Bibcode
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.; Bárczy, 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.; des Etangs, A. L.; Ehrenreich, D.; Erikson, A.; Escudé, 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.; Pallé, E.; Peter, G.; Pollacco, D.; Queloz, D.; Ragazzoni, R.; Rando, N.; Rauer, H.; Ribas, I.; Ségransan, D.; Santos, N. C.; Scandariato, G.; Simon, A.; Smith, A. M. S.; Steller, M.; Szabó, G.; Thomas, N.; Udry, S.; Van Grootel, V.; Walton, N.
Bibliographical reference
Monthly Notices of the Royal Astronomical Society
Advertised on:
9
2021
Citations
22
Refereed citations
20
Description
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.
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Exoplanets and Astrobiology
The search for life in the universe has been driven by recent discoveries of planets around other stars (known as exoplanets), becoming one of the most active fields in modern astrophysics. The growing number of new exoplanets discovered in recent years and the recent advance on the study of their atmospheres are not only providing new valuable
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Pallé Bago