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

Osservatorio Astronomico di Padova

Giampaolo P. Piotto

Osservatorio Astronomico di Padova

University of Padua

D. Gandolfi

Istituto nazionale di astrofisica (INAF)

Valerio Nascimbeni

Osservatorio Astronomico di Padova

G. Lacedelli

University of Padua

Osservatorio Astronomico di Padova

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

Instituto de Astrofísica de Canarias

University of La Laguna

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

C.W.M. Fridlund

Leiden University

Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics

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

Osservatorio Astronomico di Padova

M. Munari

Osservatorio Astronomico di Padova

G. Olofsson

Stockholm University

R. Ottensamer

University of Vienna

I. Pagano

Osservatorio Astronomico di Padova

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

Osservatorio Astronomico di Padova

N. Rando

European Space Research and Technology Centre (ESA ESTEC)

H. Rauer

Technische Universität Berlin

Freie Universität Berlin

German Aerospace Center (DLR)

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

Osservatorio Astronomico di Padova

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 3810-3830

Subject Categories

Analytical Chemistry

Astronomy, Astrophysics and Cosmology

Atom and Molecular Physics and Optics

DOI

10.1093/mnras/stab1782

More information

Latest update

10/13/2021