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An old warm Jupiter orbiting the metal-poor G-dwarf TOI-5542

Grieves, Nolan and Bouchy, François and Ulmer-Moll, Solène and Gill, Samuel and Anderson, David R. and Psaridi, Angelica and Lendl, Monika and Stassun, Keivan G. and Jenkins, Jon M. and Burleigh, Matthew R. and Acton, Jack S. and Boyd, Patricia T. and Casewell, Sarah L. and Eigmüller, Philipp and Goad, Michael R. and Goeke, Robert F. and Günther, Maximilian N. and Hawthorn, Faith and Henderson, Beth A. and Henze, Christopher E. and Jordán, Andrés and Kendall, Alicia and Mishra, Lokesh and Moyano, Maximiliano and Osborn, Hugh and Revol, Alexandre and Sefako, Ramotholo R. and Tilbrook, Rosanna H. and Udry, Stéphane and Unger, Nicolas and Vines, Jose I. and West, Richard G. and Worters, Hannah L. (2022) An old warm Jupiter orbiting the metal-poor G-dwarf TOI-5542. Astronomy & Astrophysics, 668, A29. EDP Sciences. doi: 10.1051/0004-6361/202244077. ISSN 0004-6361.

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Official URL: https://www.aanda.org/articles/aa/full_html/2022/12/aa44077-22/aa44077-22.html

Abstract

We report the discovery of a 1.32−0.10+0.10 MJup planet orbiting on a 75.12 day period around the G3V 10.8−3.6+2.1 Gyr old star TOI-5542 (TIC 466206508; TYC 9086-1210-1). The planet was first detected by the Transiting Exoplanet Survey Satellite (TESS) as a single transit event in TESS Sector 13. A second transit was observed 376 days later in TESS Sector 27. The planetary nature of the object has been confirmed by ground-based spectroscopic and radial velocity observations from the CORALIE and HARPS spectrographs. A third transit event was detected by the ground-based facilities NGTS, EulerCam, and SAAO. We find the planet has a radius of 1.009−0.035+0.036 RJup and an insolation of 9.6−0.8+0.9 S⊕, along with a circular orbit that most likely formed via disk migration or in situ formation, rather than high-eccentricity migration mechanisms. Our analysis of the HARPS spectra yields a host star metallicity of [Fe/H] = −0.21 ± 0.08, which does not follow the traditional trend of high host star metallicity for giant planets and does not bolster studies suggesting a difference among low- and high-mass giant planet host star metallicities. Additionally, when analyzing a sample of 216 well-characterized giant planets, we find that both high masses (4 MJup < Mp < 13 MJup) and low masses (0.5 MJup < Mp < 4 MJup), as well as both both warm (P > 10 days) and hot (P < 10 days) giant planets are preferentially located around metal-rich stars (mean [Fe/H] > 0.1). TOI-5542b is one of the oldest known warm Jupiters and it is cool enough to be unaffected by inflation due to stellar incident flux, making it a valuable contribution in the context of planetary composition and formation studies.

Item URL in elib:https://elib.dlr.de/193003/
Document Type:Article
Title:An old warm Jupiter orbiting the metal-poor G-dwarf TOI-5542
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Grieves, NolanObservatoire de Genève, Université de Genève, 51 Chemin Pegasi, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Bouchy, FrançoisObservatoire de Genève, Université de Genève, 51 Chemin Pegasi, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Ulmer-Moll, SolèneObservatoire de Genève, Université de Genève, 51 Chemin Pegasi, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Gill, SamuelDepartment of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Anderson, David R.Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Psaridi, AngelicaObservatoire de Genève, Université de Genève, 51 Chemin Pegasi, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Lendl, MonikaObservatoire de Genève, Université de Genève, 51 Chemin Pegasi, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Stassun, Keivan G.Vanderbilt University, Department of Physics & Astronomy, 6301 Stevenson Center Lane, Nashville, TN, 37235, USAUNSPECIFIEDUNSPECIFIED
Jenkins, Jon M.NASA Ames Research Center, Moffett Field, CA, 94035, USAUNSPECIFIEDUNSPECIFIED
Burleigh, Matthew R.School of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKUNSPECIFIEDUNSPECIFIED
Acton, Jack S.School of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKUNSPECIFIEDUNSPECIFIED
Boyd, Patricia T.Astrophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USAUNSPECIFIEDUNSPECIFIED
Casewell, Sarah L.School of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKUNSPECIFIEDUNSPECIFIED
Eigmüller, PhilippUNSPECIFIEDhttps://orcid.org/0000-0003-4096-0594UNSPECIFIED
Goad, Michael R.School of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKUNSPECIFIEDUNSPECIFIED
Goeke, Robert F.Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USAUNSPECIFIEDUNSPECIFIED
Günther, Maximilian N.European Space Agency (ESA), European Space Research and Technology Centre (ESTEC), Keplerlaan 1, 2201 AZ, Noordwijk, The NetherlandsUNSPECIFIEDUNSPECIFIED
Hawthorn, FaithDepartment of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Henderson, Beth A.School of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKUNSPECIFIEDUNSPECIFIED
Henze, Christopher E.NASA Ames Research Center, Moffett Field, CA, 94035, USAUNSPECIFIEDUNSPECIFIED
Jordán, AndrésFacultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Av. Diagonal las Torres 2640, Peñalolén, 7941169, Santiago, Chile; Millennium Institute for Astrophysics, Camino El Observatorio 1515, Las Condes, Casilla, Santiago, ChileUNSPECIFIEDUNSPECIFIED
Kendall, AliciaSchool of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKUNSPECIFIEDUNSPECIFIED
Mishra, LokeshObservatoire de Genève, Université de Genève, 51 Chemin Pegasi, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Moyano, MaximilianoInstituto de Astronomía, Universidad Católica del Norte, Angamos 0610, 1270709, Antofagasta, ChileUNSPECIFIEDUNSPECIFIED
Osborn, HughPhysikalisches Institut, University of Bern, Sidlerstrasse 5, 3012, Bern, Switzerland; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USAUNSPECIFIEDUNSPECIFIED
Revol, AlexandreObservatoire de Genève, Université de Genève, 51 Chemin Pegasi, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Sefako, Ramotholo R.South African Astronomical Observatory, PO Box 9, Observatory, 7935, Cape Town, South AfricaUNSPECIFIEDUNSPECIFIED
Tilbrook, Rosanna H.School of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UKUNSPECIFIEDUNSPECIFIED
Udry, StéphaneObservatoire de Genève, Université de Genève, 51 Chemin Pegasi, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Unger, NicolasObservatoire de Genève, Université de Genève, 51 Chemin Pegasi, 1290, Versoix, SwitzerlandUNSPECIFIEDUNSPECIFIED
Vines, Jose I.Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, ChileUNSPECIFIEDUNSPECIFIED
West, Richard G.Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UKUNSPECIFIEDUNSPECIFIED
Worters, Hannah L.South African Astronomical Observatory, PO Box 9, Observatory, 7935, Cape Town, South AfricaUNSPECIFIEDUNSPECIFIED
Date:December 2022
Journal or Publication Title:Astronomy & Astrophysics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:668
DOI:10.1051/0004-6361/202244077
Page Range:A29
Publisher:EDP Sciences
ISSN:0004-6361
Status:Published
Keywords:planets and satellites: detection; planets and satellites: dynamical evolution and stability; planets and satellites: formation; planets and satellites: fundamental parameters; planets and satellites: gaseous planets; Astrophysics - Earth and Planetary Astrophysics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Project PLATO - PMC and Science
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Extrasolar Planets and Atmospheres
Deposited By: Eigmüller, Dr. Philipp
Deposited On:05 Jan 2023 11:48
Last Modified:05 Jan 2023 11:48

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