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A Transiting Warm Giant Planet around the Young Active Star TOI-201

Hobson, Melissa J. and Brahm, Rafael and Jordán, Andrés and Espinoza, Néstor and Kossakowski, Diana and Henning, Thomas and Rojas, Felipe and Schlecker, Martin and Sarkis, Paula and Trifonov, Trifon and Thorngren, Daniel and Binnenfeld, Avraham and Shahaf, Sahar and Zucker, Shay and Ricker, George R. and Latham, David W. and Seager, S. and Winn, Joshua N. and Jenkins, Jon M. and Addison, Brett and Bouchy, Francois and Bowler, Brendan P. and Briegal, Joshua T. and Bryant, Edward M. and Collins, Karen A. and Daylan, Tansu and Grieves, Nolan and Horner, Jonathan and Huang, Chelsea X. and Kane, Stephen R. and Kielkopf, J.F. and McLean, B. and Mengel, Matthew W. and Nielsen, Louise D. and Okumura, Jack and Jones, Matias and Plavchan, P. and Shporer, A. and Smith, Alexis M. S. and Tilbrook, R.H. and Tinney, C. G. and Twicken, Joseph D. and Udry, Stephane and Unger, Nicolas and West, R. G. and Wittenmyer, Robert A. and Wohler, Bill and Torres, Pascal and Wright, Duncan J. (2021) A Transiting Warm Giant Planet around the Young Active Star TOI-201. The Astronomical Journal, 161 (5), p. 235. IOP Publishing. doi: 10.3847/1538-3881/abeaa1. ISSN 0004-6256.

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Official URL: https://iopscience.iop.org/article/10.3847/1538-3881/abeaa1

Abstract

We present the confirmation of the eccentric warm giant planet TOI-201 b, first identified as a candidate in Transiting Exoplanet Survey Satellite photometry (Sectors 1-8, 10-13, and 27-28) and confirmed using ground-based photometry from Next Generation Transit Survey and radial velocities from FEROS, HARPS, CORALIE, and MINERVA-Australis. TOI-201 b orbits a young ( 0.87+0.46−0.49Gyr ) and bright (V = 9.07 mag) F-type star with a 52.9781 day period. The planet has a mass of 0.42+0.05−0.03MJ , a radius of 1.008+0.012−0.015RJ , and an orbital eccentricity of 0.28+0.06−0.09; it appears to still be undergoing fairly rapid cooling, as expected given the youth of the host star. The star also shows long-term variability in both the radial velocities and several activity indicators, which we attribute to stellar activity. The discovery and characterization of warm giant planets such as TOI-201 b are important for constraining formation and evolution theories for giant planets.

Item URL in elib:https://elib.dlr.de/142181/
Document Type:Article
Title:A Transiting Warm Giant Planet around the Young Active Star TOI-201
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Hobson, Melissa J.Millennium Institute for Astrophysics, Chile; Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, ChileUNSPECIFIED
Brahm, RafaelCenter of Astro-Engineering UC, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile; Millennium Institute for Astrophysics, Santiago,ChileUNSPECIFIED
Jordán, AndrésMillennium Institute for Astrophysics, Santiago,Chile; Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Av. Diagonal las Torres 2640, Peñalolén, Santiago, ChileUNSPECIFIED
Espinoza, NéstorSpace Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USAUNSPECIFIED
Kossakowski, DianaMax-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, GermanyUNSPECIFIED
Henning, ThomasMax-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, GermanyUNSPECIFIED
Rojas, FelipeMillennium Institute for Astrophysics, Chile; Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, ChileUNSPECIFIED
Schlecker, MartinMax-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, GermanyUNSPECIFIED
Sarkis, PaulaMax-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, GermanyUNSPECIFIED
Trifonov, TrifonMax-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, GermanyUNSPECIFIED
Thorngren, DanielUniversity of Montréal, Montréal, QC, CanadaUNSPECIFIED
Binnenfeld, AvrahamPorter School of the Environment and Earth Sciences, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 6997801, IsraelUNSPECIFIED
Shahaf, SaharSchool of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 6997801, IsraelUNSPECIFIED
Zucker, ShayPorter School of the Environment and Earth Sciences, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel)UNSPECIFIED
Ricker, George R.Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USAUNSPECIFIED
Latham, David W.Center for Astrophysics, Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138, USAUNSPECIFIED
Seager, S.Department of Terrestrial Magnetism, Carnegie Institution of Washington, USAUNSPECIFIED
Winn, Joshua N.Department of Astrophysics Sciences, Princeton University, 4 Ivy Lane, Priceton, NJ 08544, USAUNSPECIFIED
Jenkins, Jon M.NASA Ames Research Center, Moffett Field, CA, USAUNSPECIFIED
Addison, BrettUniversity of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350 AustraliaUNSPECIFIED
Bouchy, FrancoisObservatoire de Genève, Université de Genève, 51 Ch. des Maillettes, CH-1290 Sauverny, SwitzerlandUNSPECIFIED
Bowler, Brendan P.Department of Astronomy, The University of Texas at Austin, TX 78712, USAUNSPECIFIED
Briegal, Joshua T.Astrophysics Group, Cavendish Laboratory, J. J. Thomson Avenue, Cambridge CB3 0HE, UKUNSPECIFIED
Bryant, Edward M.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, UKUNSPECIFIED
Collins, Karen A.Center for Astrophysics, Harvard and Smithsonian, Cambridge, MA, USAUNSPECIFIED
Daylan, TansuKavli Fellow.; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USAUNSPECIFIED
Grieves, NolanObservatoire astronomique de l'Université de Genève, Chemin des maillettes 51, 1290 Sauverny, SwitzerlandUNSPECIFIED
Horner, JonathanOpen University, Milton Keynes, UKUNSPECIFIED
Huang, Chelsea X.Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USAUNSPECIFIED
Kane, Stephen R.Department of Earth and Planetary Sciences, University of California, Riverside, CA 92521, USAUNSPECIFIED
Kielkopf, J.F.Department of Physics and Astronomy, University of Louisville,Louisville, KY 40292, USAUNSPECIFIED
McLean, B.Space Telescope Science Institute, Baltimore, MD 21218, United StatesUNSPECIFIED
Mengel, Matthew W.University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350, AustraliaUNSPECIFIED
Nielsen, Louise D.Observatoire Astronomique de l'Université de Genève, 51 Ch. des Maillettes, CH-1290 Versoix, SwitzerlandUNSPECIFIED
Okumura, JackUniversity of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350 AustraliaUNSPECIFIED
Jones, MatiasEuropean Southern Observatory(ESO), Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, ChileUNSPECIFIED
Plavchan, P.Department of Physics and Astronomy, George Mason University,4400 University Drive, Fairfax, VA 22030, USAUNSPECIFIED
Shporer, A.Department of Physics and Kavli Institute for Astrophysics and Space Research, MIT, Cambridge, MA, 02139, USAUNSPECIFIED
Smith, Alexis M. S.alexis.smith (at) dlr.deUNSPECIFIED
Tilbrook, R.H.Department of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UKUNSPECIFIED
Tinney, C. G.Exoplanetary Science at UNSW, School of Physics, UNSW Sydney, NSW 2052, AustraliaUNSPECIFIED
Twicken, Joseph D.NASA Ames Research Center, Moffett Field, CA 94035, USA; SETI Institute, 189 Bernardo Ave., Suite 200, Mountain View, CA 94043, USAUNSPECIFIED
Udry, StephaneObservatoire Astronomique de l'Université de Genève, 51 Ch. des Maillettes, CH-1290 Versoix, SwitzerlandUNSPECIFIED
Unger, NicolasGeneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290 Versoix, SwitzerlandUNSPECIFIED
West, R. G.Dept. of Physics, University of Warwick, United KingdomUNSPECIFIED
Wittenmyer, Robert A.University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350 AustraliaUNSPECIFIED
Wohler, BillNASA Ames Research Center, Moffett Field, CA 94035, USA; SETI Institute, Mountain View, CA 94043, USAUNSPECIFIED
Torres, PascalCenter of Astro-Engineering UC, Pontificia Universidad Católica de Chile, Santiago, ChileUNSPECIFIED
Wright, Duncan J.University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350 AustraliaUNSPECIFIED
Date:May 2021
Journal or Publication Title:The Astronomical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:161
DOI :10.3847/1538-3881/abeaa1
Page Range:p. 235
Publisher:IOP Publishing
ISSN:0004-6256
Status:Published
Keywords:Exoplanet astronomy; Exoplanet detection methods; Transit photometry; Radial velocity
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: Smith, Dr Alexis M S
Deposited On:12 May 2021 08:01
Last Modified:12 May 2021 08:01

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