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:

Authors	Institution or Email of Authors	Author's ORCID iD	ORCID Put Code
Hobson, Melissa J.	Millennium Institute for Astrophysics, Chile; Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Chile	UNSPECIFIED	UNSPECIFIED
Brahm, Rafael	Center of Astro-Engineering UC, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile; Millennium Institute for Astrophysics, Santiago,Chile	UNSPECIFIED	UNSPECIFIED
Jordán, Andrés	Millennium Institute for Astrophysics, Santiago,Chile; Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Av. Diagonal las Torres 2640, Peñalolén, Santiago, Chile	UNSPECIFIED	UNSPECIFIED
Espinoza, Néstor	Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA	UNSPECIFIED	UNSPECIFIED
Kossakowski, Diana	Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany	UNSPECIFIED	UNSPECIFIED
Henning, Thomas	Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany	UNSPECIFIED	UNSPECIFIED
Rojas, Felipe	Millennium Institute for Astrophysics, Chile; Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Chile	UNSPECIFIED	UNSPECIFIED
Schlecker, Martin	Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany	UNSPECIFIED	UNSPECIFIED
Sarkis, Paula	Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany	UNSPECIFIED	UNSPECIFIED
Trifonov, Trifon	Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany	UNSPECIFIED	UNSPECIFIED
Thorngren, Daniel	University of Montréal, Montréal, QC, Canada	UNSPECIFIED	UNSPECIFIED
Binnenfeld, Avraham	Porter School of the Environment and Earth Sciences, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel	UNSPECIFIED	UNSPECIFIED
Shahaf, Sahar	School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel	UNSPECIFIED	UNSPECIFIED
Zucker, Shay	Porter School of the Environment and Earth Sciences, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel)	UNSPECIFIED	UNSPECIFIED
Ricker, George R.	Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA	UNSPECIFIED	UNSPECIFIED
Latham, David W.	Center for Astrophysics, Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138, USA	UNSPECIFIED	UNSPECIFIED
Seager, S.	Department of Terrestrial Magnetism, Carnegie Institution of Washington, USA	UNSPECIFIED	UNSPECIFIED
Winn, Joshua N.	Department of Astrophysics Sciences, Princeton University, 4 Ivy Lane, Priceton, NJ 08544, USA	UNSPECIFIED	UNSPECIFIED
Jenkins, Jon M.	NASA Ames Research Center, Moffett Field, CA, USA	UNSPECIFIED	UNSPECIFIED
Addison, Brett	University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350 Australia	UNSPECIFIED	UNSPECIFIED
Bouchy, Francois	Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, CH-1290 Sauverny, Switzerland	UNSPECIFIED	UNSPECIFIED
Bowler, Brendan P.	Department of Astronomy, The University of Texas at Austin, TX 78712, USA	UNSPECIFIED	UNSPECIFIED
Briegal, Joshua T.	Astrophysics Group, Cavendish Laboratory, J. J. Thomson Avenue, Cambridge CB3 0HE, UK	UNSPECIFIED	UNSPECIFIED
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, UK	UNSPECIFIED	UNSPECIFIED
Collins, Karen A.	Center for Astrophysics, Harvard and Smithsonian, Cambridge, MA, USA	UNSPECIFIED	UNSPECIFIED
Daylan, Tansu	Kavli Fellow.; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA	UNSPECIFIED	UNSPECIFIED
Grieves, Nolan	Observatoire astronomique de l'Université de Genève, Chemin des maillettes 51, 1290 Sauverny, Switzerland	UNSPECIFIED	UNSPECIFIED
Horner, Jonathan	Open University, Milton Keynes, UK	UNSPECIFIED	UNSPECIFIED
Huang, Chelsea X.	Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA	UNSPECIFIED	UNSPECIFIED
Kane, Stephen R.	Department of Earth and Planetary Sciences, University of California, Riverside, CA 92521, USA	UNSPECIFIED	UNSPECIFIED
Kielkopf, J.F.	Department of Physics and Astronomy, University of Louisville,Louisville, KY 40292, USA	UNSPECIFIED	UNSPECIFIED
McLean, B.	Space Telescope Science Institute, Baltimore, MD 21218, United States	UNSPECIFIED	UNSPECIFIED
Mengel, Matthew W.	University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia	UNSPECIFIED	UNSPECIFIED
Nielsen, Louise D.	Observatoire Astronomique de l'Université de Genève, 51 Ch. des Maillettes, CH-1290 Versoix, Switzerland	UNSPECIFIED	UNSPECIFIED
Okumura, Jack	University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350 Australia	UNSPECIFIED	UNSPECIFIED
Jones, Matias	European Southern Observatory(ESO), Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile	UNSPECIFIED	UNSPECIFIED
Plavchan, P.	Department of Physics and Astronomy, George Mason University,4400 University Drive, Fairfax, VA 22030, USA	UNSPECIFIED	UNSPECIFIED
Shporer, A.	Department of Physics and Kavli Institute for Astrophysics and Space Research, MIT, Cambridge, MA, 02139, USA	UNSPECIFIED	UNSPECIFIED
Smith, Alexis M. S.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Tilbrook, R.H.	Department of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UK	UNSPECIFIED	UNSPECIFIED
Tinney, C. G.	Exoplanetary Science at UNSW, School of Physics, UNSW Sydney, NSW 2052, Australia	UNSPECIFIED	UNSPECIFIED
Twicken, Joseph D.	NASA Ames Research Center, Moffett Field, CA 94035, USA; SETI Institute, 189 Bernardo Ave., Suite 200, Mountain View, CA 94043, USA	UNSPECIFIED	UNSPECIFIED
Udry, Stephane	Observatoire Astronomique de l'Université de Genève, 51 Ch. des Maillettes, CH-1290 Versoix, Switzerland	UNSPECIFIED	UNSPECIFIED
Unger, Nicolas	Geneva Observatory, University of Geneva, Chemin des Mailettes 51, 1290 Versoix, Switzerland	UNSPECIFIED	UNSPECIFIED
West, R. G.	Dept. of Physics, University of Warwick, United Kingdom	UNSPECIFIED	UNSPECIFIED
Wittenmyer, Robert A.	University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350 Australia	UNSPECIFIED	UNSPECIFIED
Wohler, Bill	NASA Ames Research Center, Moffett Field, CA 94035, USA; SETI Institute, Mountain View, CA 94043, USA	UNSPECIFIED	UNSPECIFIED
Torres, Pascal	Center of Astro-Engineering UC, Pontificia Universidad Católica de Chile, Santiago, Chile	UNSPECIFIED	UNSPECIFIED
Wright, Duncan J.	University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350 Australia	UNSPECIFIED	UNSPECIFIED

Date:

May 2021

Journal or Publication Title:

The Astronomical Journal

Refereed publication:

Yes

Open Access:

Yes

Gold Open Access:

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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