Kepler dithered calibration data finds

by zoo3hans

With the help of minimally-corrected data by Mark Omohundro and LcViewer by Al Schmitt

PC candidates

EPIC 2696262 dip at 115.764, duration 2 hours, depth 0.003

EPIC 3113433 dip at 116.356, duration 2.5 hours, depth 0.004

EPIC 3231406 dip at 115.866, duration 3.5 hours, depth 0.009

EPIC 3338674 large dip at 116.816, duration 6.4 hours, depth 0.0648, so more likely an EB. Well, it seems to be KOI-3796, a known Kepler False-Positive.

EPIC 3455941 maybe P=1.083 days, duration 6.8 hours, depth 0.0025.

EPIC 3456666 dip at 116.795, duration 11.28 hours, depth 0.008

EPIC 3848948 P=0.5287375 days, duration 4 hours, depth 0.0119

EPIC 4073730 dip at 115.988, duration 4 hours, depth 0.0111. Well, it seems to be KOI-3785, a known Kepler False-Positive.

EPIC 4074388 dip at 117.153, duration 3 hours, depth 0.006

EPIC 4254540 dip at 115.478, duration 5 hours, depth 0.0077

EPIC 4922182 dip at 116.3256, duration 3.5 hours, depth 0.0054

EB candidates

EPIC 3102595 P=0.195 days

EPIC 3339894 P=1.083 days

EPIC 3964128 P=0.4444625 days, could be a pulsating variable as well

EPIC 4482738 P=0.4342 days

EPIC 4948991 P=0.3133 days (or double this value)

RR_Lyrae

EPIC 1028018

EPIC 2020444

EPIC 2141387

EPIC 2557555

EPIC 3216518

EPIC 4727286

EPIC 4758316

Other

EPIC 2300529 DSCT

EPIC 2857324 DSCT (Delta-Scuti variable)

EPIC 3120057 DSCT

EPIC 3218637 P=0.506 days, maybe Gamma Doradus variable

EPIC 3245420 DSCT

EPIC 3324644 maybe LPV

EPIC 3331147 P=0.761 days, maybe Gamma Doradus variable (InCat=False in the Kepler Eclipsing Binary catalog)

EPIC 3439831 P=0.4035 days , must be a pulsating variable (InCat=False in the Kepler Eclipsing Binary catalog)

EPIC 3731292 maybe DSCT

EPIC 3847822 some sort of outbreak at 117.378 , maybe DN?

EPIC 3868420 P=0.20899 days, must be a pulsating variable (InCat=False in the Kepler Eclipsing Binary catalog)

EPIC 4732015 P=1.8744 days, must be a pulsating variable (InCat=False in the Kepler Eclipsing Binary catalog)

EPIC 4160235 maybe DSCT

EPIC 4254540 maybe DSCT

EPIC 4544967 maybe DSCT

Glitches

116.254

Posted April 21, 2017 8:16 AM
by ajamyajax

"HAT-P-7b: An Extremely Hot Massive Planet Transiting a Bright Star in the Kepler Field"

https://arxiv.org/abs/0803.0746

HAT-P-7b, Kepler-2, KOI-2, KIC 10666592

Posted April 22, 2017 1:36 PM
by Artman40

Any available visualized light curves?

[EDIT] Thanks.

Posted April 22, 2017 3:07 PM
by Dolorous_Edd

KIC 8462852

KIC 8462852 also in the data - sadly doesn't look like there is anything interesting

PC

11805460 - maybe dip at 115.630

11511880 - dip 115.47

11446443 - dip at 115.35; Kepler 1-b

10538371 - maybe dip at 116.21

10417308 - maybe dip at 115.89

9508395 - maybe dip at 115.58

9450786 - maybe dip at 115.488

9284813 - maybe dip at maybe dip at 116.41

9278376 - maybe dip at 115.90

8610579 - maybe dip at 116.16

8510314 - maybe dip at 116.100250

8479780 - maybe dip at 116.30

8235144 - maybe dip at 115.559050

8226464 - dip at 115.743200

7777553 - maybe dips at 115.895 and 117.070

6676885 - maybe at 115.75

6266282 - maybe dip at 116.25

5120665 - maybe at 115.76

5208056 - maybe at 116.09

5641711 - maybe at 115.84

EB

11754974 - maybe EB not listed

10735575 - EB period ~0.8, in catalog with wrong parametrs

9210823 - period 1.6; in catalog but with wrong period

9045521 - period 0.163; but full LC looks like DSCT

9029017 - period ~0.6 ; not listed

8525691 - period 0.433 ; not in EB catalog

8153578 - dip at 115.82

7440322 - not listed

7385783 - Contact EB ; not listed

7293937 - 2dips; not listed

5699595 - Contact EB ; not listed

5653072 - at 116.386 good looking transit ( listed as FP in NEA )

5343997 - at 117.40 good looking transit ( maybe PC, anyway not in EB catalog or NEA )

Posted April 22, 2017 4:16 PM
by zoo3hans in response to Artman40's comment.

I added images of the light curve graphs to the PC candidates.

Posted April 22, 2017 4:30 PM
by zoo3hans in response to ajamyajax's comment.

Nice Mark!

Here is the LcViewer image:

Posted April 22, 2017 4:57 PM
by Artman40

Very nice! Do these stars have observations from somewhere else as well by accident?

Posted April 23, 2017 5:28 PM
by Dolorous_Edd in response to Artman40's comment.

these are the same stars Kepler observed during its original mission

Posted April 23, 2017 5:31 PM
by ajamyajax

Re 5653072 from Ivan's KDD list: and as mentioned this target does appear stellar, but the NEA giant or subgiant listing of 34.674 RSun (+20.091-6.697) and 0.954 MSun (+0.464-0.038) at 0.0421 AU on the NEA are curious for this period and duration. Also any such transit are not nearly as obvious in the corrected K1 light curve as here in the raw summary data. So it could be contamination from a smaller giant that was corrected out perhaps, given the false positive centroid offset on record. Maybe even one of the other nearby KIC's but didn't check them yet other than run my older Kepler radius search program (results listed last).

s1=132.50118 p1=3.22452656 d1=0.214833 (5.156 hours +/-)

Semi-Major Axis a (A.U.) = 0.042

Radius (R_Sun) = 1.89

Mass (M_Sun)= 0.954

Period ~= 3.23 days

Duration ~= 5.1615 hours

Duration in BKJD ~= 0.2151 days

From NEA, K1 Targets within search area:

KIC RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag]

5653072 299.6913 40.856 0.0 12.474 2MASS J19584590+4051215

5652983 299.6762 40.8565 41.16 12.193 2MASS J19584227+4051233

5653152 299.7084 40.8642 55.33 15.705 2MASS J19585000+4051512

5653075 299.6918 40.8313 88.81 14.986 2MASS J19584602+4049526

5653095 299.6964 40.8301 94.12 16.598 2MASS J19584713+4049483

5653163 299.7102 40.878 94.83 10.630 2MASS J19585049+4052422

5652893 299.6596 40.8438 96.56 13.380 2MASS J19583830+4050378

5653004 299.68 40.8826 100.72 13.723 2MASS J19584321+4052574

5653217 299.7234 40.8729 106.67 17.014 2MASS J19585362+4052223

5653138 299.7047 40.8276 108.34 14.715 2MASS J19584911+4049394

5652832 299.6476 40.8631 121.52 13.999 2MASS J19583543+4051473

5653079 299.6935 40.8215 124.23 16.718 2MASS J19584644+4049173

5652795 299.6427 40.8522 132.99 14.591 2MASS J19583424+4051077

5653126 299.702 40.8963 148.05 13.173 2MASS J19584847+4053465

Aliases

KOI-3252

ExoFOP: False Positive: Centroid Offset

Also a busy field in Aladin Lite

(Kepler data for RA/Dec 299.6913,40.856)

Kepler KIC# [Angular Separation] Kep Mag/ Teff /Stellar Radius / MAST link*

KIC 5653072 [0'] 12.474/---/---* http://archive.stsci.edu/kepler/data_search/search.php?action=Search&ktc_kepler_id=5653072

| KIC 5653072 flagged as False_Positive; KOI 3252.01 (FP) P/E=3.22452656/132.50118;

False Positive Reason(s):Centroid Offset;

KIC 5652983 [0.69'] 12.193/4997/3.011* http://archive.stsci.edu/kepler/data_search/search.php?action=Search&ktc_kepler_id=5652983

| KIC 5652983 flagged as Eclipsing_binary; False_Positive; KOI 371.01 P/E=498.39114/244.08191; KOI 371.02 (FP) P/E=9.0584662/133.2317;

KIC 5653152 [0.92'] 15.705/4385/0.772* http://archive.stsci.edu/kepler/data_search/search.php?action=Search&ktc_kepler_id=5653152

| KIC 5653152 flagged as False_Positive; KOI 5189.01 (FP) P/E=3.58958897/132.99051;

False Positive Reason(s):Significant Secondary;Centroid Offset;

KIC 5653172 [1.12'] 12.654/4125/24.953* http://archive.stsci.edu/kepler/data_search/search.php?action=Search&ktc_kepler_id=5653172

| Note KIC 5653172's stellar radius is 24.953

KIC 5653075 [1.48'] 14.986/4823/0.932* http://archive.stsci.edu/kepler/data_search/search.php?action=Search&ktc_kepler_id=5653075

KIC 5653095 [1.57'] 16.598/4612/1.798* http://archive.stsci.edu/kepler/data_search/search.php?action=Search&ktc_kepler_id=5653095

KIC 5653163 [1.58'] 10.630/---/---* http://archive.stsci.edu/kepler/data_search/search.php?action=Search&ktc_kepler_id=5653163

| KIC 5653163 flagged as False_Positive; KOI 5190.01 (FP) P/E=2.40446709/133.1717;

False Positive Reason(s):Significant Secondary;Ephemeris Match Indicates Contamination;

KIC 5652893 [1.61'] 13.380/4945/0.758* http://archive.stsci.edu/kepler/data_search/search.php?action=Search&ktc_kepler_id=5652893

| KIC 5652893 flagged as Exoplanet; KOI 2790.01 P/E=14.00947528/132.97208;

Posted April 23, 2017 10:13 PM
by ajamyajax

Re 3848948 from Hans Martin's KKD list: this target appears to be contaminated by nearby EB KIC 3848919.

From NEA, K1 Targets within search area:

KIC RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag]

3848948 291.0643 38.9707 0.0 10.061 2MASS J19241542+3858143

3848919 291.0563 38.9744 25.98 13.901 2MASS J19241352+3858278

3849010 291.0849 38.9717 57.86 15.427 2MASS J19242037+3858181

3849003 291.082 38.9598 63.22 15.214 2MASS J19241967+3857352

3848996 291.0787 38.9568 64.19 14.318 2MASS J19241889+3857245

3848987 291.0768 38.9521 75.37 14.442 2MASS J19241844+3857077

3848939 291.0616 38.9493 77.41 15.237 2MASS J19241477+3856573

3849002 291.0819 38.9505 87.88 14.966 2MASS J19241965+3857016

3849016 291.0856 38.9911 94.83 12.422 2MASS J19242055+3859280

3849048 291.095 38.983 96.73 13.971 2MASS J19242279+3858588

3848926 291.0585 38.9436 98.74 15.803 2MASS J19241405+3856369

3848975 291.0719 38.9424 103.95 12.967 2MASS J19241725+3856326

3848948,2MASS J19241542+3858143,291.064270,38.970661,8279,3.409,,10.061,(A4V)

Aliases

KOI-5016

WISE J192415.42+385814.3

(Kepler data for RA/Dec 291.0643,38.9707)

Kepler KIC# [Angular Separation] Kep Mag/ Teff /Stellar Radius / MAST link*

KIC 3848948 [0'] 10.061/8057/2.998* http://archive.stsci.edu/kepler/data_search/search.php?action=Search&ktc_kepler_id=3848948

| KIC 3848948 flagged as Planetary_candidate; KOI 5016.01 (FP) P/E=0.523629857/131.77045;

KIC 3848919 [0.43'] 13.901/5226/0.965* http://archive.stsci.edu/kepler/data_search/search.php?action=Search&ktc_kepler_id=3848919

| KIC 3848919 flagged as Eclipsing_binary; False_Positive; KOI 5015.01 (FP) P/E=0.523630206/131.7669544; P/E=1.0472603/131.765943;

False Positive Reason(s):Significant Secondary;

Posted May 1, 2017 6:44 PM
by ajamyajax

Re 5343997 from Ivan's KDD list: not listed, but this full-aperture transit matches the epoch-period times of KIC 5343976 and appears to be contamination from this nearby EB.

From NEA, K1 Targets within search area:

KIC RA [decimal degrees] Dec [decimal degrees] Distance [arc sec] Kepler-band [mag]

5343997 285.096 40.5377 0.0 10.011 2MASS J19002305+4032159

5343976 285.0857 40.5276 46.12 12.612 2MASS J19002056+4031395

5344022 285.1041 40.5257 48.53 14.991 2MASS J19002497+4031325

5344012 285.1011 40.5599 81.06 14.974 2MASS J19002426+4033357

5344035 285.1087 40.5582 81.26 15.685 2MASS J19002609+4033293

5344075 285.1283 40.5389 88.27 14.769 2MASS J19003078+4032199

5343973 285.0837 40.514 91.93 14.641 2MASS J19002009+4030503

5344019 285.1028 40.5104 100.07 12.441 2MASS J19002466+4030375

5343997,2MASS J19002305+4032159,285.096040,40.537743,6432,1.588,1.0310,10.011,(F5V)

Aliases

WISE J190023.04+403215.9

From VSX:

Dist. ' Name AUID Coords (J2000) Const. Var. type Period (d) Mag. range

0.77 Variable KID 05343976 -- 19 00 20.56 +40 31 39.5 Lyr EA 4.331313 12.612 - ? Kp

From Simbad at a close distance of 45.89 arcsecs:

KIC 5343976 -- Eclipsing binary of Algol type (detached), Proper motions mas/yr: 6.3 1.7, 19 00 20.567 +40 31 39.51

(Kepler data for RA/Dec 285.096,40.5377)

Kepler KIC# [Angular Separation] Kep Mag/ Teff /Stellar Radius / MAST link*

KIC 5343997 [0'] 10.011/---/---* http://archive.stsci.edu/kepler/data_search/search.php?action=Search&ktc_kepler_id=5343997

KIC 5343976 [0.77'] 12.612/---/---* http://archive.stsci.edu/kepler/data_search/search.php?action=Search&ktc_kepler_id=5343976

| KIC 5343976 flagged as Eclipsing_binary; False_Positive; KOI 6565.01 (FP) P/E=4.331392151/134.7275156; P/E=4.3313919/121.732926;

False Positive Reason(s):Significant Secondary;

Posted May 1, 2017 6:45 PM