2021MNRAS.506.3810B

Query : 2021MNRAS.506.3810B

2021MNRAS.506.3810B - Mon. Not. R. Astron. Soc., 506, 3810-3830 (2021/September-3)

Exploiting timing capabilities of the CHEOPS mission with warm-Jupiter planets.

BORSATO L., PIOTTO G., GANDOLFI D., NASCIMBENI V., LACEDELLI G., MARZARI F., BILLOT N., MAXTED P.F.L., SOUSA S., CAMERON A.C., BONFANTI A., WILSON T.G., SERRANO L.M., GARAI Z., ALIBERT Y., ALONSO R., ASQUIER J., BARCZY T., BANDY T., BARRADO D., BARROS S.C.C., BAUMJOHANN W., BECK M., BECK T., BENZ W., BONFILS X., BRANDEKER A., BROEG C., CABRERA J., CHARNOZ S., CSIZMADIA S., DAVIES M.B., DELEUIL M., DELREZ L., DEMANGEON O., DEMORY B.-O., LECAVELIER DES ETANGS A., EHRENREICH D., ERIKSON A., ESCUDE G.A., FORTIER A., FOSSATI L., FRIDLUND M., GILLON M., GUEDEL M., HASIBA J., HENG K., HOYER S., ISAAK K.G., KISS L., KOPP E., LASKAR J., LENDL M., LOVIS C., MAGRIN D., MUNARI M., OLOFSSON G., OTTENSAMER R., PAGANO I., PALLE E., PETER G., POLLACCO D., QUELOZ D., RAGAZZONI R., RANDO N., RAUER H., RIBAS I., SEGRANSAN D., SANTOS N.C., SCANDARIATO G., SIMON A., SMITH A.M.S., STELLER M., SZABO G., THOMAS N., UDRY S., VAN GROOTEL V. and WALTON N.

Abstract (from CDS):

We present 17 transit light curves of seven known warm-Jupiters observed with the CHaracterising ExOPlanet Satellite (CHEOPS). The light curves have been collected as part of the CHEOPS Guaranteed Time Observation (GTO) program that searches for transit-timing variation (TTV) of warm-Jupiters induced by a possible external perturber to shed light on the evolution path of such planetary systems. We describe the CHEOPS observation process, from the planning to the data analysis. In this work, we focused on the timing performance of CHEOPS, the impact of the sampling of the transit phases, and the improvement we can obtain by combining multiple transits together. We reached the highest precision on the transit time of about 13-16 s for the brightest target (WASP-38, G = 9.2) in our sample. From the combined analysis of multiple transits of fainter targets with G >= 11, we obtained a timing precision of ∼2 min. Additional observations with CHEOPS, covering a longer temporal baseline, will further improve the precision on the transit times and will allow us to detect possible TTV signals induced by an external perturber.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): techniques: photometric - planets and satellites: individual: HAT-P-17 b, KELT-6 b, WASP-8 b, WASP-38 b, WASP-106 b, WASP-130 b, K2-287 b

VizieR on-line data: <Available at CDS (J/MNRAS/506/3810): list.dat tablea1.dat-tablea17.dat>

Simbad objects: 21

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Number of rows : 21
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 WT 2353 PM* 00 29 12.3029193648 -30 27 13.466857032   13.05 11.95     ~ 64 0
2 HD 93396b Pl 10 46 49.7401839144 -09 23 56.495447700           ~ 54 0
3 WASP-106b Pl 11 05 43.1362759752 -05 04 45.943633812           ~ 18 0
4 WASP-106 EB* 11 05 43.1362759752 -05 04 45.943633812   12.04 11.21     F9 27 0
5 HD 108236 PM* 12 26 17.8919204184 -51 21 46.215656244   9.89 9.24     G5V 43 0
6 BD+31 2447 EB* 13 03 55.6466582304 +30 38 24.278530344   10.837 10.337   9.745 F8 41 1
7 BD+31 2447b Pl 13 03 55.6466582304 +30 38 24.278530344           ~ 43 1
8 BD+31 2447c Pl 13 03 55.6466582304 +30 38 24.278530344           ~ 9 0
9 CD-41 7923b Pl 13 32 25.4361354312 -42 28 30.964064160           ~ 20 0
10 CD-41 7923 * 13 32 25.4361354312 -42 28 30.964064160   11.77 11.10     ~ 22 0
11 WASP-189b Pl? 15 02 44.8678907928 -03 01 52.986571896           ~ 82 0
12 K2-287 * 15 32 17.8469564328 -22 21 29.764289520   12.01 11.308 11.04 10.309 ~ 18 0
13 K2-287b Pl 15 32 17.8469564328 -22 21 29.764289520           ~ 13 0
14 HD 146389 PM* 16 15 50.3653280520 +10 01 57.284258556   9.866 9.39 9.22   F8 57 1
15 HD 146389b Pl 16 15 50.3653280520 +10 01 57.284258556           ~ 54 1
16 HAT-P-17c Pl 21 38 08.7310010424 +30 29 19.446386748           ~ 13 1
17 HAT-P-17 PM* 21 38 08.7310010424 +30 29 19.446386748   11.33 10.38 10.24   G0 63 1
18 HAT-P-17b Pl 21 38 08.7310010424 +30 29 19.446386748           ~ 82 1
19 WASP-47 * 22 04 48.7261549272 -12 01 07.998743676     11.99 11.82   ~ 164 1
20 CD-35 16019 PM* 23 59 36.0711872328 -35 01 52.923618408   10.49 9.87 9.91   G6 111 0
21 CD-35 16019b Pl 23 59 36.0711872328 -35 01 52.923618408           ~ 129 0

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