C10 K2 finds
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by
Dolorous_Edd
The K2 C10 minimally corrected lightcurves, courtesy of Mark Omohundro (ajamyajax)
Special thanks to Al Schmitt (HEK) for providing us with LcViewer.
Posted
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by
Dolorous_Edd
PC
229004835 - period 16.131; mentioned by Hans
229090328 - period 16.77
229087531 - or eb - period 4.845
229068853 - period ~0.8 ; eb perhaps
229068743 - period ~0.8 ; eb perhaps
229024057 - period 3.150 ; v - shaped
229022237 - single dip at 2751.59, U-shaped looks good
229003104 - maybe dips at 2744.13, 2747.28, 2779.17
228962330 - period ~12.431 ; mentioned by Hans
228968947 - period 1.57, maybe eb contamination
228961884 - as I mentioned earlier " some dips , unsure if this is contamination or what", period 0.696
228954821 - period 2.833 ; v-shaped
228935570 - maybe EB or PC period 5.17
228929423 - Eb or Pc - period 3.142, maybe another dip at 2745.83
228991609 - period 4.560, maybe another dip at 2790.167
228980099 - dips period 5.613; maybe has second pc see 2783.41, 2810.60
228842877 - period ~19d ; mentioned by Hans; maybe dip at 2776.77 and shorter period
228894622 - small dips period ~1.85
228888935 - period 5.712, maybe second PC , see 2772.47, 2772.47
228857838 - maybe dips at 2751.29 and 2772.87
228846243 - period 25.5 d ; mentioned by Hans
228856435 - period 1.326
228845657 - period ~3.26, maybe EB
228809550 - period ~4d
228754001 period 9.1days, mentioned by Hans
228748826 - transits with 4d period, mentioned by Hans
228786343 - single dip at 2814.7
228797006 - period ~0.8d
228777535 - maybe dip at 2755.84
228772532 - maybe D eb or PC - 2.103
228745776 - dips at 2747.32, 2747.32, 2747.32?
228720681 - transits with 15.782 d period ( mentioned it first as "maybe dip at 2753.43" ) now has clear period
228707509 - single dip at 2752.5 , second dip at 2783.209 ; max period 30.702 ( update: period now is 15.350 )
201581953 - period 8.187, second possible pc at 2799 and second dip at 2811.9 period 32.701
228735255 - In Hans list, period =19.92 days , good PC candidate
228722026- In Hans list, EB I think clearly visible secondary at 2774.831
228707197 - maybe period 1.684 ; i.e. 2751.5 and 2753.305
201548063 - D - period 16.521 - additional dips at 2743.90 and 2743.9056 and 2752.5 and 2776.91
201419907 - maybe transits with ~41.920d period ; start at 2748.21 ; mentioned by Hans
201437844 - maybe transits with ~ 21.08 period ; start at 2778.14 ; second dip in the glitch area, mentioned by Hans
201208775 - single dip at 2789.64, mentioned by Hans
201153193 - D - period 5.385 - maybe a PC instead of EB , dips at 2752.017 , 2775.56?
201180665 - D - 4 transits ; at 2753.488 and 2771.26 and 2789.04 ; period ~17.768d - maybe PC instead of EB?
201103376 dip at 2776.5
201093731 - single dip at 2801.83, period unknown;
EB EPIC
228798896 - IMO binary ; mentioned by Hans; visible secondries see 2783.00 ; 2793.90; 2810.2726
229007685 - binary, mentioned by Hans
228798896 - binary, mentioned by Hans
248369179 - maybe C eb - period 0.348
248369167 - maybe C eb - period 0.279
248369166 - maybe C eb - period 0.328
248369134 - maybe C eb - period 0.328
229172226 - D - period 2.644 - possible additional dips at 2743.67; 2743.67; 2743.67; 2774.13; 2775.59
229158131 - D - period 6.782 - third body at 2780.43?
229154176 - maybe C eb - period 0.369
229154173 - maybe C eb - period 0.369
229147949 - C - period 0.260
229140094- C - period 0.336
229139811 - C - period 0.780
229120114 - SD - period 1.013
229115109 - C - period 0.768
229102136 - maybe C eb - period 0.320
229097718 - D - period 3.793
229060398 - maybe C eb, likely spots; period 0.7
229058175 - D - max 22.263
229055476 - D - period 20.546
229053251 - C - period 0.680
229039390 - SD - period 0.252
229033837 - D - period unknown - 2 dips at 2746 and 2778.62
229033644 - SD - period 0.738
229031537 - maybe C eb - period 0.330
229029820 - maybe C eb - period 0.347
229029548 - D - max period 22.96
229027984 - maybe C eb - period 0.331
229021667 - SD - period 0.237
228993409 - D - period ~7.5
228979479 - D - period unknown - single dip at 2744.089
228974641 - C - period 0.350
228953430 - D - period unknown - maybe dips at 2746.275 and 2753.9589
228953016 - maybe C eb or spots - period 1.42
228952623 - D - period 7.040
228946219 - D - period unknown - 2 dips at 2753.0 and 2756.7
228944874 - maybe C
228900184 - maybe C
228998377 - maybe C
228996183 - maybe C
228996166 - maybe C
228982332 - C - period 0.380
228978957 - C - period 0.296
228967671 - D - period 5.520
228966295 - C - period 0.226
228952777 - C - period 0.312
228947351 - C - period 0.256
228920214 - SD - period 1
228921961 - maybe EB
228897796 - maybe C eb - period 0.670
228891859 - C - period 0.346
228891397 - possible D - period unknown - interesting at 2780.08 dip?
228886439 - C - period 0.326
228866733 - C - period 0.370
228861354 - D - period 2.952
228865343 - D - max period 30.579
228864595 - D - period 0.628
228859499 - SD - period 0.420 - uneven depth
228852764 - C - period 0.326
228845439 - C - period 0.368
228840683 - SD - period 0.684
228838123 - maybe EB
228835662 - D - period 2.331
228829773 - C - period 0.370
228827347 - C - period 0.292
228822317 - D - period 0.980 - shallow depth, possible contamination
228820979 - SD - period 0.998
228812805 - D - max period 23.755 - third body at 2771.6?
228811968 - SD - period 0.335
228810541 - C - period 0.324
228810481 - C - period 0.460
228808967 - D - period 1.252 - shallow depth
228789760 - D - period 4.086
228787567 - maybe C eb - period 0.346
228785430 - maybe C eb - period 0.241
228784099 - D - period unknown: 2 transits, at 2752.50 and 2752.50
228784019 - D - period ~5.966
228782584 - D - period unknown - single dip at 2751.20
228780174 - C - period 0.300
228778489 - maybe C eb - period 0.338
228773585 - C - period 0.374
228765921 - D - period 8.641
228763503 - C - period 0.314
228729886 - D - period 6.491 - Trinary? dips at 2755.64 and 2780.4204 - period 24.776
228722934 - D - period ~4.4 - mentioned by Hans
228719801 - C ( from Mark's list )
228717426 - C ( from Mark's list )
228715393 ( from Mark's list )
228714185 - maybe C eb - period 0.748
228710407 ( from Mark's list )
228709764 ( from Mark's list )
201650804 - maybe C eb - period 0.361
201648002 - maybe C eb - period 0.554
201563020 - maybe C eb - period 0.310
201558427 - C - period 0.256
201539869 - SD - period 0.262
201531633 - D - period 10.3
201510813 - D - maybe single dip at 2802.01
201502199 - D - period ~7.11
201496916 - single dip at 2799.58 ( glitch IMO ) ; mentioned by Hans™
201486590 - maybe C - period 0.361
201479221 - D - single dip at 2787.367; mentioned by Hans
201454397 - D - period unknown - single dip at 2755.71
201416299 - Maybe C
201407575 - D - period 15.757 d
201399366 - Maybe C
201399076 - D - period 4.065 maybe less
201386760 - maybe HB
201383569 - maybe C
201375522 - D - period 0.880
201371836 - D - I have problems with period maybe trinary ~1-2d
201351894 - C - period 0.183
201335426 - SD - period 0.510
201324636 - maybe EB;
201325107 - SD - period 0.735
201323613 - maybe C - period ~0.184
201321030 - SD - period 0.184
201313818 - D - period 23.56
201303108 - maybe C
201293970 - D - period 9.068
201288509 - SD - period 0.821
201278316 - D - period 3.439
201274872 - D - period 8.783
201266918 - C - period ~0.2
201225735 - D - maybe single dip at 2805.53; period unknown
201221065 - maybe EB? - C
201211969 - SD - period 1.962
201198497 - Irregular dips ; bad correction?
201198039 - SD? - period 5.923
201166041 - D - period 2.711
201154640 - C - period 0.147
201143594 - SD - period 0.242
201140202 - D - period ~8d
201133876 - SD - period 0.484
201133845 - SD - period 0.484 - contamination from 201133876?
201132898 - maybe C
201116643 - maybe C
201112822 - C
201112515 - C
201110848 - D - period 4.749 - 50% depth? third dips at 2744.07 and 2748.094 and 2771.8?
201110197 - C
201106668 - C
201103527 - maybe dip at the end? 2776.07
201101375 - dip at 2780, mentioned by Hans
201099741 - D - period 4.028 - dip 2773.534?
201097479 - C
201091593 - EB? - D - period 2.940
201073315 ( known EB from Mark's list )
RR lyr
248369171
248370105
248369181
248369178
248369177
248369175
248369174
248369172
248369168
248369164
248369163
248369162
248369161
248369160
248369159
248369158
248369157
248369156
248369155
248369154
248369153
248369152
248369151
248369150
248369149
248369148
248369147
248369146
248369145
248369144
248369143
248369142
248369141
248369140
248369139
248369138
248369137
248369136
248369135
229174057
229167571
229153968
229152498
229152137
229150262
229145656
229139563
229138826
229134937 - likely contamination
229134696
229124195 - likely contamination
229118327
229117038
229108491
229105036
229095488
229079124
229075488
229072887 - likely contamination
229054494
229054355 - likely contamination
229040738
229027107
229026332
229025772
229021597
228995882
228984615
228976569
228969131
228967411
228964090
228961401
228948127
228939126
228930895
228926067
228891282
228889770 - maybe R contamination
228883462
228881816
228878890
228877473 - maybe R contamination
228871058
228858758
228845601
228843578
228842305
228839859
228838306
228830506
228818738
228806239
228803883
228802296
228798116
228798037
228793624
228785948
228784317
228779200
228777682
228771459
228769382
228767767
228763080
228763070
228759724
228715595 - R ( from Mark's list )
228711572 - R ( from Mark's list )
201666354
201665943
201550621
201490066 - R
201477422 - R
201476942 - R
201460347 - R
201458397 - R
201438798 - R
201434925 - R
201433919 - R
201433531 - R
201431997 - R
201416966 - R
201413544 - R
201411146 - R
201410425 - R
201405034 - R
201395405 - R
201390991 - R
201385473 - R
201359919 - R
201344920 - R
201344269 - R
201342448 - R
201338728 - R
201337319 - R
201315896 - R
201263436 - R
201254085 - R
201253413 - R
201246467 - R
201243594 - R
201226859 - R
201220769 - R
201200192 - R
201199981 - R
201199013 - R
201187587 - R
201185585 - R
201169634 - C
201146611 - R
201146494 - R
201132450 - R
201129022 - R
201128971 - R
201124459 - maybe R
201121817 - R
201116316 - maybe C?
201085427 - R
201103700 - R
Other EPIC
201145865 - maybe dip at 2806.72
228725737 - maybe 2 transits ; at 2772.86 and 2772.86
228723214 - maybe 2 dips; at 2817.66 and 2817.66
228714789 - strange dips at 2784.77 and 2788.4 and 2790.15
201506654 - maybe dip at 2774.22
201386760 - dips at the end, maybe glitches
201348600 - maybe SSO at 2785.96 , interesting there are spikes on the sides with equal interval ~1,8d
201209102 - maybe dip at 2801.32
201169771 - maybe dips with ~16d period ; at 2744.18 and 2744.18 and 2806.738
201106687 maybe dip at 2749.116
201102018 - maybe dip at 2779.15
201101185 - maybe dips at 2785.90 and 2790.126
248369442 - maybe dip at 2745.32
229177052 - maybe DSCT / GDOR
229172892 - maybe dip 2746
229150145 - SSO at 2746.54?
229149596 - SSO at 2751.506?
229092596 - periodic variable
229079910 - maybe DSCT / GDOR
229056929 - maybe real dip at 2780.2
228994039 - maybe big dip at 2775.046
228970015 - maybe dip at 2744.9375
228968383 - maybe single dip at 2745.1
228961884 - some dips , unsure if this is contamination or what
228956226 - interesting inverse transits/ SSO. at 2753.44, 2754.88, 2773.65
228951356 - DSCT / GDOR
228951109 - maybe dip at 2780.4
228944204 - maybe dip at 2780.420
228998973 - SSO? at 2745.94
228933260 - multiple dips ; glitches?
228929505 at 2755.828
228922952 - DSCT / GDOR
228921287 - maybe dip at 2749.35
228898114 - DSCT / GDOR
228862430 maybe dip at 2745.6
228860716 - good looking dip at 2745.60
228858896 - maybe dip at 2746.39
228850719 - periodic variable
228853579 - maybe dip at 2776.701
228845980 - maybe dip at 2749.1
228823923 - DSCT / GDOR
228815466 - maybe dip at 2749.5
228814986 - pulsating
228806390 - maybe dip at 2778.622
228804162 - DSCT / GDOR
228970015 at 2744.98
228850719 - pulsating of some sort
228791576 at 2755.869
228784587 at 2755.83
228783524 at 2744.079
228765809 - maybe at 2747
228729886 - D - period 6.48 mentioned by Hans
228728004 - D - period 5.97 ; mentioned by Hans
228727483 - D - period 46.195 ; mentioned by Hans
228700812 - flare or SSO
201667779 - 2743.68
201667495 at 2754.5
201626078 - 2743.69
201581953 - dips at 2774.2393 and
201578486
201571526
201543910 - SSo at 2745.468
201494374 - interesting SSO cross at 2746.34
201493225 - dips at the beginning, maybe glitches
201460929 - maybe at 2748.21
201460387 - at 2753.9 and 2774.48
201441969 - at 2774.2
201411827 - maybe dip at 2748.2
201409851 - at 2775.495
201409304 - DSCT / GDOR
201408531 - starspots?
201378349 at 2751.97
201376964 - maybe dips at 2771.05 and 2771.05165
201375554 maybe dip at 2751.98
201365123 - maybe dip at 2744.92 and 2752.53 and 2775.608
201364041 maybe dip at 2774.23
201359737 maybe dip at 2773.98
201351894 - at 2771.3
201345562 - multiple big dips, how real they are dunno
201344983 - maybe dips at 2746.878 and 2773.973
201327319 - maybe dip at 2752.65
201324905 - maybe dips
201322959 - periodic variable?
201312188 - maybe DSCT
201303199 - maybe dip at 2752.63
201299177 - bid dip at 2743.77?
201278518 - maybe dip at 2748.04
201255087 - at 2749.46
201214645 - dip at 2773.68
201212916 - maybe dips at 2745.570 and 2752.05
201202518 - maybe dip at 2749.2183
201201504 - DSCT/ GDOR
228720681 - maybe dip at 2753.43
201252911 - periodic variable
201200243 - periodic variable
201192131 - strange dips at the end
201191986 dip at 2801.30
201191863 - LPV?
201180191 - maybe EB?
201161411 - periodic variable
201158054 - maybe dip at 2774.40
201133852 - periodic variable
201125293 - maybe dip at 2771.60
201101345 - maybe dip at 2780.50
201080601 - strange deep dips, but how real they are?
201081029 - maybe dip at 2752.201
201081635 - 2753.84 and 2774.07
201087168 - outburst at 2746.43940
201091865 - maybe dip at 2756.42, 2750.587, 2743.59
201096733 dip at 2774.43
201093530 - maybe dips at 2771.10, 2780.4, 2780.4
EPIC 200s
RR lyr EPIC
200072049
200072048
200072047
200072046
200072045
200072044
200072043
200072042
200072041
200072040
200072039
200072038
200072037
200072036
200072035
200072034
200072033
200072032
200072031
200072030
200072029
200072028
200072027
200072026
200072025
200072024
200072023
200072022
200072021
Posted
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by
ajamyajax
Special credit: thanks for the kadenza package created by Geert Barentsen for NASA's Kepler/K2 Guest Observer Office.
https://github.com/KeplerGO/kadenza
More grateful acknowledgements for our amateur astronomy research published here:
"This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program."
"Some/all of the data presented in this research were obtained from the Mikulski Archive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts."
Posted
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by
zoo3hans
From:
Kepler Mission Manager Update: K2 Campaign 10
During a scheduled contact with NASA's Kepler space telescope on Thursday, July 28, the team found the photometer—the camera onboard the spacecraft—powered off. The photometer was turned on again and the flight system returned to autonomous science operations on Monday, Aug. 1.
And:
Break in science collection during K2 Campaign 10
News article posted on 04 Aug 2016 by Tom Barclay
The K2 Campaign 10, ongoing since July 6, has suffered a couple of unexpected reductions to the intended science.
The initial line of sight pointing of the spacecraft at the start of the campaign was offset from its intended target by 12 arcsec, sufficient to lose much of the expected target light from the assigned apertures. This error was compounded by a downlink issue that failed to provide the requisite focal plane data that is intended to catch such errors. These data were subsequently acquired and pointing corrected on July 13. Although the spacecraft was in fine point throughout, the pointing offset will compromise much of the data for the first week of observations, and is likely to more seriously affect those targets near the edge of the focal plane where roll is largest.
Then, on July 20, the photometers was turned off as an apparent response to a failure of a module on the focal plane. The spacecraft otherwise continued to operate normally, and the anomaly was not discovered until a scheduled data downlink on July 28.
With extremely poor communication geometry at science attitude, spacecraft health checks consume significant DSN resources, requiring a 70-meter antenna. Such health checks are therefore performed infrequently during the K2 mission, roughly every two weeks.
While the cause of this is yet to be confirmed, the observables are in family with those seen in conjunction with the failure of science CCD Modules 3 and 7 in 2010 and 2014. Further, thermal data retrieved from the spacecraft are strongly suggestive of a drop in power dissipated by Module 4 that is again in family with a similar drop when Modules 3 and 7 failed. Thus there is a strong likelihood that Module 4 is no longer functioning. If this is indeed the case, this would leave us with 18 remaining science modules of the initial 21.
We undertook a recovery which involved reorienting the spacecraft to attain higher data rate communications with Earth and carefully powering on the various components that had been switched off, and science observations resumed on August 3.
Courtesy raw data processed by Mark Omohundro and LcViewer created by Al Schmitt, and lately also using the C102 data from MAST.
PC candidates:
EPIC 228724232 is WASP-107, P=5.722 days, starting at BKJD 2745.6, duration about 3.5 hours, depth 0.025.
EPIC 201087168 P=52.14 days, starting at BKJD 2750.52, duration 6.4 hours, depth 0.0002.
EPIC 201091593 P=2.918 days, starting at BKJD 2744.06, duration about 3 hours, depth 0.0025.
EPIC 201092629 P=26.80 days, starting at BKJD, 2751.22, duration 5.8 hours, depth 0.0012.
EPIC 201101352 P=31.628 days, starting at BKJD 2753.28, duration 2.45 hours, depth 0.019.
EPIC 201101375 single dip at BKJD 2780.31, duration about 3.5 hours, depth 0.01. U-shaped. Not visible in MAST.
EPIC 201102594 P=6.513 days, starting at BKJD 2746.72, duration 2.45 hours, depth 0.0056.
EPIC 201106507 single transit at BKJD 2771.19, duration about 52 hours, depth 0.005.
EPIC 201127136 single dip at BKJD 2749.73, duration 7.8 hours, depth 0.002.
EPIC 201127519 P=6.179 days, starting at BKJD 2752.54, duration 4 hours, depth 0.0145.
EPIC 201128338 P=32.64 days, starting at BKJD 2775.62, duration 5.8 hours, depth 0.0026. Now confirmed in https://arxiv.org/pdf/1710.03239.pdf
EPIC 201132684 a MPC with at least 4 planets, P1=unknown, at BKJD 2797.89, duration 12.75 hours, depth 0.0022, P2= 10.065 days, starting at 2747.40, duration about 4 hours, depth 0.0009, P3=25.52 days, starting at 2746.32, duration about 5.4 hours, depth 0.0010, P4=5.90 days, starting at 2745.0, duration 3.4 hours, depth 0.0004.
EPIC 201144098 P=49.65 days, starting at 2747.23, duration 6.4 hours, depth 0.0014.
EPIC 201144625 maybe P=20.51 days, starting at 2747.56, duration 3.9 hours, depth 0.0024.
EPIC 201149529 maybe single transit at BKJD 2803.23, duration 13.24 hours, depth 0.0015.
EPIC 201153193 P=5.388 days, duration about 5.5 hours, depth 0.033. U-shaped. Mentioned by Ivan.
EPIC 201166680 MPC with at least 2 planets, P1=24.95 days, starting at BKJD 2751.5, duration 6.4 hours, depth 0.0004, P2=11.54 days, starting at BKJD 2748.68, duration 4.9 hours, depth 0.0003. Maybe P3=6.92 days, starting at BKJD 2747.82, duration 4.8 hours, depth 0.00018.
EPIC 201167126 single transit at BKJD 2812.32, duration 22 hours, depth 0.0087. U-shaped.
EPIC 201180665 P=17.768 days, starting at BKJD 2753.5, duration 4.5 hours, depth 0.037. U-shaped, it looks like a good candidate to me. Mentioned by Ivan.
EPIC 201184835 P1=58.88 days, starting at BKJD 2753.17, duration 7.3 hours, depth 0.0007, P2=9.8 days, starting at BKJD 2747.35, duration 6.3 hours, depth 0.0007.
EPIC 201195734 maybe MPC , P1=5.875 days, starting at BKJD 2747.38 (not really visible at this position in the LC), duration 6.8 hours, depth 0.0188. Other dips at 2778.69, duration 6.4 hours, depth 0.0305, at 2786.54, duration 6.4 hours, depth 0.0171. Mentioned by Ivan.
EPIC 201208775 single transit at BKJD 2789.66, duration 5 hours, depth 0.041.
EPIC 201211526 P=21.08 days, starting at 2755.46, duration 5.4 hours, depth 0.0004. Mentioned by Ivan.
EPIC 201219245 P=20.5 days, starting at BKJD 2747.58, duration 3.4 hours, depth 0.0063.
EPIC 201222789 P=32.92 days, starting at BKJD 2744.16, duration 3 hours, depth 0.0077. Mentioned by Ivan.
EPIC 201225286 P=12.43 days, starting at 2753.49, duration 4.9 hours, depth 0.0012. Mentioned by Ivan.
EPIC 201227100 P=3.705 days, starting at BKJD 2745.16, duration 2.5 hours, depth 0.0012. Mentioned by Ivan.
EPIC 201227197 P=3.705 days, see above. One star seems to be contaminated. Mentioned by Ivan.
EPIC 201242716 P=5.89 days, starting at BKJD 2747.28, duration 8.3 hours, depth 0.0013. Some transits are not easily visible (probably over-corrected).
EPIC 201274010 P=26.01 days, starting at BKJD 2756.53, duration 4.4 hours, depth 0.0012.
EPIC 201285825 P=24.13 days, starting at BKJD 2784.94, duration 3 hours, depth 0.0005.
EPIC 201299088 P=21.22 days, starting at BKJD 2746.12, duration 12.25 hours, depth 0.0022. U-shaped. EPIC mentioned by Ivan.
EPIC 201328009 P=37.9 days, starting at BKJD 2746.5, duration 6 hours, depth 0.004.
EPIC 201352100 P=13.38 days, starting at BKJD 2775.17, duration 4 hours, depth 0.0013. (First transit is hidden in a spike of the LC.)
EPIC 201357643 P=11.89 days, starting at BKJD 2754.55, duration about 6.5 hours, depth 0.003. (better visible in the corrected data set of Andrew Vanderburg). Another transit at BKJD 2788.56, also some transits look like a blend of two, so I assume we have at least two planets here. But it looks exactly the same as EPIC 201357835 , so one of them must be contamination.
EPIC 201357835 See above comment. Mentioned by Ivan.
EPIC 201386739 P=5.77 days, starting at BKJD 2744.89, duration 4 hours, depth 0.0027.
EPIC 201390927 P=2.638 days, starting at BKJD 2745.06, duration 2 hours, depth 0.0011.
EPIC 201411366 maybe single long transit of a Jupiter-like planet, at BKJD 2793.5, duration about 64 hours, depth 0.02.
EPIC 201437844 MPC, P1=21.08 days, starting at BKJD 2778.13, duration 5.5 hours, depth 0.0012, P2=9.55 days, starting at BKJD 2744.0, duration 5.4 hours, depth 0.00035. Both nicely U-shaped.
EPIC 201454397 P=12.598 days, starting at BKJD 275.715, duration 2 hours, depth 0.02. Maybe EB though as mentioned by Ivan.
EPIC 201528828 maybe MPC, P1=14.088 days, starting at BKJD 2753.77, duration 5.4 hours, depth 0.0017. Mentioned by Ivan. P2=10.955 days, starting at BKJD 2755.60, duration 3.5 hours, depth 0.0004.
EPIC 228707509 P=15.355 days, starting at BKJD 2752.5, duration 5.5 hours, depth 0.032. U-shaped. Mentioned by Ivan.
EPIC 228720681 P=15.785 days, transit at BKJD 2753.41 and 2784.99 and 2800.77, duration 4.5 hours, depth 0.011. U-shaped.
EPIC 228724899 P=5.205 days, starting at BKJD 2748.23, duration 2.4 hours, depth 0.0016. Mentioned by Ivan, but no period given, no date, nothing.
EPIC 228725972 MPC, P1=10.098 days, starting at BKJD 2745.30, duration about 4 hours, depth 0.0012, P2=4.481 days, starting at BKJD 2743.69, duration about 3.5 hours, depth 0.0005.
EPIC 228731258 P=15.775 days, starting at BKJD 2779.18, duration 3.5 hours, depth 0.013.
EPIC 228734889 P=48.25 days, transit at BKJD 2751.83 and 2800.08, duration about 7 hours, depth 0.032. U-shaped.
EPIC 228735255 P=6.57 days, starting at BKJD 2748.707, duration about 4.5 hours, depth 0.015. U-shaped. Now confirmed in https://arxiv.org/abs/1706.06865
EPIC 228751041 P=9.25 days, starting at BKJD 2747.82, duration 6.5 hours, depth 0.006. Doubtful case.
EPIC 228748826 P=4.015 days, starting at BKJD 2751.12, duration 4 hours, depth 0.0014.
EPIC 228754001 P=9.17 days, starting at BKJD 2775.56, duration 9 hours, depth 0.0017. Now confirmed in https://arxiv.org/abs/1707.00779 with P=9.1708 days.
EPIC 228758948 P=12.2 days, starting at BKJD 2753.83, duration 4.9 hours, depth 0.0017. Mentioned by Ivan.
EPIC 228790468 maybe single transit at BKJD 2789.52, duration 5.5. hours, depth 0.0031.
EPIC 228734900 P=15.8755 days, starting at BKJD 2754.36, duration 6.4h, depth 0.0005. EPIC mentioned by Ivan, but no period or dates given.
EPIC 228739306 P=7.175 days, starting at BKJD 2747.92, duration 3.5 hours, depth 0.0012. Mentioned by Ivan.
EPIC 228759584 P=14.59 days, starting at BKJD 2753.48, duration 6.4 hours, depth 0.0005.
EPIC 228797006 P=0.8001 days, starting at BKJD 2744.37, duration 2.5 hours, depth 0.0285. Mentioned by Ivan.
EPIC 228798746 P=2.698 days, starting at BKJD 2744.79, duration 3 hours, depth 0.0005. Mentioned by Ivan.
EPIC 228798896 P=5.449 days, starting at BKJD 2752.96, duration about 4 hours, depth 0.028.
EPIC 228799725 single transit at BKJD 2778.55, duration 27 hours, depth 0.0084. It could also be the secondary eclipse of an EB of course.
EPIC 228801451 MPC, P1=8.33 days, starting at BKJD 2745.01, duration 3.4 hours, depth 0.0007, P2=0.584 days, starting at BKJD 2743.46, duration 2.4 hours, depth 0.0002, single transit at BKJD 3.9 hours, depth 0.0009. Mentioned by Ivan.
BKJD 228809391 P=19.6 days, starting at BKJD 2744.18, duration 3.9 hours, depth 0.001. Mentioned by Ivan.
EPIC 228809550 P=4.001 days, starting at BKJD 2746.99, duration 3 hours, depth 0.014. Mentioned by Ivan.
EPIC 228824249 P=19.92 days, starting at BKJD 2750.14, duration 3.5 hours, depth 0.0006, only two transits. Doubtful case.
EPIC 228834632 P=23.476 days, starting at BKJD 2782.077, duration 3.5 hours, depth 0.002. Only 2 transits unfortunately.
EPIC 228837107 P=6.37 days, starting at BKJD 2749.42, duration about 4 hours, depth 0.006. Maybe other dips as well.
EPIC 228842877 P=19.63 days, starting at BKJD 2786.61, duration about 3.5 hours, depth 0.0016.
EPIC 228846243 P=25.55 days, transit at BKJD 2782.5 and 2808.05, duration 9.8 hours, depth 0.003.
EPIC 228865263 P=15.29 days, starting at BKJD 2746.85, duration 6.5 hours, depth 0.0013. But EPIC 228866569 shows the same "transits", so it's probably contamination.
EPIC 228873333 P=14.02 days, starting at BKJD 2747.475, duration about 4 hours, depth 0.0005.
EPIC 228888935 P=5.691 days (Ivan has it wrong), starting at BKJD 2745.97, duration about 5 hours, depth 0.007. U-shaped.
EPIC 228894622 P=1.9645 days, starting at BKJD 2744.36, duration about 2.5 hours, depth 0.002. Mentioned by Ivan (with incorrect period).
EPIC 228934525 MPC, P1=3.677 days, starting at BKJD 2744.69, duration 2.5 hours, depth 0.0009, P2=7.955 days, starting at BKJD 2743.37, duration 3.0 hours, depth 0.0013, maybe P3=16.37 days, starting at BKJD 2748.8, duration 3.0 hours, depth 0.0006. Mentioned by Ivan and commented by Mark. The first two planets are now confirmed in https://arxiv.org/pdf/1710.03239.pdf
EPIC 228944875 maybe single transit at BKJD 2752.01, duration 5.5 hours, depth 0.002. Not visible in MAST data.
EPIC 228962330 P=12.444 days, starting at BKJD 2750.75, duration about 5 hours, depth 0.005, U-shaped.
EPIC 229004835 P=16.14 days, starting at BKJD 2780.77, duration about 3.5 hours, depth 0.0005.
EPIC 229007685 P=14.015 days, starting at BKJD 2756.1, duration 6.4 hours, depth 0.048, U-shaped, no secondaries visible. So maybe still a planet if the star is rather small.
EPIC 229001706 P=12.3 days, starting at BKJD 2748.77, duration 3.9 hors, depth 0.002.
EPIC 229021605 single transit at BKJD 2785.73, duration 15.2 hours, depth 0.018. U-shaped. Another, shorter and shallower transit at BKJD 2771.58, duration 10.3 hours, depth 0.001.
EPIC 229022237 single transit at BKJD 2751.61, duration 8.8 hours, depth 0.021. Mentioned by Ivan.
EPIC 229030520 P=20.33 days, starting at BKJD 2751.98, duration about 6 hours, depth 0.016. Although similar dips occur on other LC's as well (for example 229031773).
EPIC 229039773 P=15.16 days, starting at BKJD 2751.54, duration 4.4 hours, depth 0.0012. Mentioned by Ivan.
EPIC 229090328 P=16.77 days, starting at BKJD 2774.80, duration 3 hours, depth 0.0063. U-shaped. Mentioned by Ivan.
EPIC 229112475 P=20.21 days, starting at BKJD 2782.0, duration 2.5 hours, depth 0.007. Mentioned by Ivan.
EPIC 229131722 P=15.46 days, starting at BKJD 2752.78, duration 4.9 hours, depth 0.0007.
EPIC 229133720 P=4.0365 days, starting at BKJD 2746.93, duration 3 hours, depth 0.001. Mentioned by Ivan.
EPIC 229165302 P=3.4927 days, starting at BKJD 2745.27, duration 2.5 hours, depth 0.0165.
EB candidates:
EPIC 201073315 P=0.26975 days
EPIC 201095218 P=1.962 days, starting at BKJD 2745.22, duration about 1 hour, but probably contamination (see below).
EPIC 201097479 P=1.9617 days, starting at BKJD 2745.22, duration about 1 hour. Practically identical to EPIC 201095218, so it looks like some kind of contamination.
EPIC 201140202 P=7.993 days. Mentioned by Ivan.
EPIC 201164893 / 201165597 P=2.708 days, starting at BKJD 2744.72, duration about 4.5 hours. Since the dips occur exactly on the same dates, it must be contamination by EPIC 201166041.
EPIC 201211969 P=1.963 days.
EPIC 201215774 P=18.184 days.
EPIC 201262663 P=11.35 days, Obvious excentrical secondary eclipses visible. Mentioned by Ivan as a PC.
EPIC 201313818 Mentioned by Ivan. P=23.56 days.
EPIC 201324636 Mentioned by Ivan. P=0.7445 days.
EPIC 201407575 Mentioned by Ivan. P=15.757 days.
EPIC 201479221 single dip at BKJD 2787.37, duration 10.7 days, depth 0.159, the shape looks like a secondary eclipse of an EB.
EPIC 201496916 primary eclipse at BKJD 2799.6, duration about 10 hours.
EPIC 201510813 eclipse at BKJD 2802.02, duration 5.9 hours, depth 0.166. Mentioned by Ivan.
EPIC 201531633 P=10.233 days, starting at BKJD 2748.245, duration 7.5 hours, depth 0.0345. EPIC mentioned by Ivan.
EPIC 201548063 P=16.5125 days. Primary eclipses at BKJD 2752.6 and 2785.61. Secondary eclipses at BKJD 2743.90, 2776.92 and 2793.43.
EPIC 201581953 P1=8.187 days, starting at BKJD 2747.97, duration about 3 hours, depth 0.09. Secondaries starting at BKJD 2754.1, also well visible at BKJD 2778.64, 2803.16, 2811.36. Mentioned by Ivan as a PC. On the other hand there are some unexplained additional dips which could be a circumbinary planet (say at BKJD 1777.0, 2784.90 (!), 2809.05, 2817.45).
EPIC 228709764 P=0.7605 days, starting at BKJD 2743.97. EPIC mentioned by Ivan.
EPIC 228722026 P=6.685 days, starting at BKJD 2744.75, duration about 3 hours. Well, with better data (provided by Mark) and detrending the data with an experimental feature by Al Schmitt, I must admit that there are secondaries in between, so it must be an EB.
EPIC 228722934 P=4.439 days, starting at BKJD 2744.66.
EPIC 228725455 P=0.7875 days, starting at BKJD 2743.33.
EPIC 228727483 P=46.195 days, secondary eclipses at BKJD 2746.715 and 2792.91, primary eclipse at BKJD 2777.84.
EPIC 228728004 P=5.97 days, starting at BKJD 2747.05, duration 5 hours. Secondaries starting at BKJD 2743.66, duration also about 5 hours.
EPIC 228729473 P=16.785 days, starting at BKJD 2752.74, duration 16.2 hours, depth 0.0025. Mentioned by Ivan as contamination.
EPIC 228729886 P=6.48 days, starting at BKJD 2748.58, duration 6.5 hours. P2=1.961 days, starting at BKJD 2749.157, duration 1 hour - these second set of eclipses seems to be contamination though, since this period of 1.961 days is found on other LC's as well.
EPIC 228730089 P=16.7325 days, starting at BKJD 2747.115, duration about 4 hours, depth 0.043, small secondaries are visible in the corrected data.
EPIC 228733251 P=0.65735 days.
EPIC 228734649 P=0.4493 days.
EPIC 228737888 P=1.857 days.
EPIC 228737892 P=1.857 days, starting at BKJD 2750.35, duration 5 hours, depth 0.0057, contamination by the above mentioned 228737888.
EPIC 228738561 P=0.2609 days.
EPIC 228739088 P=0.469 days.
EPIC 228742099 P=0.9358 days.
EPIC 228745398 P=12.9925 days. Somewhat eccentical.
EPIC 228746527 P=10.39 days, nice giant EB.
EPIC 228749910 P=21.49 days, secondary eclipse at BKJD 2747.57, primary eclipse at BKJD 2755.41 and 2776.9.
EPIC 228752632 P=9.575 days.
EPIC 228753298 P=2.5805 days.
EPIC 228753672 P=17.68 days.
EPIC 228754930 P=0.33857 days.
EPIC 228755416 P=1.289 days.
EPIC 228755638 P=0.2335 days.
EPIC 228765921 P=8.646 days. EPIC mentioned by Ivan.
EPIC 228772532 P=2.102 days, EPIC mentioned by Ivan.
EPIC 228777296 P=0.9135 days, starting at BKJD 2743.8, small secondaries can be seen in between.
EPIC 228782584 Huge (secondary) eclipse at BKJD 2751.19, duration 14 hours, another one at BKJD 2781.646, period 30.466 days, primary eclipse at BKJD 2787.5, duration 8.3 hours. Mentioned by Ivan.
EPIC 228784019 P=10.365 days. EPIC mentioned by Ivan.
EPIC 228784080 P=10.983 days. Contamination by EPIC 228784099. EPIC mentioned by Ivan as a PC.
EPIC 228784099 P=10.983 days. EPIC mentioned by Ivan.
EPIC 228812805 P=11.875 days. EPIC mentioned by Ivan.
EPIC 228822317 P=0.9808 days. EPIC mentioned by Ivan.
EPIC 228835662 P=2.332 days. EPIC mentioned by Ivan.
EPIC 228845657 Mentioned by Ivan, but I cannot see the given period there. P=6.31 days. Alternating eclipse depths.
EPIC 228856024 P=7.2945 days, starting at BKJD 2748.14, duration about 3 hours, depth 0.066, but clearly visible secondary eclipses.
EPIC 228865343 P=15.29 days, EPIC mentioned by Ivan.
EPIC 228929423 P=3.142 hours, clearly visible secondary eclipses in the MAST data (BKJD 2751.06, 2754.22). Mentioned by Ivan as a PC or EB.
EPIC 228952623 P=7.043 days. EPIC mentioned by Ivan.
EPIC 228954821 P=2.884 days, depth 0.07, very V-shaped, mentioned by Ivan as a PC.
EPIC 228961884 P=0.696 days, starting at BKJD 2743.86, duration about 2 hours, depth variable up to 0.055, V-shaped.
EPIC 228967671 P=5.519 days, starting at BKJD 2747.992, duration about 7.5 hours. EPIC mentioned by Ivan.
EPIC 228968947 P=1.648 days, starting at BKJD 2744.1, duration about 2 hours. Mentioned by Ivan who has got the period wrong. Detrended LC shows alternating eclipse depths.
EPIC 228979479 P=44.18 days, extremely eccentric. Maybe additional long transit at BKJD 2787.5631, duration 4.8 days, depth 0.032. EPIC mentioned by Ivan.
EPIC 228980099 P=5.613 days, starting at BKJD 2744.51, duration 4 hours, depth 0.036.. Mentioned by Ivan. Appears to be an EB according to the analysis by Mark.
EPIC 228982777 single eclipse at BKJD 2750.04, although one pixel is extremely low with a depth of 0.33.
EPIC 228991609 P=9.12 days, duration 6.5 hours. Alternating eclipse depths. Mentioned by Ivan as a PC.
EPIC 228993409 P=7.49 days. EPIC mentioned by Ivan.
EPIC 229017525 P=0.83 days, duration 2 hours.
EPIC 229019101 P=18.09 days, strating at BKJD 2743.57, duration 9.3 hours, depth 0.0053. Mentioned by Ivan.
EPIC 229019129 P=18.07 days, starting at BKJD 2754.03, duration about 9.3 hours. Second set of eclipses starting at BKJD 2743.6, duration about 9.3 hours.
EPIC 229021667 P=0.23672 days, starting at BKJD 2743.48, duration 2 hours, depth 0.296. Mentioned by Ivan.
EPIC 229024057 P=3.152 days, starting at BKJD 2746.27, duration about 4 hours, depth 0.020. Mentioned by Ivan as a PC, V-shaped, analysis by Mark supports the EB classification.
EPIC 229029548 P=7.658 days, starting at BKJD 2747.01, duration about 5 hours. EPIC mentioned by Ivan. Period corrected by Mark.
EPIC 229033837 P=21.07 days, starting at BKJD 2746.01, duration about 8 hours. EPIC mentioned by Ivan.
EPIC 229055476 P=20.55 days. EPIC mentioned by Ivan.
EPIC 229058175 P=22.27 days. EPIC mentioned by Ivan.
EPIC 229068743 P=0.7985 days. Maybe a triple system with a larger EB (P=0.7918 days) and a smaller EB (P=0.7985 days), which could also be a large planet or BD (small secondaries are visible, say at BKD 2750.056, 2750.853, 2751.6499). Mentioned by Ivan as a PC or EB.
EPIC 229087531 P=4.845 days, starting at BKJD 2743.61, duration about 3.5 hours. Small secondaries are visible, starting at BKJD 2746.03. Mentioned by Ivan as a PC or EB.
EPIC 229097718 P=3.792 days. Nice giant EB. EPIC mentioned by Ivan.
EPIC 229120114 P=1.0129 days. EPIC mentioned by Ivan.
EPIC 229158131 P=13.57 days probably. EPIC mentioned by Ivan.
EPIC 229172226 P=2.6436 days. EPIC mentioned by Ivan.
EPIC 248369113 P=0.2698 days (or double this period).
RR_Lyrae:
EPIC 228723194
EPIC 228724588
EPIC 228731765
EPIC 228734213
EPIC 228734699
EPIC 228737749
EPIC 228742497
EPIC 228743780
EPIC 228744634
EPIC 228756284
EPIC 248370105
Other:
EPIC 201110785 maybe transit at BKJD 2755.65.
EPIC 201286646 maybe single transit at BKJD 2803.25, duration 31.4 hours, depth 0.001.
EPIC 201294316 maybe transits at BKJD 2781.27 and 2799.12 which would give a period of 17.85 days, duration about 5 hours, depth 0.0024.
EPIC 201415738 maybe single transit at 2795.76, duration 5.9 hours, depth 0.038.
EPIC 201419907 maybe transits at BKJD 2748.217 and 2790.148 which would give a period of 41.931 days, duration about 3.5 hours, depth 0.003.
EPIC 201452615 maybe single transit at BKJD 2808.97, duration 7.35 hours, depth 0.0007.
EPIC 201483687 single transit at BKJD 2780.43, duration 7.35 hours, depth 0.0006. Mentioned by Ivan.
EPIC 201499313 maybe single transit at BKJD 2777.13, duration 6.4 hours, depth 0.76 (!).
EPIC 228723696 maybe transit at BKJD 2756.71, duration about 2.5 days.
EPIC 228789248 maybe transit at BKJD 2793.17, duration 4hours, depth 0.0018.
EPIC 228817109 maybe transit at BKJD 2784.35, duration about 5 hours, depth 0.002.
EPIC 228829805 maybe transit at BKJD 2772.65, duration about 6.8 hours, depth 0.0043.
EPIC 228830675 P=38.1 days, starting at 2752.06, duration about 3 hours, depth 0.0015.
EPIC 228848845 maybe single long transit at BKJD 2812.41, duration 29.4 hours, depth about 0.0005.
EPIC 228849382 P=12.125 days, starting at BKJD 2745.47, duration about 4 hours, depth 0.0014. Mentioned by Ivan.
EPIC 228856754 maybe single long transit at BKJD 2796.46, duration 29.4 hours, depth 0.0029.
EPIC 228860782 maybe transit at BKJD 2792.48, duration 5.4 hours, depth 0.003.
EPIC 228884333 maybe MPC with P1=20.575 days, starting at BKJD 2747.45, duration 3 hours, depth 0.0048. P2=33.221 days, starting at BKJD 2745.56, duration about 4 hours, depth 0.0031.
EPIC 228889741 maybe transit at BKJD 2774.0, duration 5.9 hours, depth 0.0030.
EPIC 228923641 single dip at BKJD 2755.16, duration about 4 hours, depth 0.001.
EPIC 228925244 single dip at BKJD 2751.3, duration about 4 hours, depth 0.0007.
EPIC 228951098 similar looking dips at BKJD 2784.42, 2785.90, 2797.68, 2800.14.
EPIC 228996183 single dip at BKJD 2785.91, duration about 3.5 hours, depth 0.0095. Mentioned by Ivan as an EB.
EPIC 229033320 single dip at BKJD 2784.36, duration maybe about 4 hours, depth 0.0039.
EPIC 229049676 maybe P=24.79 days, starting at BKJD 2777.3, duration 2.5 hours, depth 0.0026.
EPIC 229149295 interesting outbreak at BKJD 2795.75, maybe some kind of dwarf nova.
EPIC 229172892 dips at BKJD 2785.75, 2786.85, 2789.51, 2811.6, 2818.5. Mentioned by Ivan.
EPIC 248369936 mabye single transit at BKJD 2781.87, duration 11.7 hours, depth 0.035,.
Glitches:
BKJD 2752.26
BKJD 2774.495
BKJD 2775.62
BKJD 2777.07
BKJD 2784.77
BKJD 2788.45
BKJD 2788.57
BKJD 2790.16
BKJD 2794.35
BKJD 2804.14
BKJD 2810.08
EPIC 228747074 large dip at BKJD 2803.64, duration 12.25 hours, 0.0025, but EPIC 228756545 shows the same, so it must be some glitch.
EPIC 228928447 single dip at BKJD 2751.3, duration 6.4 hours, depth 0.002, although EPIC 228935997 shows exactly the same "transit", so it's probably a glitch.
EPIC 229094850 maybe single transit at BKJD 2799.05, duration 9.5 hours, depth 0.0015, although EPIC 229098070 has also a dip at 2799.05, duratiom 8.3 hours, depth 0.0015, and also EPIC 229098514 at 2799.05, so it's probably a glitch.
Posted
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by
ajamyajax
in response to zoo3hans's comment.
Yes, that depth calibration goes for my first pass through this raw data. So a work in progress. And best to use a combination of methods to determine if these early transits are binary or could be planetary.
Posted
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by
ajamyajax
Re 228724232 from Hans Martin's list: just a closer look at WASP-107b in this minimally corrected raw long cadence data.
s1=2745.603 p1=5.72143 d1=0.11458 (2.75 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)
228724232 , 2MASS J12333284-1008461 , 9.378 , 8.777 , 8.637 , 0.601 , 0.14 , ('K5V', 0.75) , ('K5V',0.75)Semi-Major Axis a (A.U.) = 0.056
Stellar diameter ratio = 0.76
Stellar mass ratio = 0.725
Period ~= 5.715 days
Duration ~= 2.7508 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228724232 188.3869 -10.1461 0.01 11.243 10
228723783 188.3538 -10.1695 144.18 9.256 10epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
228724232,2MASS J12333284-1008461,188.386868,-10.146149,,,,11.243,-96.100,-9.600,
...Summary of K2 Program GO10060
Title: Short-cadence lightcurves of WASP-107 and WASP-118: a sub-Saturn transiting a spotted star, and a hot Jupiter
**PI: Anderson, David Robert (Keele University)
CoIs: Hellier, Coel; Southworth, John **For planets that transit across their host stars, we can use spectroscopy and photometry to measure planetary mass and radius. This leads to constraints on the planets' bulk compositions, internal structures, and formation and evolution histories. We recently discovered two transiting planet systems, WASP-107 and WASP-118, which will be on silicon during K2 campaigns 10 and 8, respectively.
WASP-107b is a warm Saturn in a 5.7-day orbit around a K6 star and WASP-118b is a hot Jupiter in a 4.0-day orbit around an F6 star. Both stars are bright (V~11) and so are good targets for further study; indeed only 18 (13) Kepler exoplanet host stars are brighter than WASP-107 (WASP-118). As accurate and precise stellar and planetary dimensions require well-sampled transit lightcurves, we request short-cadence (SC) data. We have our own software proven capable of processing and analysing the data.
It would be particularly interesting to know the bulk composition of WASP-107b. With a mass 2.2 times that of Neptune and 0.40 times that of Saturn, but a radius 0.94 times that of Jupiter, WASP-107b is in the transition region between ice giants and gas giants. This sets a lower limit on the planetary mass above which large gaseous envelopes can be accreted and retained by proto-planets on their way to becoming gas giants. WASP-107b will prove useful to planetary formation theory, which faces the challenge of explaining how ice giants avoid the runaway gas accretion that otherwise would have turned them into gas giants.
By measuring the wavelengths of star-light preferentially scattered and absorbed by a transiting planet's atmosphere (transmission spectroscopy), we can infer the atmosphere's composition, and thus the planet's formation and evolution history. Due to the brightness of the host stars and the distended natures of the planetary atmospheres, both WASP-107 and WASP-118 are good targets for transmission spectroscopy.
Giant planets in few-day orbits, or 'hot Jupiters', are thought to have formed farther out and then migrated inwards. The pathway(s) via which hot Jupiters migrate are poorly understood, though we can rectify this by measuring the orbital obliquities of a range of systems.
We will measure the sky-projected obliquity of WASP-118b with awarded spectroscopy time. With SC K2 data we will determine the inclination of the stellar spin axis and thus the orbital obliquity in three dimensions. WASP-107 rotates too slowly to measure obliquity via spectroscopy, but we are afforded an alternative opportunity due to the spottiness of the star. Its spottiness is evidenced by the periodic modulation of the WASP survey lightcurve and a spot-crossing event in a follow-up lightcurve. By measuring the times at which star spots are occulted by the planet over multiple transits, for which SC data are mandatory, we can infer the obliquity of the planet's orbit.
Targets requested by this program that have been observed (1)
EPIC ID, RA (J2000) [deg], Dec (J2000) [deg], magnitude, Investigation IDs
228724232, 188.386868, -10.146149, 11.243, GO10056_LC|GO10060_LC|GO10032_LC|GO10077_LC|GO10042_LC|GO10060_SC
Posted
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by
ajamyajax
Looks like a number of interesting programs from proposals for c10:
https://keplergo.arc.nasa.gov/k2-approved-programs.html#campaign-10
Summary of K2 Program GO10063
Title: Testing asteroseismology with bright red giants using C8 and C10 K2 timeseries and interferometry
PI: Boyajian, Tabetha Suzanne (Yale University)
CoIs: Silva Aguirre, Victor; Creevey, Orlagh; Huber, Daniel; White, Timothy RWe propose to observe bright red giants stars in long cadence mode in the K2 campaign fields 8 and 10, where interferometric and high-resolution spectroscopic supporting observations will allow us to address several exciting science questions pertaining to 1) asteroseismic scaling relations, 2) chemical mixing processes in stellar interiors, and 3) the abundance of helium.
Widely used in the asteroseismology of red giants, asteroseismic scaling relations connect stellar properties such as masses and radii to easy-to-derive seismic parameters such as the frequency of maximum power and the large frequency separation. Although scaling relations do have some theoretical justification, they are still mostly based on the only star whose parameters we truly know: the Sun. The precise seismic K2 observations coupled with high-quality ground-based interferometric and spectroscopic data of bright nearby giants will allow us to subject the scaling relations to the most demanding tests.
The second application is to constrain the poorly understood mixing processes working inside red giants, such as thermohaline mixing, rotation, and deep circulation. These processes are predicted to have different impact at different stages of red giant evolution, and to leave imprints in the surface chemical composition of a star. Precise seismic log (g) from K2 time series, coupled with high resolution spectroscopy, will allow for a detailed abundance determination of a large number of chemical species. The correlations between elements (e.g. [C/ Fe] vs [N/ Fe]) and departure from their theoretically predicted values (as in the case of Li or 12 C/13 C) are tracers of internal mixing processes, and will be studied as a function of the seismically determined mass.
The third goal of this proposal is to address one of the biggest uncertainties in stellar astrophysics: the abundance of helium in stars. The helium second ionization zone inside a star produces an abrupt change in the local sound speed, which is detectable in the Fourier spectrum of time series as a periodic variation. We will construct detailed models of red giants where this variation is detected, and coupled with independent constraints on angular diameter and detailed surface composition, we will put stringent constraints on the helium abundance of red giants and test our assumptions on enrichment laws of the Galaxy.
We have selected ~40 bright (Kp~5-8) red giants which are ideally suited for this project due to their precisely determined distances, large angular sizes for interferometry, and detectable oscillations in the 80 day K2 baseline. Red giants observed by Kepler were generally too faint to meet these criteria, making K2 uniquely suited to perform these observations. Our proposal addresses compelling questions in stellar structure and evolution, and is hence directly related to the K2 GO solicitation.Targets requested by this program that have been observed (20)
EPIC ID, RA (J2000) [deg], Dec (J2000) [deg], magnitude, Investigation IDs
201115532, 183.969867, -6.160412, 7.344, GO10901_LC|GO10063_LC|GO10031_LC|GO10036_LC
201192131, 182.051917, -4.287023, 7.862, GO10063_LC
201237723, 180.805022, -3.395424, 8.141, GO10063_LC
201255019, 181.499226, -3.13159, 6.192, GO10063_LC|GO10031_LC|GO10025_LC
201262300, 184.643463, -3.022272, 8.368, GO10063_LC
201298562, 183.175386, -2.472732, 6.983, GO10063_LC
201375835, 183.750079, -1.326593, 7.303, GO10901_LC|GO10063_LC|GO10031_LC
201421083, 183.470038, -0.639088, 8.291, GO10063_LC
201421666, 181.797635, -0.629952, 8.364, GO10063_LC
201488638, 184.243154, 0.352119, 8.407, GO10063_LC
201502783, 180.588633, 0.563681, 8.14, GO10068_LC|GO10063_LC
228717527, 186.090125, -10.475109, 8.406, GO10063_LC|GO10036_LC
228730861, 187.660602, -9.824456, 8.043, GO10063_LC
228739714, 182.701113, -9.397219, 7.311, GO10063_LC|GO10040_LC|GO10042_LC|GO10031_LC|GO10036_LC
228744286, 187.85561, -9.181614, 7.023, GO10063_LC|GO10031_LC
228750193, 184.834134, -8.914654, 8.779, GO10063_LC
228758857, 191.248612, -8.532006, 7.327, GO10063_LC
228781957, 184.090186, -7.531885, 8.341, GO10063_LC
228787476, 185.789748, -7.299126, 6.783, GO10063_LC|GO10031_LC
229056929, 186.419094, -0.282177, 8.41, GO10032_LC|GO10063_LC|GO10036_LCFrom: https://keplergo.arc.nasa.gov/data/k2-programs/GO10063.txt
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ajamyajax
Re 201371836 from Ivan's list: and an interesting apparent white dwarf system visible in the c10 raw cadence. Sparse data makes the period difficult to confirm but p=0.335x seems right and the presence of a transit seems to indicate a binary. And there is no obvious sign of this transit in the nearby target.
s1=2743.938 p1=0.335902 d1=0.0354167 (0.85 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)
201371836 , 2MASS J12125824-0123101 , 14.830 , 14.347 , 13.935 , 0.483 , 0.412 , ('K2V', 0.85) , ('M7V',0.098)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
201371836 183.2427 -1.3862 0.02 17.195 10
201371589 183.2522 -1.3898 36.59 15.522 10epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
201371836,2MASS J12125824-0123101,183.242698,-1.386158,,,,17.195,,,From VSX:
Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
0.00 SDSS J121258.25-012310.1 -- 12 12 58.25 -01 23 10.2 Vir EA/WD 0.33587093 16.9 r' (2.85V)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=185597Type EA: "β Persei-type (Algol) eclipsing systems. Binaries with spherical or slightly ellipsoidal components. It is possible to specify, for their light curves, the moments of the beginning and end of the eclipses. Between eclipses the light remains almost constant or varies insignificantly because of reflection effects, slight ellipsoidality of the components, or physical variations. Secondary minima may be absent. An extremely wide range of periods is observed, from 0.2 to ≥10000 days. Light amplitudes are also quite different and may reach several magnitudes."
Type WD: "Binary systems with at least one white-dwarf component, or a single rotating white dwarf."
Listed as SDSS J121258.25-012310.1 -- White Dwarf on Simbad, Proper motions mas/yr: -14 18, Spectral type: DA+dMe, 12 12 58.25 -01 23 10.2
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JKD
EPIC 201074196, p=?, s at 2784.74 BKJD, duration ~3,43 hrs, depth ~0.84%, U-shape
EPIC 201093731, p=?, s at 2801.82 BKJD, duration ~6.37 hrs, depth ~3.4%
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JKD
EPIC 201106507, p=?, s at 2771.88 BKJD, duration ~51.97 hrs, depth~0.5%
EPIC 201106668, EB with p=0.36 d
EPIC 201110848, EB with p~4.74 d
EPIC 201127519, p=6.178 d, s at 2752.55 BKJD, duration ~3.92 hrs, depth ~1.6%
EPIC 201140202, EB with p=7.989 d
EPIC 201145643, p=?, s at 2802.04 BKJD, duration ~4.41 hrs, depth ~2.79%
EPIC 201153193, P=5.39d, s at 2751.388 BKJD, duration ~4.90 hrs, depth ~~3.5% (U-shape and slightly eccentric)
EPIC 201274872, looks like an EB with a third object in the orbit, Eccentric Trinary System p ~8.8 d
EPIC 201324383, p= 28.942 d, s at 2789.53. BKJD, duration ~4.90 hrs, depth ~0.16%
EPIC 201399076, obviously a Trinary; p=4.065 d, s at 2811.65 BKJD signal depth is significantly higher compared to the signals
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ajamyajax
Re 228720681 from Ivan's and Hans Martin's lists: this target appears to have a healthy Jupiter class planet candidate based on this pixel data fit with a Huber/ExoFOP posted stellar radius of 1.067 R_sol. Note these transits are best seen in either the tpf pixel summary or raw cadence data so far, which could be a common theme in c10 where at times some corrective programs generate better-looking light curves than others (meaning MAST and beyond will be better in other cases). And of course a stellar transit is also possible here.
s1=2753.42 p1=15.781 d1=0.165833 (3.98 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)
228720681 , 2MASS J12344723-1019107 , 12.736 , 12.411 , 12.330 , 0.325 , 0.081 , ('G8V', 0.94) , ('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
228720681 188.6968 -10.3197 0.02 13.763 10epic_number,tm_name,ra,dec,k2_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228720681,2MASS J12344723-1019107,188.696830,-10.319662,,1.067±0.426,0.934±0.115,13.763,-12.000,-8.200, 7.157e+02±2.627e+02
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JKD
EPIC 201437844 is obviously at least a #2-planet system, S1=2778.13 BKJD , S2=2799.21 BKJD as there are different transit durations and transit depths. Both are U-shaped
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ajamyajax
Re 228735255 from Hans Martin's and Ivan's lists: the transit spotted looks good in all the available light curves, but fairly deep with a Huber/ExoFop value of 1.094 R_sol which fits to an estimated 14.37Re for a transiting object.. A theoretical orbit calculated at this duration and at the star's equator also seems to work very near the Huber stellar mass and radius values. Also an orbit at the equator might account for the U-shaped fit. If the size estimate is close, perhaps this could be a brown dwarf.
s1=2748.711 p1=6.57 d1=0.15625 (3.75 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)
228735255 , 2MASS J12323296-0936274 , 11.421 , 11.068 , 10.995 , 0.353 , 0.073 , ('G8V', 0.94) , ('G2V',1.0)Semi-Major Axis a (A.U.) = 0.069
Stellar diameter ratio = 1.1
Stellar mass ratio = 0.997
Period ~= 6.573 days
Duration ~= 3.751 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228735255 188.1373 -9.6076 0.01 12.483 10
228735097 188.1449 -9.6158 39.77 13.457 10epic_number,tm_name,ra,dec,k2_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228735255,2MASS J12323296-0936274,188.137348,-9.607640,,1.094±0.966,1.010±0.181,12.483,-6.200,6.500, 4.067e+02±3.202e+02
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ajamyajax
in response to JKD's comment.
Can't wait to see what this LC looks like in more corrected data.
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JKD
EPIC 201454397 looks like an eccentric EB, maybe there is another object around this Binary System (already mentioned by DE as a pot EB and by zoo3hans as a pot PC)
EPIC 201479221, EB with a single signal S1 at 2787.367 BKJD, duration ~10.78 hrs, depth ~16% (already mentioned by DE and Hans as a possible EB)
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JKD
EPIC 201496916, obviously an EB with a single signal at S=2799.58 BKJD, duration ~9.80 hrs, depth ~22%
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Dolorous_Edd
in response to JKD's comment.
S=2799.58 likely a glitch
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JKD
in response to Dolorous_Edd's comment.
EPIC 201496916
I agree, that many signals at s~2799 BKJD are glitches. However, in this case the transit duration is about 22% compared to the other mentioned transit depths in the range of ~0.1 to 0.2%. Therefor I believe the other LCs are contaminated by EPIC 201496916
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ajamyajax
Just some catch up on previously mentioned possible binary systems...
Re 229087531 from Ivan's and Hans Martin's lists: as mentioned, this appears to be a binary with a transit depth of ~3.7%.
s1=2743.615 p1=4.84485 d1=0.13833 (3.32 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)
229087531 , 2MASS J12433484+0027403 , 12.251 , 11.923 , 11.869 , 0.328 , 0.054 , ('G6V', 0.97) , ('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
229087531 190.8952 0.4612 0.0 13.335 10
229087537 190.927 0.4614 114.69 15.246 10epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
229087531,2MASS J12433484+0027403,190.895157,0.461223,,0.992±0.367,0.901±0.100,13.335,14.400,-29.400, 5.155e+02±2.000e+02
Re 229024057 from Ivan's and Hans Martin's lists: V-shaped as mentioned and looks stellar at an ~1.98% drop in flux and 17.8Re minimum for a transiting object.
s1=2746.275 p1=3.15158 d1=0.13 (3.12 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)
229024057 , 2MASS J12432413-0101075 , 11.886 , 11.556 , 11.524 , 0.33 , 0.032 , ('G6V', 0.97) , ('A1V',2.2)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
229024057 190.8506 -1.0188 0.0 12.927 10
229024656 190.8588 -1.005 57.8 12.684 10
229023760 190.8313 -1.0254 73.33 14.328 10epic_number,tm_name,ra,dec,k2_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
229024057,2MASS J12432413-0101075,190.850556,-1.018800,,1.163±0.488,0.992±0.109,12.927,-14.400,-7.400, 5.073e+02±2.260e+02
Re 228968947 from Ivan's and Hans Martin's lists: as mentioned, these do look like contaminating transits from another binary. The stellar estimate is for a small dwarf though, so perhaps two very small dwarfs in a dim 14.939 KepMag system also works and maybe with grazing eclipses.
s1=2744.1 p1=1.6485 d1=0.0825 (1.98 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)
228968947 , 2MASS J12243459-0203089 , 13.336 , 12.788 , 12.757 , 0.548 , 0.031 , ('K4V', 0.78) , ('A1V',2.2)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228968947 186.1441 -2.0525 0.02 14.939 10
228970917 186.1393 -2.0153 135.08 13.162 10epic_number,tm_name,ra,dec,k2_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228968947,2MASS J12243459-0203089,186.144109,-2.052502,,0.629±0.096,0.666±0.087,14.939,-30.900,-34.300, 4.202e+02±7.943e+01
Re 228935570 from Ivan's list: only two transit events, but maybe a 12.71Re transiting stellar object if a 1.058 R_sol star.
s1=2750.251 p1=5.16 d1=0.095 (2.28 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)
228935570 , 2MASS J12490645-0239028 , 10.041 , 9.719 , 9.639 , 0.322 , 0.08 , ('G5V', 0.98) , ('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
228935570 192.2769 -2.6508 0.0 11.162 10
228934822 192.2457 -2.6643 122.19 13.853 10
228935997 192.2401 -2.643 135.34 12.373 10epic_number,tm_name,ra,dec,k2_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228935570,2MASS J12490645-0239028,192.276885,-2.650782,,1.058±0.373,1.018±0.063,11.162,9.100,20.100, 2.217e+02±4.254e+01
Re 228929423 from Hans Martin's and Ivan's lists: only several transit events also, but as mentioned there are visible secondary eclipses so this target seems to be a binary.
s1=2752.646 p1=3.146 d1=0.08 (1.92 hours +/-)
s2=2751.073 p2=3.146 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)
228929423 , 2MASS J12464756-0245385 , 13.181 , 12.752 , 12.631 , 0.429 , 0.121 , ('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
228929423 191.6982 -2.7607 0.01 14.554 10epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
228929423,2MASS J12464756-0245385,191.698200,-2.760726,,,,14.554,-13.200,13.000,(Image not shown)
Re 228991609 from Ivan's and Hans Martin's lists: as mentioned, alternating stellar eclipses here with a transit depth ~4.95% in min corrected data.
s1=2747.51 p1=9.1225 d1=0.25 (6.0 hours +/-)
s2=2752.072 p2=9.1225 d2=0.25 (6.0 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)
228991609 , 2MASS J12302068-0138326 , 12.369 , 11.963 , 11.850 , 0.406 , 0.113 , ('K2V', 0.85) , ('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
228991609 187.5862 -1.6424 0.02 13.939 10
228993049 187.606 -1.6176 114.35 14.085 10
228992425 187.6202 -1.6281 132.91 12.817 10epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
228991609,2MASS J12302068-0138326,187.586162,-1.642388,,,,13.939,-11.700,-5.600,
Re 228980099 from Ivan's and Hans Martin's lists: appears to be binary with a transit depth of ~3.5%. Also if 0.979 R_sol the transiting object would be ~20.0Re.
s1=2744.51 p1=5.614 d1=0.1375 (3.3 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)
228980099 , 2MASS J12294436-0150551 , 14.308 , 13.995 , 13.941 , 0.313 , 0.054 , ('G6V', 0.97) , ('F4V',1.37)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228980099 187.4348 -1.8486 0.03 15.451 10
228980450 187.4208 -1.8421 55.49 12.452 10epic_number,tm_name,ra,dec,k2_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228980099,2MASS J12294436-0150551,187.434807,-1.848574,,0.979±0.402,0.862±0.074,15.451,-8.800,-8.200, 1.368e+03±5.263e+02
Re 228856435 from Ivan's list: appears to be a small dwarf binary with a transit depth of ~5.62%.
s1=2750.205 p1=1.32585 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)
228856435 , 2MASS J12405478-0425108 , 12.868 , 12.257 , 12.027 , 0.611 , 0.23 , ('K6V', 0.7) , ('M1V',0.52)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228856435 190.2283 -4.4197 0.0 15.245 10
228856836 190.2121 -4.4012 88.28 13.662 10
228856379 190.2015 -4.4222 96.72 12.348 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228856435,2MASS J12405478-0425108,190.228287,-4.419676,3639±73,0.291±0.033,0.305±0.048,15.245,-17.900,-11.300, 1.084e+02±1.489e+01
Re 228845657 from Ivan's list: this target looks like a blended, slightly eccentric binary. Also nearby 228845601 is on record as a RR Lyr type star.
s1=2751.77 p1=6.304 d1=0.12 (2.88 hours +/-)
s2=2754.73 p2=6.304 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)
228845657 , 2MASS J12235949-0452412 , 12.518 , 12.014 , 11.878 , 0.504 , 0.136 , ('K3V', 0.81) , ('K6V',0.7)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228845657 185.9979 -4.8781 0.02 14.040 10
228845601 185.987 -4.88 39.52 15.991 10
228845794 185.9763 -4.8713 81.37 13.139 10
228846178 185.9857 -4.8528 100.99 16.321 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228845657,2MASS J12235949-0452412,185.997890,-4.878110,,0.700±0.064,0.755±0.069,14.040,-35.400,-7.700, 3.167e+02±3.995e+01228845601 on VSX:
Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
0.66 CSS_J122356.9-045247 -- 12 23 56.90 -04 52 47.9 Vir RRAB 0.5445315 15.980 (0.85) CV228845601: 39.31 arcsecs away, [DCD2013] CSS J122356.9-045247 -- Variable Star of RR Lyr type on Simbad, 12 23 56.90 -04 52 47.9
Re 228772532 from Ivan's and Hans Martin's lists: another small dwarf binary with a transit depth here of ~31.74%.
s1=2743.40 p1=2.102 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)
228772532 , 2MASS J12091602-0756184 , 12.627 , 11.971 , 11.747 , 0.656 , 0.224 , ('M7V', 0.098) , ('M0V',0.58)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228772532 182.3168 -7.9384 0.0 14.947 10
228772567 182.3508 -7.9369 121.4 15.768 10
228772642 182.356 -7.9341 140.79 10.597 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228772532,2MASS J12091602-0756184,182.316788,-7.938431,3979±218,0.445±0.071,0.491±0.081,14.947,-1.900,-10.100, 1.653e+02±4.549e+01(Image not shown)
Re 228722026 from Hans Martin's and Ivan's lists: slightly eccentric small dwarf binary with alternating transit depths. And there seem to be lots of flares here also.
s1=2744.76 p1=6.6895 d1=0.12 (2.88 hours +/-)
s2=2748.08 p2=6.6895 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)
228722026 , 2MASS J12101290-1015103 , 12.811 , 12.173 , 11.916 , 0.638 , 0.257 , ('M8V', 0.082) , ('M4V',0.24)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228722026 182.5537 -10.2529 0.01 15.176 10epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
228722026,2MASS J12101290-1015103,182.553715,-10.252926,,,,15.176,-40.000,2.100,(image not shown)
Re 228707197 from Ivan's list: this nicely spotted small transit is also at the flux minima cycle so probably stellar, and maybe a faint secondary. Also could be a giant here per the large stellar radius range from Huber (see below).
s1=2751.595 p1=3.3707 d1=0.105833 (2.54 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)
228707197 , 2MASS J12314763-1100035 , 12.230 , 11.910 , 11.780 , 0.32 , 0.13 , ('G5V', 0.98) , ('K6V',0.7)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228707197 187.9485 -11.001 0.01 13.247 10
228707305 187.962 -10.995 52.29 12.259 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228707197,2MASS J12314763-1100035,187.948514,-11.000985,6327±280,1.362±4.936,0.855±0.164,13.247,-7.700,-2.200, 7.796e+02±2.313e+03
Re 201548063 from Hans Martin's and Ivan's lists: as mentioned this target appears to be a slightly eccentric binary, with small dwarfs too.
s1=2752.595 p1=16.5085 d1=0.15 (3.6 hours +/-)
s2=2743.90 p2=16.5085 d2=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)
201548063 , 2MASS J12230385+0115288 , 16.074 , 15.445 , 15.238 , 0.629 , 0.207 , ('K7V', 0.64) , ('M1V',0.52)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
201548063 185.7661 1.258 0.0 18.253 10
201547526 185.7376 1.25 106.23 12.011 10
201547376 185.7367 1.2475 112.23 15.207 10
201546766 185.7354 1.2377 132.35 15.774 10epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
201548063,2MASS J12230385+0115288,185.766051,1.258014,,,,18.253,,,(Image not shown)
Re 201153193 from Ivan's, Hans Martin's and JKD's lists: appears to be a binary with a secondary present and ~3.2% transit depth. And even though U-shaped, with the Huber value of 1.187 R_sol a transiting object might be ~23Re.
s1=2746.01 p1=5.388 d1=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)
201153193 , 2MASS J12124646-0513096 , 12.818 , 12.413 , 12.400 , 0.405 , 0.013 , ('K0V', 0.89) , ('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
201153193 183.1936 -5.2193 0.01 13.944 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
201153193,2MASS J12124646-0513096,183.193617,-5.219344,5665±135,1.187±0.975,0.846±0.077,13.944,-24.400,2.300, 8.354e+02±5.536e+02(Image not shown)
Re 201180665 from Ivan's and Hans Martin's lists: also appears to be a a binary with a primary transit depth of ~3.69%. 1.073 R_Sol might suggest a transiting object of ~22.48Re. And the nearby EPICs show no obvious sign of this transit.
s1=2753.493 p1=17.7774 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)
201180665 , 2MASS J12164075-0433371 , 12.008 , 11.686 , 11.650 , 0.322 , 0.036 , ('G5V', 0.98) , ('A3V',2.0)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
201180665 184.1698 -4.5604 0.02 13.080 10
201180783 184.1606 -4.5574 34.75 11.439 10
201180616 184.1878 -4.5619 64.83 14.415 10epic_number,tm_name,ra,dec,k2_teff,ExoFOP_rad,ExoFOP_mass,ExoFOP_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
201180665,2MASS J12164075-0433371,184.169809,-4.560360,5922±179,1.073±0.464,0.929±0.100,13.080,-28.200,-7.900, 5.022e+02±2.181e+02(Image not shown)
Re 201454397 from Ivan's, Hans Martin's and JKD's lists: sparse data, but could be a grazing binary with a primary transit depth of ~1.55% which is an estimated 16Re for a transiting object at 1.179 R_sol.
s1=2755.72 p1=12.596 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)
201454397 , 2MASS J12185069-0009232 , 10.442 , 10.164 , 10.062 , 0.278 , 0.102 , ('G1V', 1.07) , ('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
201454397 184.7113 -0.1565 0.01 11.523 10
201452603 184.7147 -0.182 92.67 12.647 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
201454397,2MASS J12185069-0009232,184.711301,-0.156532,6123±99,1.179±0.252,0.930±0.135,11.523,22.000,-58.600, 2.745e+02±6.321e+01(Image not shown)
Re 228730089 from Hans Martin's list: appears to be a binary with a transit depth of ~4.2% and a G-F type star.
s1=2747.115 p1=16.7325 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)
228730089 , 2MASS J12204384-0951409 , 11.622 , 11.289 , 11.230 , 0.333 , 0.059 , ('G6V', 0.97) , ('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
228730089 185.1827 -9.8614 0.01 12.729 10
228729996 185.1705 -9.8661 46.47 17.892 10
228730309 185.1698 -9.8508 59.46 14.903 10epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
228730089,2MASS J12204384-0951409,185.182697,-9.861378,,,,12.729,13.000,-1.900,(Image not shown)
Re 228734889 from Hans Martin's list: nice U-shaped transit, but fairly deep at 3.24% in MAST data which suggests a 23.47Re transiting object if a 1.194 R_sol star.
s1=2751.824 p1=48.254 d1=0.2292 (5.5 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)
228734889 , 2MASS J12331508-0937306 , 11.474 , 11.182 , 11.075 , 0.292 , 0.107 , ('G1V', 1.07) , ('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
228734889 188.3129 -9.6252 0.0 12.590 10
228735450 188.3295 -9.5988 112.06 14.918 10
228734570 188.3433 -9.6403 120.81 13.969 10
228734662 188.2752 -9.6364 139.62 13.151 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228734889,2MASS J12331508-0937306,188.312867,-9.625208,5949±146,1.194±0.322,1.027±0.116,12.590,-25.100,2.300, 4.458e+02±1.165e+02
Re 228798896 from Hans Martin's and Ivan's lists: this target does look like a binary as mentioned, perhaps with one or more heavily spotted stars.
s1=2753.05 p1=5.449 d1=0.30 (7.2 hours +/-)
s2=2755.774 p2=5.449 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)
228798896 , 2MASS J12232783-0649416 , 12.041 , 11.542 , 11.378 , 0.499 , 0.164 , ('K3V', 0.81) , ('K6V',0.7)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228798896 185.866 -6.8282 0.0 13.834 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228798896,2MASS J12232783-0649416,185.865952,-6.828219,4820±120,2.857±3.965,0.919±0.162,13.834,-8.500,-7.000, 1.079e+03±1.450e+03
Re 228865263 from Hans Martin's list: very eccentric binary in this light curve best seen in minimally corrected data as shown here.
s1=2777.46 p1=15.286 d1=0.15 (3.6 hours +/-)
s2=2750.07 p2=15.286 d2=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)
228865263 , 2MASS J12302080-0403047 , 13.407 , 12.875 , 12.750 , 0.532 , 0.125 , ('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
228865263 187.5867 -4.0513 0.02 15.030 10
228865343 187.5759 -4.0475 41.14 10.895 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228865263,2MASS J12302080-0403047,187.586690,-4.051342,4831±116,4.867±20.383(?),0.827±0.133,15.030,-2.800,-0.700, 3.726e+03±1.491e+04
Re 229007685 from Hans Martin's and Ivan's lists: U-shaped as mentioned, but an average 4% transit depth in MAST data yield a possible object of ~20.6Re if a 0.939 R_sol star. Also there is similar-in-size nearby visual companion as seen in Aladin Lite.
s1=2756.1 p1=14.015 d1=0.25 (6.0 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)
229007685 , 2MASS J12334407-0121148 , 14.733 , 14.374 , 14.257 , 0.359 , 0.117 , ('G8V', 0.94) , ('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
229007685 188.4336 -1.3542 0.01 15.752 10
229009341 188.4344 -1.3243 107.59 13.384 10epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
229007685,2MASS J12334407-0121148,188.433607,-1.354196,5725±336,0.939±0.774,0.852±0.077,15.752,-2.200,-5.300, 1.541e+03±1.191e+03(Image not shown)
Re 228961884 from Ivan's and Hans Martin's lists: appears to be a fast rotating and flaring, small dwarf binary system with a transit depth greater than 6%.
s1=2743.86 p1=0.696 d1=0.05 (1.2 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)
228961884 , 2MASS J12244489-0210588 , 13.226 , 12.668 , 12.412 , 0.558 , 0.256 , ('K4V', 0.78) , ('M4V',0.24)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228961884 186.1871 -2.183 0.02 15.331 10
228963669 186.1788 -2.1497 123.7 15.539 10
228963915 186.1999 -2.1449 144.81 14.691 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228961884,2MASS J12244489-0210588,186.187068,-2.183018,3564±155,0.258±0.038,0.259±0.051,15.331,18.000,4.000, 1.120e+02±2.366e+01(Image not shown)
Re 228954821 from Ivan's and Hans Martin's lists: V-shaped and appears binary with a ~6.4% transit depth in the MAST data.
s1=2745.65 p1=2.8841 d1=0.0767 (1.84 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)
228954821 , 2MASS J12413634-0218237 , 11.719 , 11.122 , 10.882 , 0.597 , 0.24 , ('K5V', 0.75) , ('M2V',0.5)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228954821 190.4015 -2.3066 0.02 14.444 10
228956123 190.3828 -2.2828 108.85 15.799 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228954821,2MASS J12413634-0218237,190.401463,-2.306612,3684±72,0.304±0.046,0.327±0.057,14.444,19.200,13.000, 7.357e+01±6.411e+00(Image not shown)
Re 228709764 from our c10 list: possible short period binary with a primary depth of ~3.5%.
s1=2780.457 p1=0.76081 d1=0.08 (1.92 hours +/-)
s2=2780.079 p2=0.76081 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)
228709764 , 2MASS J12304840-1052121 , 13.296 , 12.648 , 12.414 , 0.648 , 0.234 , ('M7V', 0.098) , ('M1V',0.52)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228709764 187.7017 -10.87 0.0 15.623 10
228709092 187.6873 -10.9051 136.19 17.105 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228709764,2MASS J12304840-1052121,187.701675,-10.870041,3880±190,0.400±0.087,0.450±0.113,15.623,18.000,-22.000, 1.959e+02±4.742e+01
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ajamyajax
Re 201496916 from JKD's list: this target appears to be a small dwarf, 0.331 R_sol and very dim at 17.724 kepler magnitude so not much chance it is contaminating other systems. The much brighter neighbor 201497361 (45 arcsecs away) shows only glitch-looking events at a similar time, but not transit-like the event spotted for this target. But is it a transiting object here? Don't know, could be. Certainly more difficult to be sure if in a glitch area. Maybe something very long period could work though.
s1=2799.59 p1=? d1=0.3875 (9.3 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)
201496916 , 2MASS J12165576+0028343 , 15.575 , 15.021 , 14.748 , 0.554 , 0.273 , ('K4V', 0.78) , ('M3V',0.4)
201497361 , 2MASS J12165828+0028596 , 11.714 , 11.470 , 11.421 , 0.244 , 0.049 , ('F9V', 1.14) , ('F1V',1.5)Semi-Major Axis a (A.U.) = 1.682
Stellar diameter ratio = 0.331
Stellar mass ratio = 0.36
Period ~= 1327.601 days
Duration ~= 9.3002 hoursFor Reference this period ~= 3.63 years
Jupiter P=11.8 years, 5.20 AU
Saturn P=29.5 years, 9.54 AU
Neptune P=165 years, 30.06 AUFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
201496916 184.2323 0.4762 0.0 17.724 10
201497361 184.2428 0.4833 45.45 12.686 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
201496916,2MASS J12165576+0028343,184.232346,0.476214,3833±686,0.331±0.235,0.360±0.238,17.724,,, 4.843e+02±4.793e+02
201497361,2MASS J12165828+0028596,184.242831,0.483251,6234±206,1.344±0.221,1.095±0.203,12.686,3.400,-14.200, 5.835e+02±1.129e+02Listed as SDSS J121655.76+002834.4 -- Star on Simbad, Spectral type: M0V, 12 16 55.761 +00 28 34.40
Program GO12042, PI Gizis, Title Ultracool Dwarfs: Clouds, Flares, and Exoplanets: Campaigns 11,12,13
PI: Gizis, John E. (University of Delaware)
CoIs: Schmidt, Sarah Jane; Paudel, Rishi R; Williams, Peter K G; Burgasser, Adam J"We propose to observe nearby ultracool dwarfs using the Kepler K2 mission to characterize their cloud/weather properties, measure their flare rates, and detect their planetary companions. Like gas giant planets, very-low-mass stars and brown dwarfs form condensate clouds in their atmospheres. K2 can uniquely characterize variability due to these clouds, both rotation modulation on a timescale of hours and weather evolution of the clouds on timescales from days to months. Magnetic activity changes dramatically at the stellar/substellar hydrogen-burning limits, but some ultracool dwarfs are known to flare. We will measure the white light flare rate in well-defined statistical samples as a function of effective temperature, rotation rate, and age. Flares are tied to magnetic reconnection rates and the energy budget. We also aim to detect transiting exoplanets by continuing to monitor each available ultracool dwarf in K2 campaigns; brown dwarfs, gas giants, and even large rocky planets are detectable. The K2 targets include nearby field late-M and L dwarfs."
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ajamyajax
Re 228888935 from Ivan's and Hans Martin's lists: possible inflated hot Jupiter orbiting a late main sequence subgiant, meaning the transit duration and period suggest the star is larger in radius than what is currently on record. And speculative but maybe limb darkening as well. And as mentioned by Ivan there is also some sign of another PC transit around 2772.3 BKJD, but we should check again with more corrected data. Edit: and this fit is with tpf center pixels.
s1=2745.97 p1=5.692 d1=0.17417 (4.18 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)
228888935 , 2MASS J12254758-0328093 , 12.901 , 12.497 , 12.402 , 0.404 , 0.095 , ('K0V', 0.89) , ('K1V',0.86)Semi-Major Axis a (A.U.) = 0.059
Stellar diameter ratio = 1.22
Stellar mass ratio = 0.85
Period ~= 5.692 days
Duration ~= 4.182 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228888935 186.4483 -3.4693 0.0 14.103 10
228887853 186.4857 -3.487 148.75 18.279 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228888935,2MASS J12254758-0328093,186.448272,-3.469305,5451±130,0.814±0.197,0.843±0.101,14.103,-21.200,-9.300, 5.220e+02±1.539e+02Proposals GO10033_LC, GO10077_LC:
GO10033 Burke K2 Exoplanet Ecliptic Survey - KEES
GO10077 Howard The Masses and Prevalence of Small Planets with K2 - Cycle 3
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JKD
EPIC 201505427, promising signal, P= ?, S= 2788.43 BKJD, Duration ~4.90 hrs, Depth ~0.3 %
EPIC 201508239, P=? , S= 2810.11 BKJD, Duration ~10.29 hrs, Depth ~1.3 %
EPIC 201510813 is an EB with P= ?, S= 2802.01 BKJD, Duration ~5.88 hrs, Depth ~14. %
EPIC 201514729 nice U-shaped signal in a possible glitch area. S= 2784.81 BKJD, Duration ~2.94 hrs, Depth ~0.08%.
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ajamyajax
Re 228809550 from Ivan's and Hans Martin's lists: this K-dwarf target could host a possible sub-Saturn to Saturn planet candidate. MAST data used for this fit.
s1=2746.995 p1=4.0021 d1=0.09375 (2.25 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)
228809550 , 2MASS J12242051-0622439 , 13.492 , 13.097 , 12.947 , 0.395 , 0.15 , ('K0V', 0.89) , ('K5V',0.75)Semi-Major Axis a (A.U.) = 0.045
Stellar diameter ratio = 0.71
Stellar mass ratio = 0.754
Period ~= 4.002 days
Duration ~= 2.2524 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228809550 186.0854 -6.3789 0.01 14.665 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228809550,2MASS J12242051-0622439,186.085401,-6.378884,5224±160,0.762±0.079,0.795±0.086,14.665,-17.800,-13.600, 6.084e+02±8.245e+01
Posted
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ajamyajax
Re 228797006 from Ivan's list: this 15.946 Kepmag target has a transit depth of ~2.34% in MAST (2.56% in center pixel data) but still has a chance to be a gas giant planet candidate at 0.75 R_sol or smaller. Huber has a much smaller dwarf value of 0.316 R_sol though, so also a chance here for two of those instead.
s1=2743.548 p1=0.80083 d1=0.05833 (1.4 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)
228797006 , 2MASS J12132808-0654192 , 14.298 , 13.786 , 13.630 , 0.512 , 0.156 , ('K3V', 0.81) , ('K6V',0.7)Semi-Major Axis a (A.U.) = 0.015
Stellar diameter ratio = 0.75
Stellar mass ratio = 0.739
Period ~= 0.804 days
Duration ~= 1.4029 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228797006 183.367 -6.9053 0.0 15.946 10
201089429 183.3512 -6.8927 72.63 13.342 10
201089857 183.3485 -6.8814 108.7 13.498 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228797006,2MASS J12132808-0654192,183.367004,-6.905337,3775±822,0.316±0.177,0.347±0.209,15.946,-38.000,34.000, 2.293e+02±2.324e+02
Posted
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Dolorous_Edd
just for lulz
EPIC 228809550
PanSTARRS image 1'x1'
there is a clear object ot left
Posted
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ajamyajax
in response to Dolorous_Edd's comment.
These images are awesome.
Posted
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ajamyajax
Re 228707509 from Ivan's and Hans Martin's lists: this U-shaped transit seems a bit large for a PC if the star around 0.85 R_sol, but could be another brown dwarf candidate. Also another transit set not easily seen in MAST data with a similar period (that one was 15.78), so maybe a coincidence but transits outside the center pixels or systematics should also be considered.
s1=2752.508 p1=15.352 d1=0.1792 (4.3 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)
228707509 , 2MASS J12292585-1059060 , 13.650 , 13.221 , 13.134 , 0.429 , 0.087 , ('K1V', 0.86) , ('G8V',0.94)Semi-Major Axis a (A.U.) = 0.108
Stellar diameter ratio = 0.85
Stellar mass ratio = 0.713
Period ~= 15.353 days
Duration ~= 4.3006 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228707509 187.3577 -10.985 0.02 14.806 10
228707132 187.3662 -11.004 74.62 15.213 10
228706919 187.3478 -11.0143 110.94 13.588 10epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
228707509,2MASS J12292585-1059060,187.357671,-10.985021,5312±108,0.789±1.715,0.815±0.096,14.806,-9.300,-15.200, 7.082e+02±1.418e+03
Posted
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ajamyajax
Re 201581953 from Ivan's and Hans Martin's lists: a complicated target here, but there appears to be two distinct transits that indicate a possible MPC, a small M-dwarf circumbinary or trinary, a blend from several transit sources, or even just glitches..
The first two scenarios seem to be supported by the stellar data, and a circumbinary is my guess based on the depth of the primary transit and the colors. A possible 1:3 orbital resonance also helps the multi-object cause a bit. So hopefully this intriguing target will get some follow-up observations.
Edit: correction: this looks like an eccentric binary now where some of the MAST secondary transits are blended in.
s1=2747.97 p1=8.1875 d1=0.09167 (2.2 hours +/-)
s2=2754.10 p2=24.54 d2=0.1321 (3.17 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)
201581953 , 2MASS J12143758+0145506 , 13.808 , 13.210 , 13.063 , 0.598 , 0.147 , ('K5V', 0.75) , ('K5V',0.75)Semi-Major Axis a (A.U.) = 0.065
Stellar diameter ratio = 0.494
Stellar mass ratio = 0.557
Period ~= 8.185 days
Duration ~= 2.2006 hoursSemi-Major Axis a (A.U.) = 0.136
Stellar diameter ratio = 0.494
Stellar mass ratio = 0.557
Period ~= 24.546 days
Duration ~= 3.1733 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
201581953 183.6565 1.764 0.01 15.682 10
201581536 183.6368 1.7579 74.07 16.960 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
201581953,2MASS J12143758+0145506,183.656492,1.764008,4206±470,0.494±0.156,0.558±0.183,15.682,-13.200,-27.800, 4.270e+00±4.250e+00Program GO10031 Guzik Statistics of Variability in Main-Sequence Stars of Kepler 2 Fields 8 and 10
Posted
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JKD
EPIC 201543039, maybe a PC with a signal at S= 2810.027 BKJD, P= ?, Duration ~5.88 hrs, Depth ~0.3%
EPIC 201581953, IMO it is an EB with P~8.18 d
Posted
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ajamyajax
in response to Dolorous_Edd's comment.
Re: object to the left
well, fyi and fwiw but I looked at the first half dozen targets in the K2 confirmed planets table on Aladin Lite, and seems like they all have visual neighbors that are fairly close.
(pressed Search with no EPIC to get the list here)
https://archive.stsci.edu/k2/published_planets/search.php
When I get the time will have to look for more on these.
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ajamyajax
Re 201091593 from Hans Martin's and Ivan's lists: appears to be TTV here for one visible object, so maybe something else is close by.. Hopefully it's a high-impact planet. The current LC's are fairly ragged though, so will check again with more corrected data. Also could be an evolving star host based on Huber's stellar values.
s1=2750.102 p1=2.916 d1=0.08667 (2.08 hours +/-)
ttv1 = [2750.102,2753.014,2755.945,2758.85,2761.766,2764.682,2767.598,2770.514,2773.457,2776.367,2779.29,2782.2,2785.132,2788.039,2790.954,2793.856,2796.788,2799.697,2802.61,2805.51,2808.443,2811.345,2814.267,2817.169]
ttv1_gaps = [2758.85,2761.766,2764.682,2767.598,2770.514]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)
201091593 , 2MASS J12124712-0649599 , 10.818 , 10.527 , 10.445 , 0.291 , 0.082 , ('G1V', 1.07) , ('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
201091593 183.1963 -6.8333 0.02 11.855 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
201091593,2MASS J12124712-0649599,183.196344,-6.833333,5966±121,1.439±0.398,1.055±0.145,11.855,-1.200,-21.100, 4.744e+02±2.240e+02Listed as TYC 4946-386-1 -- Star on Simbad, Proper motions mas/yr: -1.2 -21.1, 12 12 47.122 -06 50 00.00
Programs:
GO10032 Mullally Discovery and Vetting of K2 Exoplanets
GO10077 Howard The Masses and Prevalence of Small Planets with K2 - Cycle 3
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ajamyajax
Re 201127519 from Hans Martin's and JKD's lists: could be another nice Saturn class planet candidate with a K-dwarf target. And best seen in MAST data so far anyway, perhaps because they masked out the light from the bright visual neighbors shown in the Aladin Lite image below. Also a system that is fairly close based on the high proper motions.
s1=2752.55 p1=6.178 d1=0.11875 (2.85 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)
201127519 , 2MASS J12052929-0550531 , 10.014 , 9.569 , 9.430 , 0.445 , 0.139 , ('K3V', 0.81) , ('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
201127519 181.3721 -5.8481 0.02 11.558 10Semi-Major Axis a (A.U.) = 0.06
Stellar diameter ratio = 0.784
Stellar mass ratio = 0.772
Period ~= 6.171 days
Duration ~= 2.8508 hoursepic_number,tm_name,ra,dec,k2_teff,ExoFOP_rad,ExoFOP_mass,ExoFOP_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
201127519,2MASS J12052929-0550531,181.372066,-5.848084,4738±169,0.714±0.047,0.784±0.048,11.558,-60.600,-45.300, 1.039e+02±1.002e+01Listed as UCAC2 29839009 -- Star on Simbad, Proper motions mas/yr: -60.6 -45.3, 12 05 29.296 -05 50 53.10
And 85.99 to 1.43 arcsecs away is V* OX Vir -- Semi-regular pulsating Star (bright red giant)
From VSX:
Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range
1.43 OX Vir 000-BFP-663 12 05 35.04 -05 50 45.2 Vir SRS: -- 6.64 - 6.75 VType SRS: "Semi-regular pulsating red giants with short periods (several days to a month), probably high-overtone pulsators."
Posted
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ajamyajax
Re 228754001 from Hans Martin's and Ivan's lists: and a possible gas giant planet candidate even considering a giant or subgiant star according to Huber, although possibly a Saturn near the lower end of that range if around 2.27 R_sol (3.628 shown). And this fits reasonably well in the MAST and raw cadence data, but should try this again with more corrected data.
s1=2757.236 p1=9.162 d1=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)
228754001 , 2MASS J12083992-0844497 , 10.153 , 9.637 , 9.540 , 0.516 , 0.097 , ('K3V', 0.81) , ('K1V',0.86)Semi-Major Axis a (A.U.) = 0.088
Stellar diameter ratio = 2.27
Stellar mass ratio = 1.087
Period ~= 9.161 days
Duration ~= 8.4012 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228754001 182.1664 -8.7472 0.01 11.651 10
228754209 182.1299 -8.7374 134.69 15.102 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228754001,2MASS J12083992-0844497,182.166393,-8.747175,4884±78,3.628±1.818,1.081±0.159,11.651,-28.600,-4.300, 5.806e+02±2.715e+02
Posted
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ajamyajax
Re 229068853 and 229068743 from Ivan's and Hans Martin's lists: appears to be a hierarchical system where these K2 targets seem bound with similar proper motions. Their light curves are also similar and show the same eccentric binary transits. A third star (listed on Simbad) could also be visible in the Aladin Lite image shown below.
s1=2749.66 p1=0.798778 d1=0.068 (1.64 hours +/-)
s2=2750.125 p2=0.798778 d2=0.20 (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)
229068853 , 2MASS J12430917+0000000 , 9.565 , 9.212 , 9.116 , 0.353 , 0.096 , ('G8V', 0.94) , ('K1V',0.86)
229068743 , 2MASS J12431002-0000082 , 9.214 , 9.013 , 8.970 , 0.201 , 0.043 , ('F6V', 1.25) , ('A8V',1.67)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
229068853 190.7883 -0.0 0.03 10.519 10
229068743 190.7917 -0.0023 15.01 10.158 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
229068853,2MASS J12430917+0000000,190.788261,-0.000007,5616±264,1.628±0.721,1.016±0.209,10.519,-21.900,-21.000, 2.433e+02±1.151e+02
229068743,2MASS J12431002-0000082,190.791743,-0.002293,6336±227,1.579±0.581,1.305±0.174,10.158,-24.300,-21.000, 2.222e+02±7.577e+01229068853 listed as TYC 290-1109-1 -- Star on Simbad, 12 43 09.183 -00 00 00.03
Also as BD+00 2976B -- Star in double system, Proper motions mas/yr: -24.0 -23.0, Spectral type: G, 12 43 09.165 -00 00 00.39And in between at 4.60 arcsecs is MGC 36632 -- Star, 12 43 09.18 -00 00 04.6 ...
229068743 listed as TYC 4949-427-1 -- Star on Simbad, Proper motions mas/yr: -24.3 -21.0, 12 43 10.018 -00 00 08.26
Also as BD+00 2976 -- Star, Proper motions mas/yr: -16.5 -25.0, Spectral type: F8, 12 43 10.052 -00 00 08.76229068853 Programs: GO10031, GO10032, GO10051, GO10077
229068743 Programs: GO10028, GO10050, GO10051, GO10059, GO10068, GO10077
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ajamyajax
Re 228846243 from Hans Martin's and Ivan's lists: only two transit events, but another possible Saturn or larger planet candidate with a 1.68+ R_sol late main sequence star.
s1=2782.49 p1=25.55 d1=0.37 (8.88 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)
228846243 , 2MASS J12340661-0450597 , 13.182 , 12.792 , 12.679 , 0.39 , 0.113 , ('K0V', 0.89) , ('K3V',0.81)Semi-Major Axis a (A.U.) = 0.172
Stellar diameter ratio = 1.68
Stellar mass ratio = 1.04
Period ~= 25.549 days
Duration ~= 8.8818 hoursFrom NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228846243 188.5275 -4.8499 0.01 14.505 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228846243,2MASS J12340661-0450597,188.527529,-4.849938,5517±130,1.839±0.304,1.059±0.096,14.505,-4.700,-6.300, 1.378e+03±1.800e+02
Posted
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ajamyajax
HD 106315/EPIC 201437844:
"A Multi-Planet System Transiting the V = 9 Rapidly Rotating F-Star HD 106315"
Joseph E. Rodriguez, George Zhou, Andrew Vanderburg, Jason D. Eastman, Laura Kreidberg, Phillip A. Cargile, Allyson Bieryla, David W. Latham, Jonathan Irwin, Michael L. Calkins, Gilbert A. Esquerdo, Jessica Mink
https://arxiv.org/abs/1701.03807
Posted
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zoo3hans
in response to ajamyajax's comment.
Yes! We got already the first confirmation. Cool.
Posted
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by
JKD
EPIC 201437844
Great job of the PH community.
Congratulation also to DE and zoo3hansPosted
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ajamyajax
Re 201087168 from Hans Martin's and Ivan's lists: and spotted by Hans Martin from Andrew's c10 corrected software and with Al's assistance with the data (thank you). And only two transit events visible in this LC, but possibly a sub-Neptune planet candidate +/- with a larger giant or subgiant star of 2.243 R_sol per Huber. Although an F to A type also possible. And note fairly high proper motion values here.
s1=2750.52 p1=52.14 d1=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)
201087168 , 2MASS J12122221-0657199 , 9.423 , 9.109 , 9.077 , 0.314 , 0.032 , ('G6V', 0.97) , ('A1V',2.2)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
201087168 183.0926 -6.9555 0.01 10.371 10
201086703 183.1098 -6.9687 77.64 14.797 10
201088502 183.1001 -6.9179 138.33 17.026 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
201087168,2MASS J12122221-0657199,183.092594,-6.955544,6035±144,2.243±0.547,1.332±0.227,10.371,-45.100,-13.800, 5.022e+02±1.960e+02Listed as TYC 4946-249-1 -- Star on Simbad, Proper motions mas/yr: -39.20 -17.60, 12 12 22.2268 -06 57 20.030
Posted
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ajamyajax
Re 201132684 from Hans Martin's list: and appears to be a fine four-planet MPC in a beautiful resonance as observed by Hans Martin with nearly all the ephemeris as listed. Also note a G-type star just a bit smaller and cooler than our Sun. And the nearby EPIC's have a few similar near transit-like events but they are few in number so could easily be coincidental based on the number of transits seen here.
s1=2745.0 p1=5.899 d1=0.124167 (2.98 hours +/-)
s2=2746.30 p2=25.505 d2=0.202083 (4.85 hours +/-)
s3=2747.41 p3=10.0638 d3=0.14833 (3.56 hours +/-)
s4=2797.91 p4=385.931 d4=0.50 (12 hours +/- and possibly in the HZ) <-- editedNote the fourth possible transit event is between the P=25.5x and P=5.90x objects in this time series, so the duration shown is only what is visible and could be longer, if genuine. The extension of the nearby transit events (as shown) suggests that is probably the case, and could enhance its authenticity.
Semi-Major Axis a (A.U.) = 0.062
Stellar diameter ratio = 0.876
Stellar mass ratio = 0.903
Period ~= 5.891 days
Duration ~= 2.9768 hoursSemi-Major Axis a (A.U.) = 0.164
Stellar diameter ratio = 0.876
Stellar mass ratio = 0.903
Period ~= 25.505 days
Duration ~= 4.8517 hoursSemi-Major Axis a (A.U.) = 0.088
Stellar diameter ratio = 0.876
Stellar mass ratio = 0.903
Period ~= 10.068 days
Duration ~= 3.5591 hoursSemi-Major Axis a (A.U.) = 1.003
Radius (R_Sun) = 0.876
Mass (M_Sun)= 0.903
Period ~= 385.931 days
Duration ~= 12.0002 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)
201132684 , 2MASS J11594560-0543182 , 10.432 , 10.051 , 9.974 , 0.381 , 0.077 , ('G9V', 0.91) , ('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
201132684 179.94 -5.7217 0.01 11.678 10
201132469 179.9252 -5.7276 57.12 14.935 10
201133000 179.9653 -5.7141 94.54 15.064 10
201132721 179.9816 -5.7208 149.24 11.942 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
201132684,2MASS J11594560-0543182,179.939989,-5.721709,5549±89,0.876±0.070,0.903±0.090,11.678,-59.000,12.100, 1.795e+02±2.765e+01
Posted
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by
Dolorous_Edd
PC
228739306 - maybe PC ; period ~7.176
229143748 - 2 dips ~39d apart; 2747.22 and 2786.5
229133720 - period 4.035
229112475 - 2 dips ~20.197d apart
229103251 - period ~11.665; i.e. see 2803.39
229090328 - period ~16.770; ~1% depth; maybe additional dip at 2776.79
229044794 - maybe dips with ~17.5d period, start at 2776.7
229039773 - maybe dips at 2751.54 and 2751.54, 2751.54; period ~17.15
229021605 - mentioned by Hans, maybe second dip at 2771.55, secondary? doubful dip at 2753.13
229019129 - same as 229019101, maybe contamination
229019101 - period 18.067, maybe eccentric EB instead
229004835 - mentioned by Hans, maybe additional PC see 2780.40
228992395 - maybe single dip at 2788.57
228969378 - period ~11d
228935286 - maybe MPC? p1 - for example ~ 10.859 see 2784.91; additional dips at 2788.58 ; 2809.0
228934525 - MPC! period p1 = 3.676 , period p2 = 7.955
228859495 - maybe MPC ; dips at 2753.1,2772.85; 2776.74; 2778.69; 2778.69; 2788.57; 2806.13; 2806.13
228855975 - maybe 2 dips ; 2776.80 and 2794.38
228849382 - period ~12.111d ; see 2793.97
228846243 - 2 transits with ~25.5d period ; mentioned by Hans
228830343 - maybe 2 transits ; 2788.58 and 2809.06
228814761 - 2 transits with 58.752; start at 2745.11
228814754 - period ~0.844, maybe EB contamination
228809391 - 2 transits , period ~19,5d; start at 2783.3
228801451 - Possible MPC! ; period p1 = 8.334 ; start 2745 ; period p2 = 0.584 ; , see 2772.67 and 2773.26, additional dips: 2790.04 and 2794.96; perhaps ~3 PC
228798746 - period ~2.7; see 2801.46; depth 0.0003%
228796240 - period ~7.555 ; see 2754.2
228784080 - period 10.982; start at 2752.52
228766926 - maybe PC; see 2809.0 and 2813.79
228758948 - period 12.194, maybe MPC? see 2783.56;
228758778 - period 18.583 ; see 2774.6 ; 2793.27 ; 2811.86
228753871 - period ~18.685; see 2795.12
228734900 - period 15.886
228729473 - 3 transits; maybe contamination, I mean duration is kind of off for observed period ; period 16.774
228729372 - 2 transits ; 2776.724 and 2813.74; period ~37d
228725972 - p 10.104d, maybe second set of dips at 4.481period see 2806.5, possible MPC
228724899
228721452 - maybe transits with 4.562d period ; see 2781.91
228720772 - maybe transits see 2809.08 for example
201528828 - period 14.088
201427874 - period 6.674
201357835 - period 11.891d, additional dips at 2788.57 , 2790.27, 2806.22 .. maybe mpc
201299088 - 2 transits, period ~21d
201269489 - possible MPC
201262663 - period 11.325
201227197 - period 3.707? contamination?
201227100 - period 3.707
201225286 - period 12.418
201222789 - dip at 2777.08
201211526 - period 21.117
201195734 - possible MPC!
EB
229158131 - third body at 2780.43? (in the glith area, though)
228998397 - possible HB?
228954821 - maybe additional dip at 2748.35
228920214 - EB , maybe third object at 2743.77 and 2756.28 and 2756.28?
228861024 - regular variable , HB?
228798896 - maybe period 5.459; see 2785.68
228793047 - dip at 2777.07
228755416 - EB mentioned by Hans, but is there something lurking in there? see 2748.36, 2783.3
228891397 - looks interesting at 2780.08; in MAST data looks like nice, deep transit
228770322 - maybe HB
201583950 - dip at 2751.36
201486386 - dip at 2750.76
201225735 - dips at 2805.52 and 2813.76
Other
229003104 - maybe dips at 2788.57 and 2809.0
229003054 - multiple dips, likely contamination
228980940 - maybe dips at 2784.92 and 2809.06
228952494 - maybe dips at 2818.149; 2809.07
228940058 - maybe 3 transits ; 2756.20 ; 2778.64; 2814.74
228936831 - maybe dip at 2754.8
228933769 - maybe dip 2780.43; maybe period ~9.934
228932324 - maybe dip at 2784.13
228911024 - maybe dip at 2809.07
228893062 - maybe dip at 2748.35
228884333 - maybe dip at 2788.5
228882827 - maybe PC dips at 2785.407 ; 2809.077
228882820 - maybe dip at 2774.354
228875644 - maybe dips at 2777.1 and 2780.074
228870731 - maybe PC dips at 2747.71; 2750.47; 2784.9; 2794.356; 2813.6; 2817.4
228919410 - maybe dip at 2751.368
228864540 - maybe dip at 2797.646; 2797.646;
228863524 - maybe dip at 2748.34
228860035 - maybe dip at 2782.11
228859854 - maybe dip at 2812.29
228858734 - maybe dip at 2784.04
228858120 - maybe dip at 2784.98
228845696 - maybe dip at 2809.067
228845163 - maybe dip at 2747.12
228819506 - maybe dip at 2809.97
228818167 - maybe dips 2746.53; 2748.40 ; 2817.49; 2818.20
228809544 - dip at 2777.0
228804202 - dip at 2790.4
228796212 - why such rise at 2809?
228793511 - dip at 2800.10
228792568 - maybe dip at 2775.71
228786689 - some dips
228784193 - some dips
228783885 - some dips
228774111 - maybe dips at 2788.58, 2809.07
228981419 - maybe dip at 2780.44
229141329 - dips at 2784.9 and 2809.0
229139102 - dip at 2809.0
229133911 - dip at 2778.88
229124708 - maybe dip at 2780.43
229108673 - maybe dips at 2774.8, 2784.95, 2809.0
229108365 - multiple dips?
229104863 - maybe dips at 2748.34 and 2803.3
229062208 - dip at 2792.8
229043837 - dip at 2777.0
229010537 - 2 dips at the beginning
229007709 - maybe dip at the end
229005060 - maybe dip at 2809.06
229001192 - maybe dip at 2748.32
228931741 - some dips here and there; i,e 2771.54 ; 2790.24; 2814.64, don't know how real they are
228857072 - maybe dips at 2773.81 and 2775.0
228846850 - Possible MPC , dips at 2753.196; 2776.734; 2778.69; 2778.685; 2806.15; 2778.685; 2812.05
228817292 - maybe dip at the end
228810202 - maybe dip at 2748.32
228759480 - some dips
228755322 - dip at 2813.286
228724790 - natural trend?
228723783 - maybe dip at 2781.19
228729736 - maybe some dips, see 2748.405, 2797.5,
228729500 - maybe dip at 2777.081
228726949 - dips at 2788.57, 2809.067
228724527 - dip at 2780.115
228721665 - 2813.735
228713475 - dip at 2777.14
228710844 - maybe dip at 2777.071
228710568 - dip at 2808.638
201589013 - 2777.07
201582015 - dips at 2775.54, 2788.58 ,2804.28
201544293 - dip at 2777.07
201538153 - dip at 2788.57
201504745 - maybe dips at 2775.395 and 2804.05
201485916 - maybe dips
201483687 - maybe dip at 2780.45
201460700 - maybe dip at 2771.60540
201444293 - *multiple dips
201300237 - dip at 2808.56
201297484 - doubtful dip at 2803.948
201274010 - dip at 2782.5
201268743 - maybe dip at 2749.426 and
201264724 - dip at 2771.5
201234090 - dip at 2776.723
201212689 - dip at 2790.198
201208098 - dips at 2788.59 and 2809.0
201208058 - 2753.14 and 2776.76
EPIC 201419619 - maybe dip at
EPIC 201364309 - maybe dip at 2794.39
Posted
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by
ajamyajax
Re 228725972 from Ivan's list: three short period transits observed and could be another nice MPC. Durations seem shorter than the Huber stellar estimates indicate they should be, so perhaps they are either high impact or somewhat blended in or the star is a more solar G-type as the colors here suggest. Also the nearby EPICs do not show any obvious sign of these transits.
s1=2745.30 p1=10.10 d1=0.173 (4.15 hours +/-)
s2=2748.16 p2=4.482 d2=0.125 (3.0 hours +/-)
s3=2746.3 p3=6.405 d3=0.14 (3.36 hours +/-)Semi-Major Axis a (A.U.) = 0.092
Stellar diameter ratio = 1.244
Stellar mass ratio = 1.012
Period ~= 10.099 days
Duration ~= 4.8707 hoursSemi-Major Axis a (A.U.) = 0.053
Stellar diameter ratio = 1.244
Stellar mass ratio = 1.012
Period ~= 4.48 days
Duration ~= 3.7149 hoursSemi-Major Axis a (A.U.) = 0.068
Stellar diameter ratio = 1.244
Stellar mass ratio = 1.012
Period ~= 6.396 days
Duration ~= 4.1828 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)
228725972 , 2MASS J12384898-1003384 , 11.352 , 11.029 , 10.940 , 0.323 , 0.089 , ('G5V', 0.98) , ('G9V',0.91)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228725972 189.7041 -10.0607 0.02 12.482 10
228725737 189.7126 -10.072 50.71 15.408 10
228726301 189.7173 -10.0444 74.99 12.864 10
228726416 189.7059 -10.0387 79.28 13.412 10
228725357 189.695 -10.0904 111.85 12.533 10
228726011 189.6705 -10.0582 119.29 11.610 10
228726684 189.7127 -10.025 132.05 14.757 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228725972,2MASS J12384898-1003384,189.704092,-10.060654,5846±172,1.244±0.608,1.012±0.133,12.482,11.800,11.400, 4.238e+02±1.865e+02
Posted
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by
ajamyajax
Re 228934525 from Ivan's list: and as mentioned by Ivan, looks like another MPC. These could be an uncommon find of two super-Earth planet candidates orbiting a 0.5x R_Sol M-dwarf, too. And the nearby EPIC does not shown any obvious sign of these transits.
s1=2751.335 p1=7.955 d1=0.10 (2.4 hours +/-)
s2=2752.05 p2=3.677 d2=0.077083 (1.85 hours +/-)Semi-Major Axis a (A.U.) = 0.064
Stellar diameter ratio = 0.54
Stellar mass ratio = 0.5446
Period ~= 7.957 days
Duration ~= 2.4009 hoursSemi-Major Axis a (A.U.) = 0.038
Stellar diameter ratio = 0.54
Stellar mass ratio = 0.5446
Period ~= 3.681 days
Duration ~= 1.8568 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)
228934525 , 2MASS J12360036-0240100 , 11.219 , 10.519 , 10.368 , 0.7 , 0.151 , ('M8V', 0.082) , ('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
228934525 189.0015 -2.6695 0.02 13.351 10
228934156 188.9992 -2.6759 24.51 14.677 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228934525,2MASS J12360036-0240100,189.001516,-2.669481,4004±95,0.462±0.034,0.524±0.042,13.351,5.800,-31.800, 1.124e+02±1.826e+01
Posted
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by
Dolorous_Edd
EPIC 228934525
UKIRT 1'x1' J-band
Skyview doesn't look bad also
Posted
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by
JKD
May be a glitch at ~2809 BKJD
EPIC 201441969
Single transit at S = 2809.06 BKJD, P = ?, Duration = 2.94 hrs, Depth ~0,06%EPIC 201456770
Single transit at S = 2809.08 BKJD, P = ?, Duration = 2.94 hrs, Depth ~0.1%Posted
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by
JKD
EPIC 201479221 - possibly a Corona(C) around an EB signal
Single EB-signal at S(EB) = 2787.36 BJD, P = ?, Duration = 10.79 hrs, Depth ~15.9 %
Around this signal there is another symmetric signal.
Corona-signal also centered at S(C) =2787.36 BKJD, P = ?, Duration = 116.2 hrs, Depth ~0.3%
Posted
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by
Shellface
in response to ajamyajax's comment.
EPIC 228809550: aja asked me to look at this system. It seems fairly straightforward, so I won't dwell on the fine details here.
This star is towards the faint end for K2, with V = 14.87 (Kep = 14.67). Its reddened spectral type is K0 ± 1 (~5275 ± 100 K), and the mild reddening towards the star indicates the de-reddened spectral type should be the same within errors. The modest proper motion of the star (fairly large, considering its distance) indicates the star is a dwarf, so its mass and radius are probably about 0.85 - 0.90 times the solar values.
I detrended the transit lightcurve as per usual, and fed it into EXOFAST with the above Teff as a prior. This was the output:
The companion radius is around 1.1 times that of Jupiter, which is about what is expected for a giant planet at T ≈ 1000 K. The transit shape is consistent with a planet at a somewhat high impact parameter (note the proportionally long ingress/egress), and the EXOFAST stellar parameters are consistent with a ~K0 dwarf. Thus, this is compatible with a Hot Jupiter, one which is somewhat cooler than typical representatives of the group.
The faintness of the star makes this a less attractive target for followup, but RV mass measurement should still be possible. If not, statistical validation is viable, and this looks convincingly planetary in that regard.
Posted
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by
JKD
EPIC 201589013 - single transit at S = 2777.07 BKJD, P = ?, Duration = 2.92 hrs, Depth ~4.7% (already mentioned by DE)
EPIC 228705867 - maybe a part of a signal centered at S ~ 2743.3-x BKJD, P = ?, Duration > 7 hrs, Depth > 0,38%
Posted
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by
Dolorous_Edd
EPIC 228891397
MAST , SAP flux (PDC looks the same)
long period EB, IMO
Posted
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by
ajamyajax
Re 201166680 from Hans Martin's list: could be three or more planet candidates blended into this F-type target's light curve that could be as large as the Huber values. The nearby EPIC could be an evolved giant at 39.921 R_sol and a forecast of our own Sun's evolution at 0.948 M_sol.
s1=2751.50 p1=24.95 d1=0.252 (6.05 hours +/-)
s2=2748.68 p2=11.54 d2=0.171 (4.1 hours +/-)
s3=2747.82 p3=6.92 d3=0.156 (3.75 hours +/-)Semi-Major Axis a (A.U.) = 0.17
Radius (R_Sun) = 1.16
Mass (M_Sun)= 1.058
Period ~= 24.956 days
Duration ~= 6.0501 hoursSemi-Major Axis a (A.U.) = 0.102
Radius (R_Sun) = 1.16
Mass (M_Sun)= 1.058
Period ~= 11.534 days
Duration ~= 4.6777 hoursSemi-Major Axis a (A.U.) = 0.072
Radius (R_Sun) = 1.16
Mass (M_Sun)= 1.058
Period ~= 6.918 days
Duration ~= 3.9448 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)
201166680 , 2MASS J12042913-0453572 , 9.852 , 9.637 , 9.591 , 0.215 , 0.046 , ('F7V', 1.21) , ('F0V',1.58)
201167090 , 2MASS J12042911-0453198 , 9.311 , 8.583 , 8.428 , 0.728 , 0.155 , ('M8V', 0.082) , ('K6V',0.7)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
201166680 181.1214 -4.8992 0.02 10.897 10
201167090 181.1214 -4.8888 37.34 11.198 10
201165854 181.1213 -4.918 67.62 13.299 10
201167869 181.1085 -4.8701 114.35 13.726 10
201165665 181.0974 -4.9225 120.08 9.592 10epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
201166680,2MASS J12042913-0453572,181.121405,-4.899185,6714±159,1.392±0.180,1.293±0.185,10.897,-62.300,25.900, 2.378e+02±3.575e+01
201167090,2MASS J12042911-0453198,181.121406,-4.888814,4163±84,39.921±5.809,0.948±0.038,11.198,-12.100,11.800, 3.293e+03±4.361e+02Listed as TYC 4942-667-1 -- Star on Simbad, Proper motions mas/yr: -62.3 25.9, 12 04 29.1346 -04 53 57.172
Visual neighbor 201167090 listed as TYC 4942-865-1 -- Star, Proper motions mas/yr: -12.1 11.8, 12 04 29.137 -04 53 19.73
Posted
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by
zoo3hans
in response to ajamyajax's comment.
I tried AKO on this star and it seems to confirm the periods found so far:
P1=5.9 days
P2=10.065 days
P3=25.52 days
and a screen shot of all four planets nearly at the same time (marked in red are overlap areas):
Posted
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by
JKD
EPIC 228713475 - single signal (already mentioned by DE on this page 5)
S = 2777.15 BKJD, P = 21.67d, Duration ~2.94 hrs, Depth ~0.2%
Posted
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by
ajamyajax
Re 201299088 from Ivan's and Hans Martin's lists: only two decent similar depth transit events but a chance for a Jupiter planet candidate if a smaller giant or subgiant star.
s1=2746.12 p1=21.213 d1=0.5104 (12.25 hours +/-)
Semi-Major Axis a (A.U.) = 0.146
Radius (R_Sun) = 2.363
Mass (M_Sun)= 0.916
Period ~= 21.225 days
Duration ~= 12.2515 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)
201299088 , 2MASS J12084912-0227522 , 10.366 , 9.862 , 9.800 , 0.504 , 0.062 , ('K3V', 0.81) , ('F8V',1.18)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
201299088 182.2047 -2.4645 0.02 11.751 10
201301331 182.2163 -2.4308 128.25 13.358 10
201301343 182.1901 -2.4307 132.66 13.243 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
201299088,2MASS J12084912-0227522,182.204691,-2.464518,5002±99,4.101±2.699,0.917±0.132,11.751,-18.500,-20.300, 7.816e+02±4.930e+02
Posted
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by
ajamyajax
Re 201357643 from Hans Martin's list and 201357835 from Ivan's list: nearby visual neighbor epic 201357835 has similar transits and could indicate contamination as Hans Martin mentioned. But if both are real, a hierarchical system seems possible.
s1=2754.55 p1=11.895 d1=0.27 (6.5 hours +/-)
s2=2753.235 p2=17.67 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)
201357643 , 2MASS J12204359-0135271 , 11.499 , 11.227 , 11.158 , 0.272 , 0.069 , ('G2V', 1.0) , ('G2V',1.0)
201357835 , 2MASS J12204351-0135178 , 11.574 , 11.266 , 11.271 , 0.308 , -0.005 , ('G4V', 0.99) , ('B6V',4.0)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
201357643 185.1817 -1.5909 0.02 11.998 10
201357835 185.1813 -1.5883 9.35 12.281 10
201356767 185.1458 -1.604 137.35 12.792 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
201357643,2MASS J12204359-0135271,185.181680,-1.590889,6127±122,1.352±0.284,1.086±0.141,11.998,-15.500,10.600, 5.162e+02±1.067e+02
201357835,2MASS J12204351-0135178,185.181322,-1.588316,6349±76,1.380±0.133,0.859±0.158,12.281,-26.400,-6.700, 5.650e+02±4.734e+01
Posted
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by
ajamyajax
Re 229158131 from Ivan's and Hans Martin's EB lists: possible circumbinary with a planet depth transit event as spotted by Ivan. Other explanations also possible of course.
s1=2744.16 p1=13.57 d1=0.27 (7.9 hours +/-)
s2=2750.945 p2=13.57 d2=0.27 (7.9 hours +/-)
s3=2780.422 p3=? d3=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)
229158131 , 2MASS J12412137+0212438 , 11.688 , 11.316 , 11.236 , 0.372 , 0.08 , ('G9V', 0.91) , ('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
229158131 190.339 2.2122 0.02 12.729 10
229158740 190.3453 2.2283 62.33 10.182 10epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
229158131,2MASS J12412137+0212438,190.339046,2.212164,5577±167,0.865±0.110,0.860±0.089,12.729,-42.600,13.300, 3.310e+02±6.294e+01
Posted
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by
ajamyajax
Re 201102594 from Hans Martin's list: possible sub-Neptune planet candidate in a small M-dwarf system. The nearby EPICs do not show any sign of this transit.
s1=2746.727 p1=6.515 d1=0.10 (2.0 hours +/-)
Semi-Major Axis a (A.U.) = 0.05
Radius (R_Sun) = 0.43
Mass (M_Sun)= 0.389
Period ~= 6.508 days
Duration ~= 2.0001 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)
201102594 , 2MASS J11592060-0631042 , 12.621 , 12.015 , 11.777 , 0.606 , 0.238 , ('K6V', 0.7) , ('M3V',0.4)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
201102594 179.8359 -6.5179 0.0 15.615 10
201102914 179.8222 -6.5087 59.17 12.855 10
201102257 179.8512 -6.5281 65.9 13.960 10
201101725 179.8038 -6.5426 145.23 13.839 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
201102594,2MASS J11592060-0631042,179.835908,-6.517851,3732±112,0.316±0.054,0.342±0.062,15.615,-6.000,-7.400, 1.064e+02±2.829e+01
Posted
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by
ajamyajax
Re 201092629 from Hans Martin's list: and another possible sub-Neptune planet candidate where the star could be a bit larger than the 0.762 R_sol value on record, if a bit longer duration transit.
s1=2751.212 p1=26.817 d1=0.1851 (4.4423 hours +/-)
Semi-Major Axis a (A.U.) = 0.164
Radius (R_Sun) = 0.762
Mass (M_Sun)= 0.814
Period ~= 26.814 days
Duration ~= 4.4423 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)
201092629 , 2MASS J12045739-0648180 , 10.442 , 9.988 , 9.933 , 0.454 , 0.055 , ('K2V', 0.85) , ('F5V',1.32)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
201092629 181.2394 -6.8049 0.03 11.858 10
201092644 181.2568 -6.8045 62.23 18.706 10
201091872 181.2567 -6.8252 95.88 13.393 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
201092629,2MASS J12045739-0648180,181.239357,-6.804924,5259±83,0.762±0.059,0.814±0.068,11.858,,, 1.437e+02±1.591e+01
Posted
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by
JKD
EPIC 228722026 already discussed as an eccentric EB;
Maybe the third object is at S = 2800.11 BKJD, P = ?; Duration ~2.94 Hrs, Depth ~0.8%
Posted
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by
JKD
EPIC 228722851 maybe a PC - Signal at
S = 2801.80 BKJD, P ~53.0 d, Duration ~1.47 hrs; Depth ~1.6%
Posted
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by
ajamyajax
Re 228731258 from Hans Martin's list: well this target seems stellar by transit shape, but still has planetary depth. There is another EPIC fairly close and it is a brighter target at 10.59 Kepmag that could have caused some light dilution here. But at least that LC does not show this transit.
s1=2747.61 p1=15.783 d1=0.1167 (2.8 hours +/-)
Semi-Major Axis a (A.U.) = 0.115
Radius (R_Sun) = 0.762
Mass (M_Sun)= 0.814
Period ~= 15.788 days
Duration ~= 2.8014 hours
Duration in BKJD ~= 0.1167 days
Estimated duration for a center of star transit ~= 3.7234 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)
228731258 , 2MASS J12385275-0948157 , 13.022 , 12.598 , 12.487 , 0.424 , 0.111 , ('K1V', 0.86) , ('K4V',0.78)
228731379 , 2MASS J12385748-0947550 , 8.753 , 8.091 , 7.898 , 0.662 , 0.193 , ('M7V', 0.098) , ('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
228731258 189.7198 -9.8044 0.02 14.366 10
228731379 189.7395 -9.7986 72.86 10.585 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228731258,2MASS J12385275-0948157,189.719829,-9.804442,5211±144,0.765±0.085,0.812±0.072,14.366,-13.200,-17.100, 4.999e+02±6.776e+01
Posted
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by
ajamyajax
Re 229004835 from Hans Martin's and Ivan's lists: also appears stellar but with a very shallow transit there is a chance this could be a small high impact object. Also note a high proper motion target.
s1=2780.77 p1=16.14 d1=0.1459 (3.5 hours +/-)
Semi-Major Axis a (A.U.) = 0.125
Radius (R_Sun) = 1.02
Mass (M_Sun)= 1.0
Period ~= 16.142 days
Duration ~= 3.5007 hours
Duration in BKJD ~= 0.1459 days
Estimated duration for center of star transit ~= 4.6881 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)
229004835 , 2MASS J12255679-0124164 , 9.061 , 8.805 , 8.725 , 0.256 , 0.08 , ('F9V', 1.14) , ('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
229004835 186.4866 -1.4046 0.0 10.151 10
229004279 186.5205 -1.4153 127.81 11.799 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
229004835,2MASS J12255679-0124164,186.486603,-1.404572,5926±148,1.020±0.058,1.000±0.104,10.151,-128.800,-33.100, 1.224e+02±7.191e+00Listed as TYC 4941-876-1 -- Star on Simbad, Proper motions mas/yr: -128.8 -33.1, 12 25 56.7843 -01 24 16.488
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ajamyajax
Re 229022237 from Ivan's and Hans Martin's lists: a nice U-shaped transit but a giant or subgiant star as indicated by Huber. So with a deep transit as shown and assuming this is a 1.84 R_sol star, this transit could be stellar.
s1=2751.613 p1=15.589 d1=0.3447 (8.27 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)
229022237 , 2MASS J12493687-0103335 , 12.320 , 11.886 , 11.771 , 0.434 , 0.115 , ('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
229022237 192.4036 -1.0593 0.02 13.607 10epic_number,tm_name,ra,dec,k2_teff,exofop_rad,exofop_mass,k2_kepmag,k2_pmra,k2_pmdec,exofop_dist
229022237,2MASS J12493687-0103335,192.403635,-1.059303,,1.840±2.652,0.886±0.086,13.607,11.100,-10.000, 8.864e+02±1.122e+03Proposals GO10077_LC, GO10042_LC
Credit: stellar data from ExoFOP: EPIC classification, Huber et al. (2016) https://github.com/danxhuber/galclassify
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ajamyajax
Re 228894622 from Ivan's and Hans Martin's lists: another possible and hot sub-Neptune planet candidate that seems to work ok with a small dwarf range of 0.6x to 0.8x R_Sol. The field seems fairly clear of other stars so perhaps the blending influence there is minimal.
s1=2744.39 p1=1.965 d1=0.0654 (1.57 hours +/-)
Semi-Major Axis a (A.U.) = 0.027
Radius (R_Sun) = 0.604
Mass (M_Sun)= 0.672
Period ~= 1.966 days
Estimated duration for a center of star transit ~= 1.571 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)
228894622 , 2MASS J12393912-0322138 , 11.556 , 10.956 , 10.827 , 0.6 , 0.129 , ('K5V', 0.75) , ('K4V',0.78)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
228894622 189.913 -3.3705 0.03 13.319 10
228895513 189.8944 -3.3548 87.56 14.759 10epic_number,tm_name,ra,dec,ExoFOP_teff,ExoFOP_rad,ExoFOP_mass,k2_kepmag,k2_pmra,k2_pmdec,ExoFOP_dist
228894622,2MASS J12393912-0322138,189.912987,-3.370542,4356±43,0.604±0.075,0.672±0.088,13.319,-27.600,-2.300, 1.551e+02±1.717e+01
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zoo3hans
in response to ajamyajax's comment.
EPIC 228754001 is now confirmed in https://arxiv.org/abs/1706.05865
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Artman40
https://arxiv.org/abs/1706.06865
EPIC 228735255b now confirmed.
"An eccentric 6.57 day transiting hot Jupiter in Virgo"
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ajamyajax
Re 201093731 from Ivan's, JKD's, and DoctorDave's mention on PH: an interesting single transit, but a fairly good chance it is stellar if primary close to a F-type 1.28 R_Sol as indicated by Huber et al, or even a bit smaller G-type star. Maybe a chance for a sizeable brown dwarf here though.
s1=2801.84 p1=? d1=0.25 (6.0 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)
201093731 , 2MASS J12112069-0646221 , 12.817 , 12.557 , 12.495 , 0.26 , 0.062 , ('G0V', 1.09) , ('F8V',1.18)From NEA, K2 Targets within search area:
EPIC Number RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag] Campaign Number
201093731 182.8362 -6.7728 0.03 13.743 10epic_number,tm_name,ra,dec,k2_teff,k2_rad,k2_mass,k2_kepmag,k2_pmra,k2_pmdec,k2_dist
201093731,2MASS J12112069-0646221,182.836205,-6.772818,6134.00,1.28,1.01,13.743,8.900,3.200,903.70Aliases
WISE J121120.70-064622.0
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Artman40
https://keplerscience.arc.nasa.gov/new-community-prepared-k2-light-curves-available-at-mast.html
"New community-prepared K2 light curves available at MAST "
"As of this month, the second version of the K2 Systematics Correction (K2SC) light curves prepared by Aigrain et al. has been made available. The K2SC pipeline aims to preserve astrophysical signals by modeling both spacecraft systematics and stellar variability at the same time. Version 2.0 incorporates Campaigns 7, 8, and 10 for the first time, includes a re-processing of Campaigns 3-6, and fixes the "cadence" and "quality" columns which were affected by a glitch in version 1.0."
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zoo3hans
in response to ajamyajax's comment.
Now confirmed in https://arxiv.org/pdf/1806.11504.pdf
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zoo3hans
in response to ajamyajax's comment.
Now confirmed in https://arxiv.org/pdf/1806.11504.pdf
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