Examining the orbital decay targets KELT-9 b, KELT-16 b, and WASP-4 b, and the transit-timing variations of HD 97658 b

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Harre, J. V.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),German Aerospace Center (DLR) (author)

Examining the orbital decay targets KELT-9 b, KELT-16 b, and WASP-4 b, and the transit-timing variations of HD 97658 b ,

Article/chapterEnglish2023

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2023-01-23
EDP Sciences,2023
electronicrdacarrier

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LIBRIS-ID:oai:research.chalmers.se:f3c65fbb-a2e9-4b5a-91bf-6cbcafca4dee
https://research.chalmers.se/publication/534530URI
https://doi.org/10.1051/0004-6361/202244529DOI
https://lup.lub.lu.se/record/4911b301-7016-4428-a476-de319bd54c15URI
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-215725URI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype
Subject category:ref swepub-contenttype

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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.

Subject headings and genre

NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Inbäddad systemteknik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Embedded Systems hsv//eng
NATURVETENSKAP Matematik Sannolikhetsteori och statistik hsv//swe
NATURAL SCIENCES Mathematics Probability Theory and Statistics hsv//eng
planets and satellites: dynamical evolution and stability
planet-star interactions
techniques: photometric
planet-star interactions
planets and satellites: dynamical evolution and stability
techniques: photometric
Decay (organic)
Extrasolar planets
Kinetic energy
Kinetics
Markov processes
Orbits
Photometry
Stars
Timing circuits
Decay model
Exo-planets
Orbital decay
Orbital periods
Planet-star interactions
Planets and satellites: dynamical evolution and stabilities
Precession model
Techniques: photometric
Timing variations
Transit timing
Satellites

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Smith, A. M.S.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Barros, S. C.C.Universidade do Porto,University of Porto (author)
Boue´, G.Observatoire de Paris,Paris Observatory (author)
Csizmadia, SzilardDeutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Ehrenreich, D.Université de Genève,University of Geneva (author)
Florén, Hans Gustav AxelStockholms universitet,Institutionen för astronomi(Swepub:su)flore (author)
Fortier, A.Universität Bern,University of Bern (author)
Maxted, P.Keele University (author)
Hooton, M.J.Universität Bern,University of Bern,University Of Cambridge (author)
Akinsanmi, B.Universidade do Porto,University of Porto,Université de Genève,University of Geneva (author)
Serrano, L. M.Universita degli Studi di Torino,University of Turin (author)
Rosário, N. M.Universidade do Porto,University of Porto (author)
Demory, B.O.Universität Bern,University of Bern (author)
Jones, K.Universität Bern,University of Bern (author)
Laskar, J.Observatoire de Paris,Paris Observatory (author)
Adibekyan, V.Universidade do Porto,University of Porto (author)
Alibert, Y.Universität Bern,University of Bern (author)
Alonso, R.Universidad de la Laguna,University of La Laguna,Instituto de Astrofísica de Canarias (author)
Anderson, D. R.The University of Warwick (author)
Anglada, G.Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC),Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC (author)
Asquier, J.European Space Research and Technology Centre (ESA ESTEC) (author)
Bárczy, T. (author)
Y Navascues, D. BarradoEuropean Space Astronomy Centre (ESAC) (author)
Baumjohann, W.NASA Ames Research Center,SETI Institute (author)
Davies, M.B.Lund University,Lunds universitet,Matematik (naturvetenskapliga fakulteten),Matematikcentrum,Institutioner vid LTH,Lunds Tekniska Högskola,LU profilområde: Naturlig och artificiell kognition,Lunds universitets profilområden,Mathematics (Faculty of Sciences),Centre for Mathematical Sciences,Departments at LTH,Faculty of Engineering, LTH,LU Profile Area: Natural and Artificial Cognition,Lund University Profile areas(Swepub:lu)astr-mda (author)
Beck, T.Universität Bern,University of Bern (author)
Benz, W.Universität Bern,University of Bern (author)
Billot, N.Université de Genève,University of Geneva (author)
Biondi, F.Istituto nazionale di astrofisica (INAF),Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
Bonfanti, A. (author)
Bonfils, X. (author)
Brandeker, AlexisStockholms universitet,Institutionen för astronomi(Swepub:su)alexis (author)
Broeg, C.Universität Bern,University of Bern (author)
Cabrera, J.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Cessa, V.Universität Bern,University of Bern (author)
Charnoz, S.Institut de Physique du Globe de Paris (author)
Cameron, A. CollierUniversity of St Andrews (author)
Davies, M. B.Lunds universitet,Lund University (author)
Deleuil, M.Laboratoire d'Astrophysique de Marseille (author)
Delrez, L.Universite de Liège,University of Liège (author)
Demangeon, O.Universidade do Porto,University of Porto (author)
Erikson, AndersDeutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Fossati, L. (author)
Fridlund, Malcolm,1952Chalmers tekniska högskola,Chalmers University of Technology,Universiteit Leiden (UL),Leiden University (UL)(Swepub:cth)malfri (author)
Gandolfi, D.Universita degli Studi di Torino,University of Turin (author)
Gillon, MichaëlUniversite de Liège,University of Liège (author)
Gudel, M.Universität Wien,University of Vienna (author)
Hellier, CoelKeele University (author)
Heng, KevinUniversität Bern,University of Bern,The University of Warwick (author)
Hoyer, S.Laboratoire d'Astrophysique de Marseille (author)
Isaak, K.European Space Research and Technology Centre (ESA ESTEC) (author)
Kiss, L.L.Magyar Tudomanyos Akademia,Hungarian Academy of Sciences,Eötvös Loránd University (ELTE) (author)
des Etangs, A. L.Institut d 'Astrophysique de Paris (author)
Lendl, M.Université de Genève,University of Geneva (author)
Lovis, C.Université de Genève,University of Geneva (author)
Luntzer, A.Universität Wien,University of Vienna (author)
Magrin, D.Istituto nazionale di astrofisica (INAF) (author)
Nascimbeni, ValerioIstituto nazionale di astrofisica (INAF) (author)
Olofsson, Göran,1944-Stockholms universitet,Institutionen för astronomi(Swepub:su)olofsson (author)
Ottensamer, R.Universität Wien,University of Vienna (author)
Pagano, I.Istituto nazionale di astrofisica (INAF) (author)
Palle, E.Instituto de Astrofísica de Canarias (author)
Persson, Carina,1964Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)carina64 (author)
Peter, G.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Piotto, Giampaolo P.Istituto nazionale di astrofisica (INAF),Università Degli Studi di Padova,University of Padua (author)
Pollacco, D.The University of Warwick (author)
Queloz, D.University Of Cambridge,Eidgenössische Technische Hochschule Zürich (ETH),Swiss Federal Institute of Technology in Zürich (ETH) (author)
Ragazzoni, RobertoIstituto nazionale di astrofisica (INAF),Università Degli Studi di Padova,University of Padua (author)
Rando, N.European Space Research and Technology Centre (ESA ESTEC) (author)
Rauer, H.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),Technische Universität Berlin,Freie Universität Berlin (author)
Ribas, I.Institut d'Estudis Espacials de Catalunya (IEEC),Institute of Space Studies of Catalonia (IEEC),Institut de Ciències de l'Espai (ICE) - CSIC,Institute of Space Sciences (ICE) - CSIC (author)
Ricker, G. R.Massachusetts Institute of Technology (MIT) (author)
Salmon, S.Université de Genève,University of Geneva (author)
Santos, N. C.Universidade do Porto,University of Porto (author)
Scandariato, GaetanoIstituto nazionale di astrofisica (INAF) (author)
Seager, S.Massachusetts Institute of Technology (MIT) (author)
Segransan, D.Université de Genève,University of Geneva (author)
Simon, A.E.Universität Bern,University of Bern (author)
Sousa, S. G.Universidade do Porto,University of Porto (author)
Steller, Manfred B. (author)
Szabó, Gy M.Eötvös Loránd University (ELTE) (author)
Thomas, N.Universität Bern,University of Bern (author)
Udry, S.Université de Genève,University of Geneva (author)
Ulmer, B.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Van Grootel, V.Universite de Liège,University of Liège (author)
Walton, N. A.University Of Cambridge (author)
Wilson, T. G.University of St Andrews (author)
Winn, J. N.Princeton University (author)
Wohler, B.SETI Institute,NASA Ames Research Center (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR)German Aerospace Center (DLR) (creator_code:org_t)

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By the author/editor: Harre, J. V.; Smith, A. M.S.; Barros, S. C.C.; Boue´, G.; Csizmadia, Szila ...; Ehrenreich, D.; show more...; Florén, Hans Gus ...; Fortier, A.; Maxted, P.; Hooton, M.J.; Akinsanmi, B.; Serrano, L. M.; Rosário, N. M.; Demory, B.O.; Jones, K.; Laskar, J.; Adibekyan, V.; Alibert, Y.; Alonso, R.; Anderson, D. R.; Anglada, G.; Asquier, J.; Bárczy, T.; Y Navascues, D. ...; Baumjohann, W.; Davies, M.B.; Beck, T.; Benz, W.; Billot, N.; Biondi, F.; Bonfanti, A.; Bonfils, X.; Brandeker, Alexi ...; Broeg, C.; Cabrera, J.; Cessa, V.; Charnoz, S.; Cameron, A. Coll ...; Davies, M. B.; Deleuil, M.; Delrez, L.; Demangeon, O.; Erikson, Anders; Fossati, L.; Fridlund, Malcol ...; Gandolfi, D.; Gillon, Michaël; Gudel, M.; Hellier, Coel; Heng, Kevin; Hoyer, S.; Isaak, K.; Kiss, L.L.; des Etangs, A. L ...; Lendl, M.; Lovis, C.; Luntzer, A.; Magrin, D.; Nascimbeni, Vale ...; Olofsson, Göran, ...; Ottensamer, R.; Pagano, I.; Palle, E.; Persson, Carina, ...; Peter, G.; Piotto, Giampaol ...; Pollacco, D.; Queloz, D.; Ragazzoni, Rober ...; Rando, N.; Rauer, H.; Ribas, I.; Ricker, G. R.; Salmon, S.; Santos, N. C.; Scandariato, Gae ...; Seager, S.; Segransan, D.; Simon, A.E.; Sousa, S. G.; Steller, Manfred ...; Szabó, Gy M.; Thomas, N.; Udry, S.; Ulmer, B.; Van Grootel, V.; Walton, N. A.; Wilson, T. G.; Winn, J. N.; Wohler, B.; show less...

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