The planetary system around HD 190622 (TOI-1054): Measuring the gas content of low-mass planets orbiting F-stars

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

The planetary system around HD 190622 (TOI-1054): Measuring the gas content of low-mass planets orbiting F-stars

Article/chapterEnglish2023

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2023
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LIBRIS-ID:oai:research.chalmers.se:6a4f6ec3-d4ee-4db1-a780-ef89385c9732
https://research.chalmers.se/publication/536914URI
https://doi.org/10.1051/0004-6361/202245774DOI
https://lup.lub.lu.se/record/3fdb48b0-cccd-4e52-8bc2-4ff49a53bf91URI
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-221688URI

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Language:English
Summary in:English

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Subject category:ref swepub-contenttype

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Context. Giant planets are known to dominate the long-term stability of planetary systems due to their prevailing gravitational interactions, but they are also thought to play an important role in planet formation. Observational constraints improve our understanding of planetary formation processes such as the delivery of volatile-rich planetesimals from beyond the ice line into the inner planetary system. Additional constraints may come from studies of the atmosphere, but almost all such studies of the atmosphere investigate the detection of certain species, and abundances are not routinely quantitatively measured. Aims. Accurate measurements of planetary bulk parameters-that is, mass and density-provide constraints on the inner structure and chemical composition of transiting planets. This information provides insight into properties such as the amounts of volatile species, which in turn can be related to formation and evolution processes. Methods. The Transiting Exoplanet Survey Satellite (TESS) reported a planetary candidate around HD 190622 (TOI-1054), which was subsequently validated and found to merit further characterization with photometric and spectroscopic facilities. The KESPRINT collaboration used data from the High Accuracy Radial Velocity Planet Searcher (HARPS) to independently confirm the planetary candidate, securing its mass, and revealing the presence of an outer giant planet in the system. The CHEOPS consortium invested telescope time in the transiting target in order to reduce the uncertainty on the radius, improving the characterization of the planet. Results. We present the discovery and characterization of the planetary system around HD 190622 (TOI-1054). This system hosts one transiting planet, which is smaller than Neptune (3.087-0.053+0.058REarth, 7.7 ± 1.0 MEarth) but has a similar bulk density (1.43 ± 0.21 g cm-3) and an orbital period of 16 days; and a giant planet, not known to be transiting, with a minimum mass of 227.0 ± 6.7 MEarth in an orbit with a period of 315 days. Conclusions. Our measurements constrain the structure and composition of the transiting planet. HD 190622b has singular properties among the known population of transiting planets, which we discuss in detail. Among the sub-Neptune-sized planets known today, this planet stands out because of its large gas content.

Subject headings and genre

NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
NATURVETENSKAP Fysik Annan fysik hsv//swe
NATURAL SCIENCES Physical Sciences Other Physics Topics hsv//eng
Planetary systems
Planets and satellites: detection
Planetary systems
Planets and satellites: detection
Extrasolar planets
Satellites
Formation process
Gas content
Giant planets
Gravitational interaction
Long term stability
Low-mass
Neptune
Planetary system
Planets and satellites: detections
Property
Orbits

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Gandolfi, D.Universita degli Studi di Torino,University of Turin (author)
Serrano, L. M.Universita degli Studi di Torino,University of Turin,Université de Genève,University of Geneva (author)
Csizmadia, SzilardDeutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR),Universidade do Porto,University of Porto (author)
Egger, J. A.Universität Bern,University of Bern,European Southern Observatory Santiago (author)
Baumeister, Ph.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Krenn, A.Harvard-Smithsonian Center for Astrophysics (author)
Benz, W.Universität Bern,University of Bern (author)
Deline, A.Université de Genève,University of Geneva (author)
Florén, Hans Gustav Axel,1962-Stockholms universitet,Institutionen för astronomi(Swepub:su)flore (author)
Collier Cameron, A.University of St Andrews (author)
Adibekyan, V.Universidade do Porto,University of Porto (author)
Alibert, Y.Universität Bern,University of Bern (author)
Bellomo, Salvatore E.Universita degli Studi di Torino,University of Turin (author)
Delrez, L.Universite de Liège,University of Liège (author)
Fossati, L.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Fortier, A.Universität Bern,University of Bern (author)
Grziwa, S.Universität zu Köln,University of Cologne,Universidade do Porto,University of Porto,Eötvös Loránd University (ELTE) (author)
Hoyer, S.Laboratoire d'Astrophysique de Marseille (author)
Bonfanti, A. (author)
Salmon, S.Université de Genève,University of Geneva,Institut de Physique du Globe de Paris,Wesleyan University,Massachusetts Institute of Technology (MIT),Universität Bern,University of Bern,Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Sousa, S.G.Universidade do Porto,University of Porto,Istituto nazionale di astrofisica (INAF) (author)
Wilson, T.G.University of St Andrews (author)
Alarcon, JavierEuropean Southern Observatory Santiago (author)
Alonso, R.Instituto de Astrofísica de Canarias (author)
Anglada Escude´, G.Consejo Nacional de Investigaciones Cientificas y Tecnicas,Universita degli Studi di Torino,University of Turin (author)
Bárczy, T. (author)
Barragán, O.University Of Oxford,Universität Bern,University of Bern (author)
Davies, M.B.Lund University,Lunds universitet,Matematik (naturvetenskapliga fakulteten),Matematikcentrum,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematics (Faculty of Sciences),Centre for Mathematical Sciences,Departments at LTH,Faculty of Engineering, LTH,Centro de Astrobiologia (CAB),Université de Genève,University of Geneva,Istituto nazionale di astrofisica (INAF)(Swepub:lu)astr-mda (author)
Barros, S.C.C.Universidade do Porto,University of Porto (author)
Baumjohann, W. (author)
Beck, M.Université de Genève,University of Geneva (author)
Beck, T.Universität Bern,University of Bern (author)
Bernabò, L.M.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Billot, N.Université de Genève,University of Geneva (author)
Bonfils, X. (author)
Borsato, L.Istituto nazionale di astrofisica (INAF) (author)
Brandeker, Alexis,1974-Stockholms universitet,Institutionen för astronomi(Swepub:su)alexis (author)
Broeg, C.Universität Bern,University of Bern (author)
Carrión-González, O.Technische Universität Berlin,Stockholms universitet,Stockholm University (author)
Charnoz, S.Institut de Physique du Globe de Paris,Universidade do Porto,University of Porto (author)
Ciardi, D. R.National Aeronautics and Space Administration (NASA),Istituto nazionale di astrofisica (INAF) (author)
Cochran, William D.The University of Texas at Austin, USA (author)
Collins, Karen A.Harvard-Smithsonian Center for Astrophysics (author)
Collins, Kevin I.George Mason University,European Space Research and Technology Centre (ESA ESTEC) (author)
Conti, D. (author)
Davies, Melvyn B.Lunds universitet,Lund University (author)
Deeg, H.Instituto de Astrofísica de Canarias (author)
Deleuil, M.Laboratoire d'Astrophysique de Marseille (author)
Demangeon, O.Universidade do Porto,University of Porto (author)
Demory, B.O.Universität Bern,University of Bern (author)
Ehrenreich, D.Université de Genève,University of Geneva (author)
Erikson, AndersDeutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Esposito, M.Thüringer Landessternwarte Tautenburg (author)
Fridlund, Malcolm,1952Universiteit Leiden (UL),Leiden University (UL)(Swepub:cth)malfri (author)
Gillon, MichaëlUniversite de Liège,University of Liège (author)
Goffo, E.Universita degli Studi di Torino,University of Turin (author)
Gudel, M.Universität Wien,University of Vienna (author)
Guenther, E. W.Thüringer Landessternwarte Tautenburg (author)
Harre, J. V.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Heng, KevinUniversität Bern,University of Bern (author)
Hooton, M.J.University Of Cambridge (author)
Isaak, K.European Space Research and Technology Centre (ESA ESTEC) (author)
Jenkins, Jon M.NASA Ames Research Center (author)
Kiss, L.Magyar Tudomanyos Akademia,Hungarian Academy of Sciences (author)
Knudstrup, E.Århus Universitet,Aarhus University (author)
Lam, K. W.F.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Laskar, J.Observatoire de Paris,Paris Observatory (author)
des Etangs, A. L.Centre national de la recherche scientifique (CNRS) (author)
Lendl, M.Université de Genève,University of Geneva,University College London (UCL) (author)
Lovis, C.Université de Genève,University of Geneva (author)
Luque, R.University of Chicago (author)
Magrin, D.Istituto nazionale di astrofisica (INAF) (author)
Maxted, P.Keele University (author)
Muresan, Alexandra,1997Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)muresan (author)
Nascimbeni, ValerioIstituto nazionale di astrofisica (INAF) (author)
Olofsson, G.Stockholms universitet,Stockholm University (author)
Osborn, H. P.Universität Bern,University of Bern (author)
Osborne, H. L.M.University College London (UCL) (author)
Ottensamer, R.Universität Wien,University of Vienna (author)
Pagano, I.Istituto nazionale di astrofisica (INAF) (author)
Palle, EnricInstituto 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),Istituto nazionale di astrofisica (INAF) (author)
Piotto, Giampaolo P.Istituto nazionale di astrofisica (INAF) (author)
Pollacco, Don L.The University of Warwick (author)
Queloz, D.University Of Cambridge (author)
Ragazzoni, RobertoIstituto nazionale di astrofisica (INAF),Massachusetts Institute of Technology (MIT) (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) (author)
Redfield, S.Wesleyan University (author)
Ribas, I.Consejo Nacional de Investigaciones Cientificas y Tecnicas (author)
Ricker, George R.Massachusetts Institute of Technology (MIT) (author)
Rodler, F.European Southern Observatory Santiago (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)
Smith, A. M.S.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Steller, Manfred B. (author)
Szabó, G.M.Eötvös Loránd University (ELTE) (author)
Thomas, NicolasUniversität Bern,University of Bern (author)
Tosi, N.Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR) (author)
Twicken, J. D.NASA Ames Research Center (author)
Udry, S.Université de Genève,University of Geneva (author)
Van Eylen, VincentUniversity College London (UCL) (author)
Van Grootel, V.Universite de Liège,University of Liège (author)
Walton, N. A.University Of Cambridge (author)
Winn, J. N.Princeton University (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR)German Aerospace Center (DLR) (creator_code:org_t)

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By the author/editor: Cabrera, J.; Gandolfi, D.; Serrano, L. M.; Csizmadia, Szila ...; Egger, J. A.; Baumeister, Ph.; show more...; Krenn, A.; Benz, W.; Deline, A.; Florén, Hans Gus ...; Collier Cameron, ...; Adibekyan, V.; Alibert, Y.; Bellomo, Salvato ...; Delrez, L.; Fossati, L.; Fortier, A.; Grziwa, S.; Hoyer, S.; Bonfanti, A.; Salmon, S.; Sousa, S.G.; Wilson, T.G.; Alarcon, Javier; Alonso, R.; Anglada Escude&a ...; Bárczy, T.; Barragán, O.; Davies, M.B.; Barros, S.C.C.; Baumjohann, W.; Beck, M.; Beck, T.; Bernabò, L.M.; Billot, N.; Bonfils, X.; Borsato, L.; Brandeker, Alexi ...; Broeg, C.; Carrión-González ...; Charnoz, S.; Ciardi, D. R.; Cochran, William ...; Collins, Karen A ...; Collins, Kevin I ...; Conti, D.; Davies, Melvyn B ...; Deeg, H.; Deleuil, M.; Demangeon, O.; Demory, B.O.; Ehrenreich, D.; Erikson, Anders; Esposito, M.; Fridlund, Malcol ...; Gillon, Michaël; Goffo, E.; Gudel, M.; Guenther, E. W.; Harre, J. V.; Heng, Kevin; Hooton, M.J.; Isaak, K.; Jenkins, Jon M.; Kiss, L.; Knudstrup, E.; Lam, K. W.F.; Laskar, J.; des Etangs, A. L ...; Lendl, M.; Lovis, C.; Luque, R.; Magrin, D.; Maxted, P.; Muresan, Alexand ...; Nascimbeni, Vale ...; Olofsson, G.; Osborn, H. P.; Osborne, H. L.M.; Ottensamer, R.; Pagano, I.; Palle, Enric; Persson, Carina, ...; Peter, G.; Piotto, Giampaol ...; Pollacco, Don L.; Queloz, D.; Ragazzoni, Rober ...; Rando, N.; Rauer, H.; Redfield, S.; Ribas, I.; Ricker, George R ...; Rodler, F.; Santos, N. C.; Scandariato, Gae ...; Seager, S.; Segransan, D.; Simon, A.E.; Smith, A. M.S.; Steller, Manfred ...; Szabó, G.M.; Thomas, Nicolas; Tosi, N.; Twicken, J. D.; Udry, S.; Van Eylen, Vince ...; Van Grootel, V.; Walton, N. A.; Winn, J. N.; show less...

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