.14 13.170 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212648083,5752.00,1.01,0.95,13.170,-21.400,-2.300,484.40
Posted
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by
ajamyajax
Re 212657240 from Hans Martin's list revisited: this transit does not appear much at all in Andrew's more corrected data, so probably not a good candidate. Suggest we look at this one again in the K2 corrected data from Aigrain, et al. when available.
s1=2397.4 p1=19.9 d1=0.18 (4.32 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212657240 , 2MASS J13142811-0916389 , 10.179 , 9.858 , 9.747 , 0.321 , 0.111 , ('G5V', 0.98) , ('K4V', 0.78)
au min-max 0.13 0.14
stellar diameter in solar units min-max 0.775 0.87
stellar mass in solar units min-max 0.74 0.925
period in days min-max 19.893 19.902
duration in hours min-max 4.223 4.414From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212657240 198.6171 -9.2775 0.11 11.294 6Listed as TYC 5537-574-1 -- Star on Simbad, Proper motions mas/yr : 0.7 12.7
epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212657240,5572.00,1.06,1.00,11.294,0.700,12.700,210.00Posted
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by
ajamyajax
Re 212689874 from Hans Martin's revisited: this candidate system looks better since HM added a second possible transit here which fits ok for only two transits. The durations are too short for the stellar estimates again, but both could be highly blended. And at least they are consistent, so these could be two Neptune-class planet candidates or better.
s1=2392.045 p1=15.853 d1=0.20 (4.8 hours or more)
s2=2410.02 p2=28.445 d2=0.20 (4.8 hours or more)EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212689874 , 2MASS J13191957-0830339 , 11.248 , 10.904 , 10.876 , 0.344 , 0.028 , ('G9V', 0.91) , ('A0V', 2.3)
au min-max 0.13 0.15
stellar diameter in solar units min-max 1.305 1.555
stellar mass in solar units min-max 1.165 1.79
period in days min-max 15.845 15.862
duration in hours min-max 5.664 5.854Just theoretical durations using Huber/NEA stellar values:
Semi-Major Axis a (A.U.) = 0.125
Stellar diameter ratio = 1.29
Stellar mass ratio = 1.04
Period ~= 15.847 days
Duration ~= 5.8163 hoursSemi-Major Axis a (A.U.) = 0.185
Stellar diameter ratio = 1.29
Stellar mass ratio = 1.04
Period ~= 28.453 days
Duration ~= 7.0692 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212689874 199.8315 -8.5095 0.08 12.330 6
212688614 199.8216 -8.5390 111.98 14.211 6
212691393 199.8311 -8.4727 132.42 15.878 6
212691080 199.8563 -8.4800 138.03 14.889 6
212687922 199.8080 -8.5561 187.55 14.871 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212689874,5903.00,1.29,1.04,12.330,0.100,-10.100,423.80
Posted
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by
zoo3hans
in response to ajamyajax's comment.
EPIC 212480208
I tried AKO for this one, but only the 10.099 days transit looks convincing in AKO, the 21.58 days planet does not stand out from the noise unfortunatley (but I think it is real nevertheless).
P=10.099 days
Posted
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by
ajamyajax
Re 212688920 from Hans Martin's list: yes, looks stellar as HM already mentioned. Huber/NEA have this star as a 2.36 R_sol subgiant, so even more so transit depth-wise as shown. With a radius of 0.78 R_Sol, an estimated object size would still be ~18.1Re. Also noting a fairly distant target compared to others here.
s1=2387.233 p1=62.837 d1=0.135 (3.24 hours +/-)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212688920 , 2MASS J13320325-0831532 , 12.470 , 12.028 , 11.969 , 0.442 , 0.059 , ('K3V', 0.81) , ('F6V', 1.25)
From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212688920 203.0136 -8.5315 0.15 13.886 6
212687324 203.0205 -8.5709 144.05 14.425 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212688920,4976.00,2.36,0.97,13.886,-6.100,-2.800,1080.00
Posted
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by
ajamyajax
Re 212691727 from Hans Martin's list: also stellar with a deep U-shape and a secondary as HM mentioned. Well, except for middle transit event in the image shown which is a glitch I presume. But maybe the companion is about a quarter of this star's size (~30.xRe/109 Earths wide for the Sun times 1.14 R_sol for this star). And if transiting at the equator which the U-shape could indicate.
s1=2386.521 p1=12.862 d1=0.22 (5.28 hours)
s2=2392.982 p2=12.862 d2=0.20 (4.80 hours)EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212691727 , 2MASS J13202865-0827522 , 11.623 , 11.285 , 11.207 , 0.338 , 0.078 , ('G6V', 0.97) , ('G5V', 0.98)
From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212691727 200.1194 -8.4645 0.09 12.657 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212691727,5901.00,1.14,0.97,12.657,-18.100,16.600,448.10
Posted
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by
ajamyajax
Re 212694013 from Hans Martin's list: this target is relatively distant at 1660 parsecs and is considered a giant or subgiant by Huber/NEA at 5.04 R_sol. Using those values suggests the companion is stellar. About 0.95 R_sol would put a companion in the Saturn-class, but without a transit repeat it is more difficult to make the case for a smaller star here. Although the cooler teff value helps and the star could be ~0.83 M_sol if that is accurate at distance. So if anything to add to this, feel free to post.
s1=2409.17 p1=83.793? d1=1.7 (40.8 hours +/-)
s2=2441.81 p2=32.64*2? d2=0.5 (12 hours) --> secondary? possible glitch area though...EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212694013 , 2MASS J13191544-0824280 , 11.835 , 11.320 , 11.253 , 0.515 , 0.067 , ('K3V', 0.81) , ('G0V', 1.09)
Semi-Major Axis a (A.U.) = 0.368
Stellar diameter ratio = 5.04
Stellar mass ratio = 0.95
Period ~= 83.793 days
Duration ~= 40.8011 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212694013 199.8144 -8.4078 0.17 13.364 6
212692447 199.8202 -8.4465 140.75 12.760 6
212695603 199.8020 -8.3682 149.31 14.566 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212694013,4913.00,5.04,0.95,13.364,-11.500,-4.100,1660.00
Posted
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by
JKD
EPIC 212652663 - EB might have a PC
The EB is already listed by zoo3hans on page 1
EPIC 212652663 looks like a slightly eccentric binary system which might have a PC in the outer orbit
Signals at 2407.387 BKJD and 2414.171 BKJD
Posted
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JKD
EPIC 212656205 - an eccentric EB
S1 at 2389.489 BKJD,
P =72.789 d
Duration ~6.374 hrs
Depth =61083 ppm
S2 at 2411.514 BKJD
P = ?
Duration ~5.882 hrs
Depth ~42677 ppm
Posted
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by
JKD
EPIC 212656373 - maybe a long period PC
S at 2387.620 BKJD
P =?
Duration ~42.662 hrs
Depth =3662 ppm
Posted
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by
ajamyajax
in response to JKD's comment.
Agree, that does look like an eccentric binary. And hope you continue to find interesting periodic transits in C7. 😃
Posted
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ajamyajax
Re 212698055 from Hans Martin's list: only two transit events but using the NEA value of 1.62 R_sol, a 2.7Re planet candidate seems possible here. If these are not glitches of course.
s1=2392.50 p1=38.24 d1=0.55 (13.2 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212698055 , 2MASS J13432874-0818339 , 9.651 , 9.429 , 9.396 , 0.222 , 0.033 , ('F7V', 1.21) , ('A1V', 2.2)
Semi-Major Axis a (A.U.) = 0.233
Stellar diameter ratio = 2.26
Stellar mass ratio = 1.154
Period ~= 38.24 days
Duration ~= 13.2 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212698055 205.8698 -8.3094 0.19 10.496 6
212697868 205.8605 -8.3138 36.53 16.892 6
212697991 205.8934 -8.3108 84.39 13.991 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212698055,6258.00,1.62,1.15,10.496,13.400,6.800,276.90Listed as BD-07 3680 -- Star on Simbad, Proper motions mas/yr : 13.4 6.8
Posted
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ajamyajax
Re 212772113 from Hans Martin's list: very sparse data that appears blended which probably shortens the duration and depth to mini gas giant size. And assuming a 0.63 R_sol star. But this still looks like a blended binary.
s1=2390.795 p1=8.955 d1=0.07 (1.68 hours or more)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212772113 , 2MASS J13325329-0621244 , 12.286 , 11.797 , 11.701 , 0.489 , 0.096 , ('K2V', 0.85) , ('K1V', 0.86)
212772014 , 2MASS J13324789-0621352 , 12.439 , 12.239 , 12.171 , 0.2 , 0.068 , ('F6V', 1.25) , ('G2V', 1.0)
212771460 , 2MASS J13324890-0622274 , 10.624 , 10.359 , 10.286 , 0.265 , 0.073 , ('G0V', 1.09) , ('G2V', 1.0)au min-max 0.07 0.07
stellar diameter in solar units min-max 0.56 0.6
stellar mass in solar units min-max 0.57 0.57
period in days min-max 8.96 8.96
duration in hours min-max 2.551 2.733From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212772113 203.2220 -6.3569 0.18 13.747 6
212772014 203.1995 -6.3598 81.25 13.317 6
212771460 203.2037 -6.3744 91.02 11.749 6, UCAC2 29652972 -- Star on Simbad, Proper motions mas/yr : -16.1 -3.1
212773156 203.2147 -6.3271 110.26 16.000 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212772113,5018.00,0.63,0.68,13.747,-63.400,-24.400,283.30
212772014,6540.00,1.22,0.84,13.317,-22.000,-4.800,743.50
212771460,5817.00,1.03,1.01,11.749,-16.100,-3.100,252.20From VSX:
Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
1.84 Variable HP Vir 000-BFP-592 13 32 51.54 -06 19 37.5 Vir RRAB 0.528001 15.4 - 16.4 CV
Posted
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ajamyajax
Re 212422536 from Ivan's list: one or more blended super-Earth planet candidates seem possible in this small dwarf system. Just one fitted as shown.
s1=2397.465 p1=15.715 d1=0.131 (3.14 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212422536 , 2MASS J13212583-1424233 , 12.389 , 11.804 , 11.689 , 0.585 , 0.115 , ('K5V', 0.75) , ('K3V', 0.81)
Semi-Major Axis a (A.U.) = 0.107
Stellar diameter ratio = 0.6
Stellar mass ratio = 0.66
Period ~= 15.714 days
Duration ~= 3.1391 hoursSemi-Major Axis a (A.U.) = 0.127
Stellar diameter ratio = 0.6
Stellar mass ratio = 0.66
Period ~= 20.3 days
Duration ~= 3.4189 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212422536 200.3576 -14.4065 0.18 14.074 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212422536,4506.00,0.60,0.66,14.074,-52.100,1.300,240.70
Posted
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ajamyajax
Re 212705192 from Hans Martin's list: even with its V-shaped transit, a possible high impact hot gas giant here with consistent stellar parameters around 1.08 R_sol (shown). Alternating fit tests from three data sources -- Andrew's (shown), MAST, and my minimally corrected data, did not show any obvious secondary transit. I think it also helps that the transit period is not tied to the regular variable flux cycle.
s1=2386.617 p1=2.2685 d1=0.105 (2.52 hours +/-)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212705192 , 2MASS J13302530-0807489 , 10.709 , 10.357 , 10.280 , 0.352 , 0.077 , ('G8V', 0.94) , ('G6V', 0.97)
au min-max 0.03 0.035
stellar diameter in solar units min-max 0.9 1.14
stellar mass in solar units min-max 0.695 1.12
period in days min-max 2.26 2.277
duration in hours min-max 2.422 2.62From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212705192 202.6054 -8.1303 0.18 11.728 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212705192,5835.00,1.08,0.97,11.728,-45.400,5.000,281.20Listed as TYC 5545-125-1 -- Star on Simbad
Posted
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ajamyajax
Re 212440430 from Ivan's list: perhaps another blended transit that could be a mini gas giant planet candidate. Worth noting is the MAST data had other transit-like signals, but this the only one that appeared periodic that I could see.
s1=2395.175 p1=19.982 d1=0.22 (5.28 hours or less)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212440430 , 2MASS J13360854-1400331 , 12.191 , 11.867 , 11.776 , 0.324 , 0.091 , ('G5V', 0.98) , ('K0V', 0.89)
And a theoretical duration using Huber/NEA stellar values:
Semi-Major Axis a (A.U.) = 0.143
Stellar diameter ratio = 1.07
Stellar mass ratio = 0.97
Period ~= 19.991 days
Duration ~= 5.3352 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212440430 204.0356 -14.0092 0.06 13.267 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212440430,5849.00,1.07,0.97,13.267,-19.500,-1.300,560.20
Posted
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ajamyajax
Re 212757601 from Hans Martin's list: well this transit could work as an inflated hot Jupiter with a larger star estimate. The teff and the colors support a 0.86-0.91 M_sol range though, while the Huber/NEA values are even smaller. So with a wide range like this a binary also seems possible.
s1=2385.015 p1=1.018 d1=0.091 (2.18 hours)
EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212757601 , 2MASS J13523711-0646097 , 15.349 , 14.861 , 14.774 , 0.488 , 0.087 , ('K2V', 0.85) , ('G9V', 0.91)
212756709 , 2MASS J13523160-0647356 , 10.094 , 9.723 , 9.636 , 0.371 , 0.087 , ('G9V', 0.91) , ('G9V', 0.91)au min-max 0.02 0.02
stellar diameter in solar units min-max 1.14 1.27
stellar mass in solar units min-max 1.01 1.05
period in days min-max 1.008 1.028
duration in hours min-max 2.08 2.279Semi-Major Axis a (A.U.) = 0.02
Stellar diameter ratio = 1.2
Stellar mass ratio = 1.02
Period ~= 1.023 days
Duration ~= 2.1844 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212757601 208.1546 -6.7694 0.17 16.825 6
212756709 208.1317 -6.7932 118.65 11.272 6, listed as TYC 4974-101-1 -- Star on Simbad
212756761 208.1858 -6.7915 136.92 17.766 6epic_number,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212757601,5169.00,0.64,0.67,16.825,-10.000,-1.000,1184.00
212756709,5494.00,8.28,0.89,11.272,-8.000,1.400,1353.00
Posted
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by
JKD
EPIC 212672300already listed and discussed by zoo3hans (page 1) and ajamyajax (page 9) likely a PC with
s at 2410.00 BKJD
p =39.730 d
Duration ~8.83 hrs
Depth ~1000 ppm
Posted
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by
JKD
EPIC 212674962 may be a super novae
S1 at 2407.77 BKJD, Duration ~1.96 hrs, Depth increase ~plus (+) 2026200 ppm (~200%)
Followed by a second signal S2 at 2407.89 BKJD with an iDepth increase of ~plus (+) 40% (maybe a shock wave)
Posted
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by
zoo3hans
in response to JKD's comment.
No, EPIC 212674962 cannot be a supernova. Supernova outbreaks last for weeks or months! Even for a nova I think it's too short. Maybe it's a big flare. I think we have other flare activities as well.
Posted
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by
JKD
in response to zoo3hans's comment.
I really appreciate your response !
Nevertheless, I do not believe it is just a Flare with +200% intensity increase
Posted
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by
ajamyajax
212674962 is small star (0.29 R_sol) that have been known to produce megaflares.
You can watch a SPACE dot COM video about one here, and it's about the same size too:
https://talk.planethunters.org/#/boards/BPH0000006/discussions/DPH00000wq
And megaflare star DG CVn is in VSX:
http://www.aavso.org/vsx/index.php?view=detail.top&oid=5147The 2MASS value is different, just in case you were wondering (J133146.62+2916367)
epic_number,tm_name,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212674962,2MASS J13514256-0851441,3611.00,0.29,0.30,14.823,37.800,-28.100,99.06Posted
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by
JKD
in response to ajamyajax's comment.
Okay.
Thanks a lot to you and HM for supporting
Best regards
Posted
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by
JKD
EPIC 212685467 - maybe a PC with no repeat during the monitored period (couldn’t find an earlier comment in C6 K2)
Signal at 2409.656 BKJD
Duration ~6.86 hrs
Depth ~8900 ppm (~0.9%)
Posted
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by
ajamyajax
in response to JKD's comment.
Re 212685467 from Hans Martin's list and JKD's mention: indeed, one V-shaped signal at PC depth but unfortunately there isn't a 2MASS value or stellar information (radius, mass, colors) for this target.
Update: we can make the 2MASS value from the RA/Dec of 13 51 51.743, -08 36 52.48 which equals J135151743-08365248. However stellar mass and radius would be a total guess without color values or more research. The decimal version of RA/Dec (207.9656067, -8.6145773) did show a possible red dwarf or red giant on Aladin Lite, but that's about it. VSX and Simbad didn't show anything listed nearby.
Posted
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ajamyajax
Also just noting some duplicate 2MASS and color values in the C6 data:
212316561 , 2MASS J13433054-1702375 , 7.937 , 7.637 , 7.546 , 0.3 , 0.091 , 'G3V'
212316566 , 2MASS J13433054-1702375 , 7.937 , 7.637 , 7.546 , 0.3 , 0.091 , 'G3V'212329328 , 2MASS J13513022-1641058 , 9.510 , 8.868 , 8.733 , 0.642 , 0.135 , 'M7V'
212329330 , 2MASS J13513022-1641058 , 9.510 , 8.868 , 8.733 , 0.642 , 0.135 , 'M7V'212451273 , 2MASS J13424519-1346301 , 11.646 , 11.124 , 11.022 , 0.522 , 0.102 , 'K3V'
212451296 , 2MASS J13424519-1346301 , 11.646 , 11.124 , 11.022 , 0.522 , 0.102 , 'K3V'212472353 , 2MASS J13244753-1319376 , 9.369 , 9.117 , 8.999 , 0.252 , 0.118 , 'F9V'
212472366 , 2MASS J13244753-1319376 , 9.369 , 9.117 , 8.999 , 0.252 , 0.118 , 'F9V'212685623 , 2MASS J13335111-0836389 , 10.237 , 9.729 , 9.630 , 0.508 , 0.099 , 'K3V'
212685636 , 2MASS J13335111-0836389 , 10.237 , 9.729 , 9.630 , 0.508 , 0.099 , 'K3V'212716253 , 2MASS J14005766-0751311 , 9.434 , 9.190 , 9.128 , 0.244 , 0.062 , 'F9V'
212716268 , 2MASS J14005766-0751311 , 9.434 , 9.190 , 9.128 , 0.244 , 0.062 , 'F9V'212794402 , 2MASS J13333378-0542336 , 11.245 , 10.916 , 10.842 , 0.329 , 0.074 , 'G6V'
212794413 , 2MASS J13333378-0542336 , 11.245 , 10.916 , 10.842 , 0.329 , 0.074 , 'G6V'Posted
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by
ajamyajax
Re 212354976 from Ivan's list: well, this close contact binary isn't even visible in the other corrective data.. My guess is they may be treating the lower range data as outliers. If so, there could be more light curves like this. So I will create a set of minimally corrected C7 data anyway. Already tested a few LC's in Al's program and they worked just fine. But anybody who can write a program that reads the FITS files can do this. Does take a little work though.
Note this target has a visual neighbor in 212355006 that is only 8.53 arcsecs apart. Both light curves look similar at a glance in my MC data. 212354976 might be a tad deeper. So could make for a good contamination study sometime. And could be a double star system based on the proper motions.
s1=2384.549 p1=0.25512 d1=0.087 (2.088 hours +/-)
s2=2384.678 p2=0.25512 d2=0.087 (2.088 hours +/-)EPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212354976 , 2MASS J13365012-1600006 , 11.389 , 11.046 , 10.946 , 0.343 , 0.1 , ('G9V', 0.91) , ('K3V', 0.81)
212355006 , 2MASS J13365067-1559581 , 11.172 , 10.727 , 10.623 , 0.445 , 0.104 , K , ('K3V', 0.81) , ('K2V', 0.85)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212354976 204.2089 -16.0002 0.19 12.231 6
212355006 204.2112 -15.9995 8.53 12.565 6
212354892 204.1953 -16.0026 47.67 18.444 6
212354289 204.1740 -16.0182 136.87 14.702 6epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
212354976,2MASS J13365012-1600006,204.208851,-16.000221,5572.00,0.94,0.99,12.231,11.200,-24.100,312.20
212355006,2MASS J13365067-1559581,204.211192,-15.999507,5199.00,1.73,0.90,12.565,11.200,-20.200,472.70
212354892,2MASS J13364686-1600094,204.195267,-16.002630,3989.00,0.40,0.47,18.444,,,679.60
212354289,2MASS J13364175-1601055,204.173996,-16.018211,4918.00,5.81,0.92,14.702,-4.600,-1.000,3937.00From VSX:
Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
0.00 Variable ASAS J133650-1560.0 -- 13 36 50.12 -16 00 00.8 Vir ESD|EC 0.255118 12.11 (0.29) V
http://www.aavso.org/vsx/index.php?view=detail.top&oid=96721
Posted
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by
JKD
EPIC 212692941 - already mentioned by zoo3hans on page 12 as a possible EB
Nice Signal at 2400.89 BKJD, Duration ~3.92 hrs, Depth ~7% in a turbulent LC with some other sharp signals
Posted
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by
ajamyajax
in response to JKD's comment.
JDK, forgot to mention this data file seems corrupted in some way. Not your fault of course, but can't do much with it. Maybe somebody else can later sometime.
Posted
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by
ajebson
EPIC212521166 b: a Neptune-mass planet with Earth-like density
Posted
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by
ajamyajax
in response to ajebson's comment.
Whoa, one planet and nearly thirty astronomers... Now, that's the way to do it! 😃
Posted
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by
ajebson
Well, it is at least three teams: original transit analysis + followup at EULER + HARPS RV measurements 😃
Posted
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by
zoo3hans
in response to ajebson's comment.
Well, on one hand it's nice to see this candidate being confirmed, on the other hand I'm a bit frustrated how we seem being ignored by the Professional Astronomers. Here at PH we had commented on this planet:
Page_4 - Dolorous_Edd - EPIC 212521166 - period ~13.86
Page_4 - me - EPIC 212521166 looks fine, P=13.867 days, starting at BKJD 2386.88, depth 0.00135, duration 4 hours, U-shaped.
Page_7 - ajamyajax - 212521166 from Ivan's list and Hans Martin's mention: this one does looks like a good mini gas giant PC, perhaps with some limb darkening on the star. Although the transit data is a bit thin. 0.82x R_sol stellar estimate. And a good deal of proper motion per Simbad, apparently suggesting this star is closer than others we observe.
Posted
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by
ajamyajax
in response to zoo3hans's comment.
Re 212521166 credit: trying to be objective, I think they might say 'we were here first' based on the proposal titles attached to this target. But it's all good in my view. There is always something new to find in the light curves others didn't expect, or something interesting to point out that might get closer study by our friends.
Summary of K2 Program GO6029
Title: Looking for Very Short Period Planets with the K2 Mission
PI: Jackson, Brian K (Boise State University)
CoIs: Adams, Elisabeth Rose; Endl, Michael
http://keplerscience.arc.nasa.gov/data/k2-programs/GO6029.txtSummary of K2 Program GO6030
Title: The Masses and Prevalence of Small Planets with K2 - Cycle 2
PI: Howard, Andrew William (University of Hawaii)
CoIs: Petigura, Erik; Sanchis Ojeda, Roberto; Crossfield, Ian JM; Stassun, Keivan Guadalupe; Winn, Joshua N.; Pepper, Joshua; Paegert, Martin
http://keplerscience.arc.nasa.gov/data/k2-programs/GO6030.txtSummary of K2 Program GO6032
Title: Galactic Archaeology on a grand scale
PI: Stello, Dennis (University of Sydney)
CoIs: Sharma, Sanjib; Buzasi, Derek L; Freeman, Kenneth; Mathur, Savita; Miglio, Andrea; Pinsonneault, Marc Howard
http://keplerscience.arc.nasa.gov/data/k2-programs/GO6032.txtSummary of K2 Program GO6069
Title: Characterizing Small K2 Planets with the HARPS-N Spectrograph
PI: Charbonneau, David (Harvard University Dept of Astronomy)
CoIs: Dressing, Courtney D; Dumusque, Xavier; Buchhave, Lars A; Latham, David W.; Vanderburg, Andrew; Lopez-Morales, Mercedes; Johnson, John Asher
http://keplerscience.arc.nasa.gov/data/k2-programs/GO6069.txtSummary of K2 Program GO6085
Title: K2 Exoplanet Ecliptic Survey - KEES
PI: Burke, Christopher J (SETI Institute)
CoIs: Mullally, Fergal; Huber, Daniel
http://keplerscience.arc.nasa.gov/data/k2-programs/GO6085.txtSummary of K2 Program GO6086
Title: Discovery and Vetting of K2 Exoplanets
PI: Thompson, Susan E (NASA Ames Research Center)
CoIs: Caldwell, Douglas A.; Coughlin, Jeffrey Langer; Mullally, Fergal; Quintana, Elisa Victoria; Rowe, Jason Frank
http://keplerscience.arc.nasa.gov/data/k2-programs/GO6086.txtSummary of K2 Program GO6087
Title: Searching for small planets around bright F, G and K stars
PI: Dragomir, Diana (LCOGT)
CoIs: Lendl, Monika; Kane, Stephen R; Demory, Brice-Olivier; Gillon, Michael; Alonso, Roi
http://keplerscience.arc.nasa.gov/data/k2-programs/GO6087.txtPosted
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by
Artman40
Paper about C5 and C6 candidates: http://arxiv.org/abs/1606.01264
See how many overlap with ones found in here.
Posted
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by
zoo3hans
in response to Artman40's comment.
Ok, let's see:
First the multiplanet candidates:
EPIC 212012119 (C5): https://talk.planethunters.org/#/boards/BPH0000007/discussions/DPH00019on (page 1):
"EPIC 212012119 Varoius dips, depth about 0.001, duration about 3 hours, one period 3.281 days, starting at BKJD 2309.138, depth 0.0013, duration 2.5 hours." and (page 15): "Re 212012119 from Hans Martin's list: a nice smooth LC here reveals two periodic transits that could be PCs.. However several very close visual companions can be seen on Aladin Lite. 0.77x R_sol estimate. s1=2309.138 p1=3.2805 d1=0.093 (2.23 hours) s2=2309.49 p2=8.438 d2=0.1275 (3.06 hours)"EPIC 212393193 (C6): not on our list
EPIC 212703473 (C6): https://talk.planethunters.org/#/boards/BPH0000007/discussions/DPH0001ff3 (page 12):
"EPIC 212703473 Multiplanet system, P1=6.79 days, starting at BKJD 2389.74, duration about 4 hours, depth 0.0003, P2=18.515 days, starting at BKJD 2388.17, duration about 4 hours, depth 0.0002" and (page 16): "Re 212703473 from Hans Martin's list: and another nice two planet MPC found by HM as well. This star said to be a giant or subgiant by Huber/NEA, but the transit durations suggest a slightly blended G1V. And the longer period PC radii estimate could be longer as well if grazing or more of a limb darkening effect from a higher impact transit perhaps. 1.07 R_sol estimate here. s1=2389.74 p1=6.787 d1=0.134 (3.22 hours), s2=2388.17 p2=18.515 d2=0.18 (4.32 hours)"EPIC 212768333 (C6): https://talk.planethunters.org/#/boards/BPH0000007/discussions/DPH0001ff3 (page 1):
"EPIC 212768333 Multiplanet system, P1=17.05 days, starting at BKJD 2388.61, depth 0.0024, duration 3.5 hours, P2=7.45 days, starting at BKJD 2388.02, depth 0.0008, duration 3.5 hours, even additional dips at BKJD 2385.885, 2402.92 and more." and (page 2): "Re 212768333 from Hans Martin's list: looks like another nice MPC find by HM with two more periodic candidates. Only two are really evident in the MAST data however. Also these durations see a bit shorter than the colors suggest, perhaps due to blending. So all radii here could be slightly greater but a 0.74x R_sol estimate used here. Also note that most of the malformed transit data was removed from both fits. s1=2388.613 p1=17.042 d1=0.15 (3.6 hours), s2=2388.02 p2=7.453 d2=0.1146 (2.75 hours), s3=2398.2 p3=23.40 p3=0.17 (4.0x hours) ???"EPIC 212779596 (C6): https://talk.planethunters.org/#/boards/BPH0000007/discussions/DPH0001ff3 (page 12):
"EPIC 212779596 Obviously a multiplanet system, P1=7.374 days, starting at BKJD 2389.94, duration 3.5 hours, depth 0.0018, P2=3.2255 days, starting at BKJD 2385.75, duration 3.0 days, depth 0.0008" and (page 15): "Re 212779596 from Hans Martin's list: indeed, a clean LC probably hosting two planet candidates. Duration fits suggest a bit larger star at ~0.90 R_sol. Also note the nearby visual companion 212779533 is a K2 target but does not appear to be bound to 212779596 (see distance values below). And there is little evidence of transit contamination there, but it is 80.48 arcsecs distant. s1=2389.94 p1=7.3716 d1=0.1333 (3.2 hours), s2=2385.75 p2=3.22475 d2=0.10 (2.4 hours)"Posted
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by
zoo3hans
in response to Artman40's comment.
C5 single planet candidates:
211308899 not on our list
211314705 not on our list
211319617 (Martti: 211319617 (P = 8.873) could be EB cont.) EPIC 211319617 regular transits with period 8.868 days, U-shaped, no secondaries visible, to me it looks like a valid candidate)
211328748 EPIC 211328748 4 transits at BKJD 2324.13, 2341.29, 2358.47, 2375.65. Period about 17.17 days. Depth 0.00026. Duration about 4 hours.
211331236 EPIC 211331236 Multiplanet candidate. One period 1.292 days. Starting at BKJD 2309.7037. Depth about 0.0015. Duration about 2 hours. Another object seems to have a period around 5.45 days. Similar depth. Duration about 3 hours. Starting at BKJD 2310.5137.
211333233 not on our list
211335816 not on our list
211336616 not on our list
211342524 Martti and JKD think it's an EB
211351816 (Martti: 211351816 (P = 8.402)) EPIC 211351816 first transit at 2309.06, period 8.402 days, depth 0.0009, duration about 7 hours. There seem to be other transits present in the LC as well.)
211355342 EPIC 211355342 Period 6.893 days, starting at BKJD 2310.8 , depth 0.0008, duration about 3 hours, fairly U-shaped.
211359660 (Martti: 211359660 (P = 4.736)) EPIC 211359660 P = 4.736 days, depth 0.0012, duration about 3.5-4.0 hours.)
211365543 not on our list
211375488 not on our list
211383821 not on our list
211391664 (Martti: 211391664 (P = 10.129)) Period about 10.138 days, depth 0.001, duration about 5.5 hours. Substructure visible in the transits, probably star spots -> maybe rotation period of star can be found.)
211399359 (Martti: 211399359 (P = 3.115) Could be cont.) EPIC 211399359 P = 3.115 days, depth 0.027, duration about 3 hours. Maybe Hot Jupiter.)
211401787 EPIC 211401787 Period 13.77 days, starting at BKJD 2318.06 , depth 0.0003, duration about 3.5 hours.
211413752 (Martti: 211413752 (P = 9.327)) Period around 9.324 days, starting at 2307.84, depth 0.0006, duration about 4 hours.
211418729 (Martti: 211418729 (P = 11.356)) EPIC 211418729 Period about 11.39 days, depth 0.0154, duration about 4.5 hours, U-shaped, looks like a fine warm Jupiter.
211424769 (Martti: 211424769 (P = 5.177))
211428897 not on our list
211439059 not on our list
211442297 (Martti: 211442297) P=20.27 days, depth 0.017, U-shaped, probably a good planet candidate. Also mentioned by ajamyajax and JKD.
211490999 (Martti: 211490999 (P = 9.842)) P=9.842 days, see also comment by ajamyajax http://talk.planethunters.org/?_ga=1.110727493.1777704650.1398881647#/boards/BPH0000007/discussions/DPH00019on?page=6 )
211491383 not on our list
211509553 (Martti: 211509553 perhaps cont./EB) EPIC 211509553 P=20.365 days, depth 0.036, U-shaped, a bit on the deep side, but might still be a valid PC (I see no secondaries).)
211525389 (Martti: 211525389 (P = 8.263)) EPIC 211525389 Period around 8.266 days, starting at BKJD 2315.0, depth 0.0014, duration 4 hours.)
211529065 EPIC 211529065 Period about 4.4 days, starting at BKJD 2309.97, depth 0.0013, duration about 3 hours.
211562654 EPIC 211562654 Multiplanet system. One period about 10.794 days, starting at BKJD 2314.78, depth 0.0006, duration about 4 hours. The second planet has period 22.63 days, starting at BKJD 2311.14, depth 0.0009, duration about 5 hours. There is even a chance for a small third planet with period 4.249 days, especially visible around BKJD 2346.56 and 2350.78, depth 0.0005, duration about 3 hours.
211569704 not on our list
211579112 EPIC 211579112 P=17.705 days, starting at BKJD 2323.42, depth 0.008, duration about 3 hours.
211586387 not on our list
211594205 EPIC 211594205 Period about 16.99 days, starting at BKJD 2315.5, depth 0.00035, duration about 3 hours, U-shaped.
211645912 not on our list
211713099 EPIC 211713099 P=8.56286 days, depth 0.0055, starting at 2308.15 , maybe TTV's present.
211733267 EPIC 211733267 P=8.658 days, depth 0.007, duration about 2.5 hours, starting at BKJD 2311.93
211736671 EPIC 211736671 P=4.732 days, depth 0.0008, starting at BKJD 2307.4, probably TTV's present.
211743874 not on our list
211763214 EPIC 211763214 P=21.19 days, depth 0.00035, starting at BKJD 2313.6 (ajamyajax pointed out the real period)
211770696 EPIC 211770696 P=16.273 days, depth 0.0008, starting at BKJD 2312.98
211770795 EPIC 211770795 Maybe multiplanet system, one planet with period 7.726 days, depth 0.0015, duration about 4 hours, starting at BKJD 2308.1, another planet maybe at BKJD 2316.2.
211770867 EPIC 211770867 P=27.69 days, depth 0.021, starting at BKJD 2314.89 , U-shaped, maybe fine Warm Jupiter, maybe small secondary transits starting at BKJD 2325.95
211779390 not on our list
211783206 not on our list
211800191 EPIC 211800191 P=1.1062 days, depth 0.001, starting at BKJD 2306.65
211804579 EPIC 211804579 Period 1.5233 days, starting at 2308.2, depth 0.0005, duration about 4 hours.
211808055 EPIC 211808055 P=3.3814 days, depth 0.0017, starting at BKJD 2309.62 Probably contamination by EPIC 211807843 (noted by ajamyajax )
211814733 211814733 Probably EB (not PC), V-shaped, secondaries visible, period 14.71 days, depth 0.0055, starting at BKJD 2312.89
211816003 EPIC 211816003 P=14.45 days, depth 0.0012, starting at BKJD 2311.86
211818569 EPIC 211818569 P=5.1854 days, depth 0.013, starting at BKJD 2310.56
211834065 not on our list
211886472 EPIC 211886472 P=19.64 days, depth 0.0057, starting at BKJD 2319.38
211897691 not on our list
211906259 not on our list
211919004 EPIC 211919004 P=11.721, depth 0.0012, starting at BKJD 2316.09
211923431 EPIC 211923431 Period about 29.74 days, starting at BKJD 2310.82, depth 0.0008, duration 6 hours.
211924657 EPIC 211924657 P=2.645 days, depth 0.0045, starting at BKJD 2309.001, TTY's present
211929937 EPIC 211929937 P=3.4765 days, depth 0.021, starting at BKJD 2309.45, this looks like a fine Hot Jupiter.
211941472 not on our list
211945201 EPIC 211945201 P=19.49 days, depth 0.0015, starting at BKJD 2325.83
211965883 not on our list
211969807 not on our list
211990866 EPIC 211990866 P=1.674 days, depth 0.0006, starting at BKJD 2307.71
211993818 EPIC 211993818 P=8.9865 days, depth 0.02, starting at BKJD 2307.04, could be a Hot Jupiter (I see no secondary transits), maybe another small planet at BKJD 2339.53 and 2375.93 with a possible period of 36.4 days, depth 0.0006
211995398 (Classified as EB on our list) 211995398 P=32.55 days, depth 0.055, maybe BD
212006318 EPIC 212006318 Maybe single transit at BKJD 2351.4, depth 0.0003, duration 6.5 hours, other transits with period 14.46 days, starting at BKJD 2314.3, depth 0.0002, duration about 6 hours.
212006344 EPIC 212006344 Period 2.22 days, starting at BKJD 2308.82, depth 0.0004, duration about 2 hours.
212008766 EPIC 212008766 P=14.13 days, depth 0.0017, starting at BKJD 2312.12
212009427 not on our list
212066407 EPIC 212066407 P=0.822 days, depth 0.0005, starting at BKJD 2307.367
212069861 EPIC 212069861 Period 30.96 days, starting at BKJD 2314.49 , depth 0.002, duration about 4 hours.
212088059 not on our list
212099230 EPIC 212099230 P=7.113 days, depth 0.0007, starting at BKJD 2308.96
212110888 EPIC 212110888 P=2.995 days, depth 0.0075, starting at BKJD 2308.35 , it looks like a fine Hot Jupiter. Now confirmed in http://arxiv.org/abs/1601.07635 and http://arxiv.org/abs/1602.00638 and http://arxiv.org/abs/1603.01721
212130773 EPIC 212130773 Period 18.715 days, starting at BKJD 2318.91, depth 0.002, duration about 7 hours.
212132195 EPIC 212132195 P=26.2 days, depth 0.001, starting at BKJD 2331.4
212136123 not on our list
212138198 EPIC 212138198 P=3.208 days, depth 0.002, starting at BKJD 2309.34
212141021 not on our list
212150006 EPIC 212150006 P=0.8983 days, depth 0.0025, starting at BKJD 2306.98
212152341 EPIC 212152341 Period 6.677 days, starting at BKJD 2308.3 , depth 0.06, duration about 2.5 hours. Maybe it's an EB instead since the depth is rather large.
212154564 EPIC 212154564 P=6.415 days, depth 0.007, starting at BKJD 2309.165
212157262 EPIC 212157262 Multiplanet system. One period 7.15 days, starting at BKJD 2313.32 , depth 0.0009, duration about 3.5 hours. Second period 13.61 days, starting at BKJD 2308.46, depth 0.0007 duration about 5 hours.
212161956 not on our list
212164470 EPIC 212164470 P=7.81 days, depth 0.0007, starting at BKJD 2311.87i.e. we had 67.44 % already on our list on PH !
(Note that we have still a few more candidates NOT on their list!)
Posted
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by
zoo3hans
in response to Artman40's comment.
C6 single planet candidates:
212270970 (from DE) EPIC 212270970 - seems to have dips with p = 0.717d
212278644 not on our list
212297394 not on our list
212300977 (from DE) EPIC 212300977 - well, maybe ~ 2% drop WASP-55 I reckon
212301649 not on our list
212310244 not on our list
212321305 (fron JKD) EPIC 212321305, S1 at 2395.9 BKJD, P = ?, Duration ~9.3 hrs, Depth ~7000 ppm
212330265 not on our list
212351026 (from JKD) EPIC 212351026 maybe 2 planets, close orbit S1 at 2385.17 BKJD, P = 2.54 d, Duration ~6.86 hrs, Depth ~4000 ppm; outer orbit S2 at 2397.49 BKJD, P = ?, Duration ~5.88 hrs, Depth ~3800 ppm (see also 212351405)
212351405 (from JKD) EPIC 212351405, S1 at 2385.16 BKJD, P = 2.548 s, Duration ~6.37 hrs, Depth ~4000 ppm
212357477 (from DE) EPIC 212357477 - period 6.327; ~Est. Rad 2.38Re
212370106 not on our list
212380207 not on our list
212394689 (comment from Mark) Re 212394689 from Coughlin mention on ExoFOP-K2: one PC identified (P=6.676514) and there appears to be a second transit @ P=2.5891 which seems to work with similar constraints. 0.92x R_sol used for both radius estimates shown, s1=2390.42 p1=6.678 d1=0.13542 (3.25 hours), s2=2386.547 p2=2.5891 d2=0.09875 (2.37 hours) (new)
212398508 (from DE) EPIC 212398508 - 2 transits; 46.432d period, start at 2404
212418133 not on our list
212420823 not on our list
212424622 not on our list
212425103 not on our list
212432685 not on our list
212435047 not on our list
212440430 (from DE) EPIC 212440430 - period 19.999; start 2395
212443973 not on our list
212451091 (from DE) EPIC 212451091 - period ~12.655
212454160 not on our list
212454422 not on our list
212460519 (from DE) EPIC 212460519 - period 7.385
212480208 (from DE) EPIC 212480208 - period 10.099
212495601 (from DE) EPIC 212495601 - dip 2440
212496592 (from DE) EPIC 212496592 - something with 2.589d period? i.e 2446
212499835 (from DE) EPIC 212499835 - PC or EB?? p = 6,877
212499991 not on our list
212521166 (from DE) EPIC 212521166 - period ~13.86
212529560 not on our list
212534729 not on our list
212543933 (from DE) EPIC 212543933 - period ~7.8d
212554013 (from DE) EPIC 212554013 - period ~3.587, possible PC imo, ~1.5% drop maybe Jovian type planet, imaged by Subaru, Possible Hot Jupiter?
212555594 not on our list
212562715 (from JKD) EPIC 212562715 - PC at ~2387.46 BKJD, p =13.5 d
212563850 (from JKD) EPIC 212563850 maybe a 2 planet system with TTV, s1 at 2389.72 BKJD, p1 =14.03 d, Re ~1.33, s2 at 2459.22 BKJD, p2 =55.09 d, Re ~1.72
212570977 (from DE) EPIC 212570977 - EB most likely ~3% sooo
212572439 (from DE) EB or blend ; 212572452 and 212572439 are very close together
212572452 see above
212575828 not on our list
212577658 (from JKD) EPIC 212577658 - PC with s =2388.33 BKJD, p =14.07 d, Duration ~3.92 hrs, Depth ~500 ppm
212579424 (from DE) RR_Lyrae
212580872 (from DE) EPIC 212580872 - period 14.783d
212586030 not on our list
212587672 (from DE and me) EPIC 212587672 seems to be a good (and rather small!) PC candidate. P=23.221 days, depth 0.0006, duration 4.5 hours.
212592101 not on our list
212639319 EPIC 212639319 P=13.84 days, starting at BKJD 2389.43, duration about 3 hours, depth 0.002
212645891 EPIC 212645891 P=0.32815 days, starting at BKJD 2384.709, depth 0.0021, duration about 2 hours
212646483 not on our list
212661144 not on our list
212672300 EPIC 212672300 P=39.7 days, starting at 2410.02, depth 0.001, duration about 8.5 hours
212679181 not on our list
212688920 EPIC 212688920 P=62.83 days, starting at BKJD 2387.24, depth 0.045, duration about 3.5 hours, a bit V-shaped, rather deep transits, so might be an EB.
212689874 EPIC 212689874 P=15.855 days, starting at BKJD 2392.05, depth 0.0013, duration about 5 hours, U-shaped, second planet: P2=28.46 days, starting at BKJD 2410.02, depth 0.0007, duration about 6.5 hours.
212697709 EPIC 212697709 P=3.951 days, starting at BKJD 2385.29, depth 0.0075, duration 2.5 hours, this looks like another nice Hot Jupiter, now confirmed in http://arxiv.org/pdf/1603.05638v1.pdf
212705192 EPIC 212705192 P=2.2688 days, starting at BKJD 2386.61, depth 0.007, duration about 3 hours
212712473 not on our list
212735333 EPIC 212735333 P=8.36 days, starting at BKJD 2385.18, duration about 4 hours, depth 0.0006.
212737443 EPIC 212737443 P=13.60 days, starting at BKJD 2388.38, depth 0.0018, duration 4 hours, additional longer dip (duration about 6 hours) at BKJD 2394.82 and BKJD 2460.34 which would give P2=65.52 days.
212756297 EPIC 212756297 P=1.3376 days, starting at BKJD 2385.1, depth 0.0325, duration 2.5 hours.
212757601 EPIC 212757601 P=1.0179 days, starting at BKJD 2385.015, depth 0.013, duration 2.5 hours.
212772113 EPIC 212777123 Maybe single transit at BKJD 2426.63, depth 0.0009, duration about 8 hours.
212782836 not on our list
212796016 not on our list
212803289 EPIC 212803289 P=18.255 days, starting at BKJD 2400.85, depth 0.0023, duration about 12 hours.
212813907 not on our list
212828909 not on our listi.e. we had 56.34 % already on our list on PH !
(Note that we have still a few more candidates NOT on their list!)
Posted
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by
Artman40
Looks like more than 1 post was needed. [Edit] Thanks for fixing!
Posted
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by
Artman40
By the way, have there been any campaign 4 candidate lists?
Posted
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by
zoo3hans
in response to Artman40's comment.
Have a look at https://talk.planethunters.org/#/boards/BPH0000007/discussions/DPH0000qr5
Posted
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by
Artman40
I meant a discovery paper.
Posted
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by
Artman40
Someone submitted a new paper submitted on Arxiv. You might want to take a look.
http://arxiv.org/abs/1607.02339
"New planetary and EB candidates from Campaigns 1-6 of the K2 mission"
"With only two functional reaction wheels, Kepler cannot maintain stable pointing at its original target field and entered a new mode of observation called K2. Our method is based on many years of experience in planet hunting for the CoRoT mission. Due to the unstable pointing, K2 light curves present systematics that are correlated with the target position in the CCD. Therefore, our pipeline also includes a decorrelation of this systematic noise. Our pipeline is optimised for bright stars for which spectroscopic follow-up is possible. We achieve a maximum precision on 6 hours of 6 ppm. The decorrelated light curves are searched for transits with an adapted version of the CoRoT alarm pipeline. We present 172 planetary candidates and 327 eclipsing binary candidates from campaigns 1, 2, 3, 4, 5 and 6 of K2. Both the planetary candidates and eclipsing binary candidates lists are made public to promote follow-up studies. The light curves will also be available to the community."
Posted
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by
Artman40
http://arxiv.org/abs/1609.00239
" EPIC 212803289: a subgiant hosting a transiting warm Jupiter in an eccentric orbit and a long-period companion"
New planet discovered from Campaign 6 data. Radius: about 1.3 of Jupiters, mass about the same as Jupiter. Orbital period: 18 days.
This system also might contain a brown dwarf with a period of several hundred days.
Posted
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by
zoo3hans
in response to ajamyajax's comment.
EPIC 212398486 is now confirmed in https://arxiv.org/abs/1703.07416
P = 21.8 days
Posted
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by
zoo3hans
in response to ajamyajax's comment.
EPIC 212460519 is now validated in https://arxiv.org/abs/1703.07416
P = 7.4 days
Posted
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by
ProtoJeb21
EPIC 212525618: Probably one of the most infamous stars on Exoplanet Explorers due to initial analysis showing the possibility of TWO potentially habitable planets. However, Keck observations done by Ian Crossfield showed that the star is likely not a high-end red dwarf as Huber et al. estimated. Also, I found out just a few days ago that the system is actually one planet in a 14.425 day orbit; the two planet estimate was a mistake caused by the use of unprocessed data. Using this I was able to get a good upper limit for the size of the star (0.944 R_sun and 0.970 M_sun) by using transit duration and orbital period with the Planetary Calculator. It is possible that the star is a tad smaller. The candidate planet has a radius of 2.557 (+0.302/-0.393) R_Earth and may be a "water giant" like Gliese 1214b due to the host star's high metallicity of +0.115 [Fe/H].
Folded transits with LcViewer:
Brief overview:-Epoch of 2398.878208
-Between 2.164 and 2.860 R_Earth
-Temperature estimated to be 690 Kelvin (if host star is 5500 Kelvin)
-Sigma of 10.618.
Posted
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by
zoo3hans
in response to ProtoJeb21's comment.
Yes, I had added EPIC 212525618 already to my list of EE candidates (which have not yet been discussed on PH).
See https://talk.planethunters.org/#/boards/BPH0000008/discussions/DPH0001if4Posted
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by
zoo3hans
EPIC 211428897 might have 4 planets: (might be C5 though)
P001 PlanetaryTransit1 1 211428897 2309.246500 2309.307800 1.610000000000 300
P002 PlanetaryTransit2 1 211428897 2308.443946 2308.525804 2.177045000000 447
P003 PlanetaryTransit3 1 211428897 2310.678136 2310.741184 4.968382000000 625
P004 PlanetaryTransit4 1 211428897 2311.238818 2311.315306 6.262553000000 423
Posted
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by
ajamyajax
Re 212797028 from Hans Martin's list: this c6 and possible c17 target seems unresolved perhaps because it could be a binary, but a chance for a large gas giant or maybe more likely a brown dwarf imo if a late F-type star. ~1.12 RSun estimate shown.
s1=2397.47; p1=29.98; d1=0.2667 (6.4 hours +/-)
Semi-Major Axis a (A.U.) = 0.187
Radius (R_Sun) = 1.12
Mass (M_Sun)= 0.966
Period ~= 29.98 days
Duration ~= 6.401 hours
Duration in BKJD ~= 0.2667 daysEPIC, 2MASS, J mag, H mag, K mag, J - H, H - K, (J-H spectral type, stellar mass est) (H-K spectral type, stellar mass est)
212797028 , 2MASS J13511632-0538045 , 11.909 , 11.679 , 11.538 , 0.23 , 0.141 , ('F8V', 1.18) , ('K5V',0.75)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
212797028 207.818 -5.6346 0.0 13.097 6
212798341 207.8201 -5.5937 147.36 17.935 6epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist,k2_propid
212797028,2MASS J13511632-0538045,207.818027,-5.634600,,,,13.097,-19.400,-6.200,,GO6030_LCAliases
WISE J135116.31-053804.6
Posted
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by
zoo3hans
in response to zoo3hans's comment.
EPIC 212521166 now confirmed in an update https://arxiv.org/abs/1605.04291
Posted