Examining the orbital decay targets KELT-9 b, KELT-16 b, and WASP-4 b, and the transit-timing variations of HD 97658 b,
Artikel i vetenskaplig tidskrift, 2023
Context. Tidal orbital decay is suspected to occur for hot Jupiters in particular, with the only observationally confirmed case of this being WASP-12 b. By examining this effect, information on the properties of the host star can be obtained using the so-called stellar modified tidal quality factor Q′∗, which describes the efficiency with which the kinetic energy of the planet is dissipated within the star. This can provide information about the interior of the star. Aims. In this study, we aim to improve constraints on the tidal decay of the KELT-9, KELT-16, and WASP-4 systems in order to find evidence for or against the presence of tidal orbital decay. With this, we want to constrain the Q′∗ value for each star. In addition, we aim to test the existence of the transit timing variations (TTVs) in the HD 97658 system, which previously favoured a quadratic trend with increasing orbital period. Methods. Making use of newly acquired photometric observations from CHEOPS (CHaracterising ExOplanet Satellite) and TESS (Transiting Exoplanet Survey Satellite), combined with archival transit and occultation data, we use Markov chain Monte Carlo (MCMC) algorithms to fit three models to the data, namely a constant-period model, an orbital-decay model, and an apsidal-precession model. Results. We find that the KELT-9 system is best described by an apsidal-precession model for now, with an orbital decay trend at over 2 σ being a possible solution as well. A Keplerian orbit model with a constant orbital period provides the best fit to the transit timings of KELT-16 b because of the scatter and scale of their error bars. The WASP-4 system is best represented by an orbital decay model at a 5 σ significance, although apsidal precession cannot be ruled out with the present data. For HD 97658 b, using recently acquired transit observations, we find no conclusive evidence for a previously suspected strong quadratic trend in the data.
techniques: photometric
planets and satellites: dynamical evolution and stability
planet-star interactions
Författare
J. V. Harre
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
A. M.S. Smith
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
S. C.C. Barros
Universidade do Porto
G. Boue´
Observatoire de Paris
Szilard Csizmadia
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
D. Ehrenreich
Université de Genève
H.-G. Florén
Stockholms universitet
A. Fortier
Universität Bern
P. Maxted
Keele University
M.J. Hooton
University of Cambridge
Universität Bern
B. Akinsanmi
Universidade do Porto
Université de Genève
L. M. Serrano
Universita degli Studi di Torino
N. M. Rosário
Universidade do Porto
B.O. Demory
Universität Bern
K. Jones
Universität Bern
J. Laskar
Observatoire de Paris
V. Adibekyan
Universidade do Porto
Y. Alibert
Universität Bern
R. Alonso
Universidad de la Laguna
Instituto de Astrofísica de Canarias
D. R. Anderson
The University of Warwick
G. Anglada
Consejo Superior de Investigaciones Científicas (CSIC)
Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
J. Asquier
European Space Research and Technology Centre (ESA ESTEC)
T. Bárczy
Admatis
D. Barrado Y Navascues
European Space Astronomy Centre (ESAC)
W. Baumjohann
Institut fur Weltraumforschung
M. Beck
Université de Genève
T. Beck
Universität Bern
W. Benz
Universität Bern
N. Billot
Université de Genève
F. Biondi
Max-Planck-Gesellschaft
Istituto nazionale di astrofisica (INAF)
A. Bonfanti
Institut fur Weltraumforschung
X. Bonfils
Institut de Planétologie et d’Astrophysique de Grenoble (IPAG)
A. Brandeker
Stockholms universitet
C. Broeg
Universität Bern
J. Cabrera
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
V. Cessa
Universität Bern
S. Charnoz
Institut de Physique du Globe de Paris
A. Collier Cameron
University of St Andrews
M. B. Davies
Lunds universitet
M. Deleuil
Laboratoire d'Astrophysique de Marseille
L. Delrez
Universite de Liège
O. Demangeon
Universidade do Porto
Anders Erikson
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
L. Fossati
Institut fur Weltraumforschung
Malcolm Fridlund
Universiteit Leiden
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
D. Gandolfi
Universita degli Studi di Torino
Michaël Gillon
Universite de Liège
M. Gudel
Universität Wien
Coel Hellier
Keele University
Kevin Heng
Universität Bern
The University of Warwick
S. Hoyer
Laboratoire d'Astrophysique de Marseille
K. Isaak
European Space Research and Technology Centre (ESA ESTEC)
L.L. Kiss
Magyar Tudomanyos Akademia
Eötvös Loránd University (ELTE)
A. L. des Etangs
Institut d 'Astrophysique de Paris
M. Lendl
Université de Genève
C. Lovis
Université de Genève
A. Luntzer
Universität Wien
D. Magrin
Istituto nazionale di astrofisica (INAF)
Valerio Nascimbeni
Istituto nazionale di astrofisica (INAF)
G. Olofsson
Stockholms universitet
R. Ottensamer
Universität Wien
I. Pagano
Istituto nazionale di astrofisica (INAF)
E. Palle
Instituto de Astrofísica de Canarias
Carina Persson
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
G. Peter
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
Giampaolo P. Piotto
Università di Padova
Istituto nazionale di astrofisica (INAF)
D. Pollacco
The University of Warwick
D. Queloz
Eidgenössische Technische Hochschule Zürich (ETH)
University of Cambridge
Roberto Ragazzoni
Università di Padova
Istituto nazionale di astrofisica (INAF)
N. Rando
European Space Research and Technology Centre (ESA ESTEC)
H. Rauer
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
Technische Universität Berlin
Freie Universität Berlin
I. Ribas
Consejo Superior de Investigaciones Científicas (CSIC)
Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
G. R. Ricker
Massachusetts Institute of Technology (MIT)
S. Salmon
Université de Genève
N. C. Santos
Universidade do Porto
Gaetano Scandariato
Istituto nazionale di astrofisica (INAF)
S. Seager
Massachusetts Institute of Technology (MIT)
D. Segransan
Université de Genève
A.E. Simon
Universität Bern
S. G. Sousa
Universidade do Porto
Manfred B. Steller
Institut fur Weltraumforschung
Gy M. Szabó
Eötvös Loránd University (ELTE)
N. Thomas
Universität Bern
S. Udry
Université de Genève
B. Ulmer
Deutsches Zentrums für Luft- und Raumfahrt (DLR)
V. Van Grootel
Universite de Liège
N. A. Walton
University of Cambridge
T. G. Wilson
University of St Andrews
J. N. Winn
Princeton University
B. Wohler
National Aeronautics and Space Administration (NASA)
SETI Institute
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 669 A124Ämneskategorier (SSIF 2011)
Astronomi, astrofysik och kosmologi
Inbäddad systemteknik
Sannolikhetsteori och statistik
DOI
10.1051/0004-6361/202244529