Exploiting timing capabilities of the CHEOPS mission with warm-Jupiter planets
- Author(s)
- L. Borsato, G. Piotto, D. Gandolfi, Valerio Nascimbeni, G. Lacedelli, F. Marzari, N. Billot, P. F. L. Maxted, S. Sousa, A. C. Cameron, A. Bonfanti, T. G. Wilson, L. M. Serrano, Z. Garai, Y. Alibert, R. Alonso, J. Asquier, T. Barczy, T. Bandy, D. Barrado, S. C. C. Barros, W. Baumjohann, M. Beck, T. Beck, W. Benz, X. Bonfils, A. Brandeker, C. Broeg, J. Cabrera, S. Charnoz, S. Csizmadia, M. B. Davies, M. Deleuil, L. Delrez, O. Demangeon, B-O Demory, A. L. des Etangs, D. Ehrenreich, A. Erikson, G. A. Escude, A. Fortier, L. Fossati, M. Fridlund, M. Gillon, M. Guedel, J. Hasiba, K. Heng, S. Hoyer, K. G. Isaak, L. Kiss, E. Kopp, J. Laskar, M. Lendl, C. Lovis, D. Magrin, M. Munari, G. Olofsson, R. Ottensamer, Marco Pagano, E. Palle, G. Peter, D. Pollacco, D. Queloz, R. Ragazzoni, N. Rando, H. Rauer, Joan Ribas, D. Segransan, N. C. Santos, G. Scandariato, A. Simon, A. M. S. Smith, M. Steller, G. Szabo, N. Thomas, S. Udry, V. Van Grootel, N. Walton
- 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.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Osservatorio Astronomico, University of Padova, INAF-Osservatorio Astrofisico di Torino, Université de Genève, Keele University, Universidade do Porto, University of St. Andrews, Österreichische Akademie der Wissenschaften (ÖAW), Eötvös Loránd University Budapest, Slovak Academy of Sciences (SAS), Universität Bern, Institute of Astrophysics of the Canary Islands, University of La Laguna, Science and Operations Department - Science Division (SCI-SC), Admatis Ltd., Spanish National Research Council (CSIC), University of Grenoble Alpes, Stockholm University, Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Université de Paris, Lund University, Aix-Marseille Université, Université de Liège, Université Paris IV - Paris-Sorbonne, Universitat Autònoma de Barcelona , Leiden University, Chalmers University of Technology, University of Warwick, Hungarian Academy of Sciences, Paris Observatory, INAF-Osservatorio Astrofisico di Catania, University of Cambridge, Technische Universität Berlin, Freie Universität Berlin (FU)
- Journal
- Monthly Notices of the Royal Astronomical Society
- Volume
- 506
- Pages
- 3810-3830
- No. of pages
- 21
- ISSN
- 0035-8711
- DOI
- https://doi.org/10.1093/mnras/stab1782
- Publication date
- 09-2021
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy, 103004 Astrophysics, 103038 Space exploration
- Keywords
- ASJC Scopus subject areas
- Astronomy and Astrophysics, Space and Planetary Science
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/9f7ccb23-08c0-418a-9235-070062dd5bb7