2020A&A...638A.143A

Query : 2020A&A...638A.143A

2020A&A...638A.143A - Astronomy and Astrophysics, volume 638A, 143-143 (2020/6-1)

Variability of transit light curves of Kepler objects of interest.

ARKHYPOV O.V., KHODACHENKO M.L. and HANSLMEIER A.

Abstract (from CDS):


Context. Hitherto, the study of exoplanetary transit timing and duration variability has supposed transit light curves (TLCs) to be symmetric, suggesting a priori a spherical shape for the transiting object, for example, an exoplanet. As a result, the independent positions of transit borders are unknown. However, the borders of TLCs are most sensitive to the presence of exo-rings and/or dust formations of great interest.
Aims. For the first time we check for a timing variability of independently treated borders of transits of different types of exoplanets.
Methods. Using quadratic approximation for the start-, end-, and minimum parts of the long-cadence TLCs from the Kepler mission archive after their whitening and phase folding, we find the corresponding transit border timings: Δts, Δte, respectively, and the TLC minimum time Δtm. These parameters were found separately for each folded TLC constructed in the consequent non-overlapping time-windows with the respective medium time tw. Temporal and cross-correlation analysis of the obtained series of Δts(tw), Δte(tw), and Δtm(tw) were applied for the detection and diagnostics of variability of transit borders and TLC asymmetry.
Results. Among the considered TLCs of 98 Kepler objects of interest (KOIs), 15 confirmed giant exoplanets and 5 objects with still debatable status (probably non-planets) show variations in their transit timing parameters at timescales from ~=400 to ≥1500 days. These variations are especially well manifested as an anti-correlation between Δts and Δte, indicating variability in the dimensions of transiting shadows, especially along their trajectories. There are also objects with well pronounced oscillations of transit border timing and asymmetry.
Conclusions. The discovered variability of transit timing is important as an indicator of large-scale non-stationary processes in the atmospheres of KOIs, as well as dust and aerosol generation in their upper layers and in their close vicinity. These findings highlight the need for a dedicated and detailed study.

Abstract Copyright: © ESO 2020

Journal keyword(s): planets and satellites: general - planets and satellites: rings - planet-star interactions

Simbad objects: 193

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Number of rows : 193
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 Kepler-94 Er* 18 44 46.7440377288 +47 29 49.749482616   14.438 13.184 12.825   M0V 67 0
2 Kepler-94b Pl 18 44 46.7440377288 +47 29 49.749482616           ~ 52 0
3 Kepler-8 Ro* 18 45 09.1489991376 +42 27 03.891327156           F6V 107 1
4 Kepler-8b Pl 18 45 09.1489991376 +42 27 03.891327156           ~ 94 1
5 Kepler-422b Pl 18 50 31.1172439656 +46 19 23.993631336           ~ 40 0
6 Kepler-422 Er* 18 50 31.1172439656 +46 19 23.993631336           G2V 69 0
7 Kepler-714b Pl 18 50 47.8787956344 +43 16 21.879398172           ~ 15 0
8 Kepler-714 Ro* 18 50 47.8787956344 +43 16 21.879398172           ~ 29 0
9 Kepler-488b err 18 51 51.878 +48 20 42.25           ~ 16 0
10 Kepler-488 EB* 18 51 51.8892198600 +48 20 42.180768744       14.858   ~ 34 0
11 HD 175289 Er* 18 52 36.1604006928 +45 08 23.345639700   9.95 9.50 9.44   F6IV 101 0
12 HD 175289b Pl 18 52 36.1604006928 +45 08 23.345639700           ~ 37 0
13 Kepler-546b Pl 18 53 01.8232460016 +40 59 25.695193272           ~ 14 0
14 Kepler-546 Ro* 18 53 01.8232460016 +40 59 25.695193272           ~ 27 0
15 KOI-6774 EB* 18 56 31.7017512072 +42 21 01.514227392           ~ 14 0
16 KOI-6774.01 Pl? 18 56 31.7017512072 +42 21 01.514227392           ~ 4 0
17 Kepler-95b Pl 18 57 55.7883819888 +44 23 52.818842400           ~ 49 0
18 Kepler-95 Er* 18 57 55.7883819888 +44 23 52.818842400   13.313 12.481 12.268   G5V 83 0
19 Kepler-723 EB* 18 59 19.3138934616 +44 39 29.330650836       15.50   ~ 33 1
20 Kepler-723b Pl 18 59 19.3138934616 +44 39 29.330650836           ~ 16 0
21 Kepler-486 Ro* 18 59 31.1991605400 +49 16 01.172404596           ~ 49 0
22 Kepler-486b Pl 18 59 31.1991605400 +49 16 01.172404596           ~ 36 0
23 Kepler-686b Pl 19 00 51.3164244000 +39 01 38.813730924           ~ 16 0
24 Kepler-686 Ro* 19 00 51.3164244000 +39 01 38.813730924           ~ 32 0
25 Kepler-4b Pl 19 02 27.6979514832 +50 08 08.703945600           ~ 101 1
26 Kepler-4 Er* 19 02 27.6979514832 +50 08 08.703945600   13.114 12.293 12.195   G0 104 1
27 HD 177876b Pl? 19 04 04.6072024824 +48 52 00.102075096           ~ 6 0
28 HD 177876 EB* 19 04 04.6072024824 +48 52 00.102075096   7.80 7.68     A3IV-n 46 0
29 Kepler-412 Ro* 19 04 26.4756106584 +43 40 51.351610944   14.41 13.73 14.67 12.79 F9 63 1
30 Kepler-412b Pl 19 04 26.4756849829 +43 40 51.351551801           ~ 47 1
31 Kepler-12b Pl 19 04 58.4220633696 +50 02 25.271762064           ~ 88 1
32 Kepler-12 Er* 19 04 58.4220633696 +50 02 25.271762064   13.96   13.68   G0 84 1
33 Kepler-1 EB* 19 07 14.0375836512 +49 18 59.091482160   11.85 11.25     G0V 176 2
34 Kepler-1b Pl 19 07 14.0375836512 +49 18 59.091482160           ~ 330 2
35 BD+46 2629 EB* 19 07 53.104944 +46 52 06.00420   10.12 9.70 9.80   kA2hA5mA7(IV)m: 157 0
36 NAME BD+46 2629Ab Pl 19 07 53.1397066992 +46 52 05.922122844           ~ 167 1
37 Kepler-475b Pl 19 08 12.4124936088 +40 12 41.502402288           ~ 25 0
38 Kepler-475 Er* 19 08 12.4124936088 +40 12 41.502402288   14.815 13.627 13.324   ~ 45 0
39 Kepler-491b Pl 19 08 31.3446274272 +42 21 00.609790608           ~ 27 0
40 Kepler-491 EB* 19 08 31.3446274272 +42 21 00.609790608           K1 56 0
41 KOI-621 EB* 19 09 50.6416745712 +50 58 30.250307964       15.08   ~ 18 1
42 KOI-531.01 Pl? 19 10 45.8829501288 +47 32 48.684259716           ~ 19 0
43 KOI-531 EB* 19 10 45.8829501288 +47 32 48.684259716       14.564   M0V 42 0
44 Kepler-14b Pl 19 10 50.110176 +47 19 58.87632           ~ 61 1
45 Kepler-14 EB* 19 10 50.110176 +47 19 58.87632   12.36 12.09 12.08 11.65 ~ 84 1
46 KOI-141.01 Pl? 19 12 09.190104 +50 39 05.79024           ~ 18 0
47 KOI-141 Er* 19 12 09.190104 +50 39 05.79024   14.86 13.82 13.76   G8V 43 0
48 Kepler-427b Pl 19 13 01.0959580968 +43 42 17.522095752           ~ 32 0
49 Kepler-427 Ro* 19 13 01.0959580968 +43 42 17.522095752   15.13 14.42 14.31 14.013 G3 39 0
50 Kepler-7 Er* 19 14 19.5623105760 +41 05 23.367379128           G0 112 1
51 Kepler-7b Pl 19 14 19.5623105760 +41 05 23.367379128           ~ 204 1
52 Kepler-858b Pl 19 15 23.6724855936 +51 12 32.574855816           ~ 29 0
53 Kepler-858 Er* 19 15 23.6724855936 +51 12 32.574855816   13.151 12.557 12.413   G6 41 0
54 Kepler-468 EB* 19 15 36.5419951656 +49 22 13.749148200           G7 31 0
55 Kepler-468b Pl 19 15 36.5419951656 +49 22 13.749148200           ~ 13 0
56 Kepler-63b Pl 19 16 54.2861367672 +49 32 53.451062520           ~ 68 1
57 Kepler-63 Er* 19 16 54.2861367672 +49 32 53.451062520   12.449 11.733 11.701   G5 114 1
58 Kepler-426b Pl 19 17 44.3197671864 +49 28 24.305841048           ~ 29 0
59 Kepler-426 Ro* 19 17 44.3197671864 +49 28 24.305841048   15.736 15.073 14.863 14.735 ~ 49 0
60 Kepler-856 Ro* 19 18 24.9203061264 +46 18 53.818199100           ~ 24 0
61 Kepler-856b Pl 19 18 24.9203061264 +46 18 53.818199100           ~ 17 0
62 Kepler-77 Ro* 19 18 25.9101027984 +44 20 43.571253840   15.03 14.10 13.91   G5V 68 1
63 Kepler-77b Pl 19 18 25.9101027984 +44 20 43.571253840           ~ 44 1
64 KOI-319.01 Pl? 19 20 28.2085336008 +44 52 22.548870588           ~ 24 0
65 KOI-319 Er* 19 20 28.2085336008 +44 52 22.548870588   13.043 12.226 12.136   ~ 58 0
66 Kepler-425b Pl 19 21 25.9208083800 +40 34 03.855315612           ~ 32 0
67 Kepler-425 Ro* 19 21 25.9208083800 +40 34 03.855315612   16.047 14.97 14.73 14.605 K2 50 0
68 Kepler-19 Er* 19 21 40.9995019176 +37 51 06.437281140   12.88 12.04 11.888   F9 89 1
69 Kepler-19b Pl 19 21 40.9995019176 +37 51 06.437281140           ~ 54 1
70 Kepler-628 EB* 19 21 47.8219347840 +39 51 17.266508388           G0.5V 23 0
71 Kepler-628b Pl 19 21 47.8219347840 +39 51 17.266508388           ~ 11 0
72 Kepler-428 Ro* 19 22 19.6164487104 +40 34 38.564097492   16.584 15.405 15.101 14.84 K1V 44 0
73 Kepler-428b Pl 19 22 19.6164487104 +40 34 38.564097492           ~ 27 0
74 Kepler-489 Ro* 19 23 19.9545787272 +38 11 03.586755120           K2 49 0
75 Kepler-489b Pl 19 23 19.9545787272 +38 11 03.586755120           ~ 27 0
76 Kepler-1520 Er* 19 23 51.8899191552 +51 30 16.983425232   17.130 16.117 15.772   ~ 76 1
77 Kepler-1520b Pl 19 23 51.8899191552 +51 30 16.983425232           ~ 78 1
78 Kepler-75b Pl 19 24 33.0185656152 +36 34 38.477691264           ~ 48 1
79 Kepler-75 Er* 19 24 33.0185656152 +36 34 38.477691264   16.237 15.353 15.258   ~ 61 1
80 KOI-100.01 Pl? 19 24 42.7046100672 +39 11 58.100275140           ~ 13 0
81 KOI-100 Er* 19 24 42.7046100672 +39 11 58.100275140   13.172 12.662 12.618   ~ 37 0
82 Kepler-762 Er* 19 25 06.1559518944 +47 19 46.243924392       15.770   ~ 28 0
83 Kepler-762b Pl 19 25 06.1559518944 +47 19 46.243924392           ~ 21 0
84 BD+38 3583b Pl 19 25 40.3885404552 +38 40 20.413186860           ~ 105 0
85 BD+38 3583 Er* 19 25 40.3885404552 +38 40 20.413186860   10.73 10.00 9.853   G5V 117 0
86 Kepler-706b Pl 19 27 02.4907837752 +41 56 38.692787388           ~ 18 0
87 Kepler-706 Ro* 19 27 02.4907837752 +41 56 38.692787388           ~ 37 0
88 Kepler-785 Ro* 19 28 16.3968401760 +38 50 32.146033884           M1V 39 0
89 Kepler-785b Pl 19 28 16.3968401760 +38 50 32.146033884           ~ 19 0
90 Kepler-1976b Pl 19 28 40.0933854240 +48 43 39.322553952           ~ 20 0
91 Kepler-1976 EB* 19 28 40.0933854240 +48 43 39.322553952           ~ 41 0
92 BD+47 2846 Er* 19 28 59.3538826128 +47 58 10.217007804   10.97 10.48     F6V 306 2
93 BD+47 2846b Pl 19 28 59.3538826128 +47 58 10.217007804           ~ 377 1
94 Kepler-435 Er* 19 29 08.9490159624 +43 11 50.159878764   14.228 13.772 13.665 12.92 F5V 63 1
95 Kepler-435b Pl 19 29 08.9490159624 +43 11 50.159878764           ~ 39 0
96 KOI-6085 EB* 19 31 01.4618739936 +49 15 52.381556820           ~ 17 0
97 Kepler-423 Ro* 19 31 25.3755434664 +46 23 28.220459784           F9 61 0
98 Kepler-423b Pl 19 31 25.3755434664 +46 23 28.220459784           ~ 35 0
99 Kepler-45b Pl 19 31 29.4966491088 +41 03 51.356401092           ~ 82 1
100 Kepler-45 Ro* 19 31 29.4966491088 +41 03 51.356401092     16.88 16.63   M1V 93 1
101 Kepler-74b Pl 19 32 22.2086887440 +41 21 19.907283744           ~ 43 1
102 Kepler-74 Ro* 19 32 22.2086887440 +41 21 19.907283744   14.5 14.23 14.60 13.49 G4 52 1
103 KOI-856.01 Pl? 19 32 43.0336393104 +41 58 09.282733032           ~ 14 0
104 KOI-856 Ro* 19 32 43.0336393104 +41 58 09.282733032           ~ 32 0
105 Kepler-685 Ro* 19 35 29.2598583840 +38 25 22.609698816           K0IV 37 0
106 Kepler-685b Pl 19 35 29.2598583840 +38 25 22.609698816           ~ 19 0
107 Kepler-702b Pl 19 35 30.7406614152 +41 39 42.315610644           ~ 18 0
108 Kepler-702 Ro* 19 35 30.7406614152 +41 39 42.315610644           ~ 30 0
109 Kepler-76b Pl 19 36 46.1090731584 +39 37 08.340641364           ~ 52 1
110 Kepler-76 EB* 19 36 46.1090731584 +39 37 08.340641364           ~ 38 1
111 KOI-1547 Ro* 19 36 48.2192598792 +40 27 21.467010708           ~ 21 0
112 KOI-1547.01 Pl? 19 36 48.2192598792 +40 27 21.467010708           ~ 13 0
113 Kepler-1658b Pl 19 37 25.5732756048 +38 56 50.518200048           ~ 29 0
114 Kepler-1658 EB* 19 37 25.5732756048 +38 56 50.518200048   12.070 11.556 11.433   F5 48 0
115 Kepler-41b Pl 19 38 03.1746869808 +45 58 53.877058284           ~ 74 1
116 Kepler-41 Ro* 19 38 03.1746869808 +45 58 53.877058284           ~ 65 1
117 Kepler-71 Ro* 19 39 27.7155573840 +46 17 08.941351920       15.35   G8V 60 1
118 Kepler-71b Pl 19 39 27.7155573840 +46 17 08.941351920           ~ 29 1
119 Kepler-485 Ro* 19 39 59.1150655776 +50 28 12.194378292           F9 46 0
120 Kepler-485b Pl 19 39 59.1150655776 +50 28 12.194378292           ~ 23 0
121 Kepler-855 Er* 19 40 22.7954595144 +43 32 15.253749060       15.051   ~ 25 0
122 Kepler-855b Pl 19 40 22.7954595144 +43 32 15.253749060           ~ 17 0
123 Kepler-493 Er* 19 41 13.8138363744 +38 52 53.926356072   15.814 15.270 15.332   ~ 34 0
124 Kepler-493b Pl 19 41 13.8138363744 +38 52 53.926356072           ~ 18 0
125 Kepler-492b Pl 19 41 59.1967605000 +42 32 16.400455944           ~ 41 0
126 Kepler-492 Er* 19 41 59.1967605000 +42 32 16.400455944   15.597 14.813 14.537   ~ 45 1
127 Kepler-719 * 19 42 08.6609695800 +43 53 04.012955376           ~ 22 0
128 Kepler-719b err 19 42 08.671 +43 53 04.02           ~ 11 0
129 KOI-823 Er* 19 44 01.6687543512 +40 17 43.480688928   15.926 15.449 15.255   F5V 28 0
130 KOI-823.01 Pl? 19 44 01.6687543512 +40 17 43.480688928           ~ 14 0
131 KOI-212 Er* 19 44 33.5492190048 +41 36 11.405080908   15.698 14.904 14.699   ~ 27 0
132 KOI-212.01 Pl? 19 44 33.5492190048 +41 36 11.405080908           ~ 11 0
133 KOI-185 EB* 19 44 44.4560938296 +39 15 45.663083460           ~ 21 0
134 Kepler-15b Pl 19 44 48.1365025872 +49 08 24.297539028           ~ 55 1
135 Kepler-15 Ro* 19 44 48.1365025872 +49 08 24.297539028       14.03   G8IV-V 72 1
136 KOI-5745 EB* 19 45 18.7056689208 +46 50 22.614585432           ~ 18 0
137 KOI-5745.01 Pl? 19 45 18.7056689208 +46 50 22.614585432           ~ 7 0
138 Kepler-731 EB* 19 45 34.3632953784 +45 34 06.816377604           ~ 36 0
139 Kepler-731b Pl 19 45 34.3632953784 +45 34 06.816377604           ~ 18 0
140 Kepler-840 EB* 19 46 01.7691777264 +49 27 26.238139488           F9 32 0
141 Kepler-840b Pl 19 46 01.7691777264 +49 27 26.238139488           ~ 13 0
142 KOI-64 Er* 19 46 02.5373669448 +42 32 50.793426168   14.029   13.122   G5V 41 0
143 KOI-64.01 err 19 46 02.54 +42 32 50.8           ~ 18 0
144 Kepler-472 Er* 19 46 05.8385951016 +39 14 59.161856964       13.647   K3V 45 0
145 Kepler-472b Pl 19 46 05.8385951016 +39 14 59.161856964           ~ 23 0
146 KOI-883 Ro* 19 46 43.9374116784 +42 58 04.356492672           K2V 39 0
147 KOI-883.01 Pl? 19 46 43.9374116784 +42 58 04.356492672           ~ 21 0
148 Kepler-40 Ro* 19 47 15.2874297936 +47 31 35.665322736   15.11   14.89 14.02 F5IV 50 1
149 Kepler-40b Pl 19 47 15.2874297936 +47 31 35.665322736           ~ 36 1
150 Kepler-6 Ro* 19 47 20.9379557640 +48 14 23.759029608           ~ 97 1
151 Kepler-6b Pl 19 47 20.9379557640 +48 14 23.759029608           ~ 102 1
152 Kepler-699 Ro* 19 47 33.1585178736 +41 23 45.962750652           ~ 32 0
153 Kepler-699b Pl 19 47 33.1585178736 +41 23 45.962750652           ~ 21 0
154 Kepler-670 Ro* 19 48 03.7152956904 +49 13 31.134289188           ~ 36 0
155 Kepler-670b Pl 19 48 03.7152956904 +49 13 31.134289188           ~ 22 0
156 Kepler-96 EB* 19 48 16.7135669520 +40 31 30.523868868   11.130 10.436 10.233   G2V 80 0
157 Kepler-96b Pl 19 48 16.7135669520 +40 31 30.523868868           ~ 46 0
158 Kepler-448b Pl 19 49 48.8933114592 +41 00 39.630681720           ~ 48 0
159 Kepler-448 Er* 19 49 48.8933114592 +41 00 39.630681720   11.73 11.51     F5IV 72 0
160 Kepler-433b Pl 19 50 22.4722397592 +40 58 38.154033120           ~ 25 0
161 Kepler-433 EB* 19 50 22.4722397592 +40 58 38.154033120   15.373 14.574 14.81 14.10 ~ 45 1
162 KOI-1784 EB* 19 50 35.0583308352 +47 10 02.969179968   14.35 13.72 13.64   G2V 35 0
163 KOI-1784.01 Pl? 19 50 35.0583308352 +47 10 02.969179968           ~ 15 0
164 BD+47 2936 EB* 19 50 50.2472976936 +48 04 51.101390496       8.8   K4V 300 2
165 BD+47 2936b Pl 19 50 50.2472976936 +48 04 51.101390496           ~ 416 1
166 KOI-611.01 Pl? 19 53 10.5711637968 +41 41 01.737321144           ~ 19 0
167 KOI-611 Er* 19 53 10.5711637968 +41 41 01.737321144       14.079   ~ 35 0
168 Kepler-17b Pl 19 53 34.8643397568 +47 48 54.049530564           ~ 101 1
169 Kepler-17 Ro* 19 53 34.8643397568 +47 48 54.049530564   14.6   13.6   G5V 151 1
170 Kepler-424b Pl 19 54 29.9854950120 +48 34 38.802689796           ~ 33 0
171 Kepler-424 Er* 19 54 29.9854950120 +48 34 38.802689796   15.326 14.521 14.317   ~ 55 0
172 Kepler-720 Ro* 19 54 32.5577334264 +44 10 15.391105644           ~ 32 0
173 Kepler-720b Pl 19 54 32.5577334264 +44 10 15.391105644           ~ 18 0
174 KOI-5308 EB* 19 54 34.2131575968 +42 05 34.184607180           ~ 19 0
175 KOI-5308.01 Pl? 19 54 34.2131575968 +42 05 34.184607180           ~ 5 0
176 Kepler-463b Pl 19 55 44.8890304512 +44 51 28.481709276           ~ 24 0
177 Kepler-463 Er* 19 55 44.8890304512 +44 51 28.481709276   13.834 13.075 12.866   G0V 47 0
178 Kepler-471 EB* 19 56 23.4090904944 +43 29 51.340532928   14.538 13.887 13.724   ~ 38 0
179 Kepler-471b Pl 19 56 23.4090904944 +43 29 51.340532928           ~ 22 0
180 KOI-1154 EB* 19 56 24.6779262600 +47 22 40.017762876           ~ 22 0
181 KOI-1154.01 Pl? 19 56 24.6779262600 +47 22 40.017762876           ~ 5 0
182 Kepler-695 Ro* 19 57 15.8565428064 +40 49 20.575896924           ~ 28 0
183 Kepler-695b err 19 57 15.864 +40 49 20.57           ~ 16 0
184 Kepler-5b Pl 19 57 37.6884643560 +44 02 06.189718884           ~ 101 1
185 Kepler-5 Ro* 19 57 37.6884643560 +44 02 06.189718884           F5V 102 1
186 Kepler-718b Pl 19 58 14.8546391280 +43 30 12.810989196           ~ 17 0
187 Kepler-718 Ro* 19 58 14.8546391280 +43 30 12.810989196           ~ 32 0
188 KOI-1066.01 Pl? 19 59 08.7190563840 +44 10 10.416683640           ~ 17 0
189 KOI-1066 Ro* 19 59 08.7190563840 +44 10 10.416683640           ~ 23 0
190 Kepler-548 Ro* 19 59 37.4206571400 +45 26 22.831393344           K1 35 0
191 Kepler-548b Pl 19 59 37.4206571400 +45 26 22.831393344           ~ 19 0
192 Kepler-44 Er* 20 00 24.5656977240 +45 45 43.762595112   14.7   14.781   ~ 55 1
193 Kepler-44b Pl 20 00 24.5656977240 +45 45 43.762595112           ~ 44 1

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