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.; 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.

doi:10.1093/mnras/stab1782

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

Journal Article · 23 June 2021 · Monthly Notices of the Royal Astronomical Society

DOI: https://doi.org/10.1093/mnras/stab1782 · OSTI ID:1810892

; Piotto, G.;

;

; Marzari, F.; Billot, N.; Maxted, P. F. L.;

;

; Bonfanti, A.;

;

; Alibert, Y.; Alonso, R.; Asquier, J.; Bárczy, T.; Bandy, T.; Barrado, D. more »

ABSTRACT 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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Sponsoring Organization:: USDOE Office of Nuclear Energy (NE), Nuclear Fuel Cycle and Supply Chain

OSTI ID:: 1810892

Journal Information:: Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 3 Vol. 506; ISSN 0035-8711

Publisher:: Oxford University PressCopyright Statement

Country of Publication:: United Kingdom

Language:: English

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