Exploiting timing capabilities of the CHEOPS mission with warm-Jupiter planets
Journal article, 2021
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.
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
Techniques: photometric
Author
L. Borsato
Istituto nazionale di astrofisica (INAF)
Giampaolo P. Piotto
Istituto nazionale di astrofisica (INAF)
University of Padua
D. Gandolfi
Istituto nazionale di astrofisica (INAF)
Valerio Nascimbeni
Istituto nazionale di astrofisica (INAF)
G. Lacedelli
Istituto nazionale di astrofisica (INAF)
University of Padua
F. Marzari
University of Padua
N. Billot
University of Geneva
P. Maxted
Keele University
S.G. Sousa
University of Porto
A. C. Cameron
University of St Andrews
A. Bonfanti
Institut fur Weltraumforschung
T.G. Wilson
University of St Andrews
L. M. Serrano
Istituto nazionale di astrofisica (INAF)
Z. Garai
Eötvös Loránd University (ELTE)
Slovak Academy of Sciences
Y. Alibert
University of Bern
R. Alonso
University of La Laguna
Instituto de Astrofísica de Canarias
J. Asquier
European Space Research and Technology Centre (ESA ESTEC)
T. Bárczy
Admatis
T. Bandy
University of Bern
D. Barrado
European Space Astronomy Centre (ESAC)
S.C.C. Barros
University of Porto
W. Baumjohann
Institut fur Weltraumforschung
M. Beck
University of Geneva
T. Beck
University of Bern
W. Benz
University of Bern
X. Bonfils
Grenoble Alpes University
A. Brandeker
Stockholm University
C. Broeg
University of Bern
J. Cabrera
German Aerospace Center (DLR)
S. Charnoz
Institut de Physique du Globe de Paris
Szilard Csizmadia
German Aerospace Center (DLR)
M. B. Davies
Lund University
M. Deleuil
Lund University
L. Delrez
University of Liège
University of Geneva
O. Demangeon
University of Porto
B.O. Demory
University of Bern
A. L. Des Etangs
Institut d 'Astrophysique de Paris
D. Ehrenreich
University of Geneva
Anders Erikson
German Aerospace Center (DLR)
G. A. Escudé
Institute of Space Sciences (ICE) - CSIC
Institute of Space Studies of Catalonia (IEEC)
A. Fortier
University of Bern
L. Fossati
Institut fur Weltraumforschung
Malcolm Fridlund
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Leiden University
Michaël Gillon
University of Liège
M. Guedel
University of Vienna
J. Hasiba
Institut fur Weltraumforschung
Kevin Heng
University of Bern
The University of Warwick
S. Hoyer
Laboratoire d'Astrophysique de Marseille
K. Isaak
European Space Research and Technology Centre (ESA ESTEC)
L. Kiss
Hungarian Academy of Sciences
E. Kopp
German Aerospace Center (DLR)
J. Laskar
Paris Observatory
M. Lendl
University of Geneva
C. Lovis
University of Geneva
D. Magrin
Istituto nazionale di astrofisica (INAF)
M. Munari
Istituto nazionale di astrofisica (INAF)
G. Olofsson
Stockholm University
R. Ottensamer
University of Vienna
I. Pagano
Istituto nazionale di astrofisica (INAF)
Enric Palle
Instituto de Astrofísica de Canarias
University of La Laguna
G. Peter
German Aerospace Center (DLR)
Don L. Pollacco
The University of Warwick
D. Queloz
University of Cambridge
University of Geneva
Roberto Ragazzoni
University of Padua
Istituto nazionale di astrofisica (INAF)
N. Rando
European Space Research and Technology Centre (ESA ESTEC)
H. Rauer
Freie Universität Berlin
German Aerospace Center (DLR)
Technische Universität Berlin
I. Ribas
Institute of Space Studies of Catalonia (IEEC)
Institute of Space Sciences (ICE) - CSIC
D. Segransan
University of Geneva
N. C. Santos
University of Porto
Gaetano Scandariato
Istituto nazionale di astrofisica (INAF)
A.E. Simon
University of Bern
Alexis M. S. Smith
German Aerospace Center (DLR)
Manfred B. Steller
Institut fur Weltraumforschung
G.M. Szabó
Eötvös Loránd University (ELTE)
Nicolas Thomas
University of Bern
S. Udry
University of Geneva
V. Van Grootel
University of Liège
N. A. Walton
University of Cambridge
Monthly Notices of the Royal Astronomical Society
0035-8711 (ISSN) 1365-2966 (eISSN)
Vol. 506 3 3810-3830Subject Categories
Analytical Chemistry
Astronomy, Astrophysics and Cosmology
Atom and Molecular Physics and Optics
DOI
10.1093/mnras/stab1782