Mass determination of two Jupiter-sized planets orbiting slightly evolved stars: TOI-2420 b and TOI-2485 b
Artikel i vetenskaplig tidskrift, 2024

Context. Hot and warm Jupiters might have undergone the same formation and evolution path, but the two populations exhibit different distributions of orbital parameters. This challenges our understanding of their actual origin. Aims. We report the results of our warm Jupiters survey, which was carried out with the CHIRON spectrograph within the KESPRINT collaboration. We addressed the question of the population origin by studying two planets that might help to bridge the gap between the two populations. Methods. We confirm two planets and determine their mass. One is a hot Jupiter (with an orbital period shorter than 10 days), TOI-2420 b, and the other is a warm Jupiter, TOI-2485 b. We analyzed them using a wide variety of spectral and photometric data in order to characterize these planetary systems. Results. We found that TOI-2420 b has an orbital period of Pb = 5.8 days, a mass of Mb = 0.9 MJ, and a radius of Rb = 1.3 RJ, with a planetary density of 0.477 g cm-3. TOI-2485 b has an orbital period of Pb = 11.2 days, a mass of Mb = 2.4 MJ, and a radius of Rb = 1.1 RJ with a density of 2.36 g cm-3. Conclusions. With the current parameters, the migration history for TOI-2420 b and TOI-2485 b is unclear: Scenarios of a high-eccentricity migration cannot be ruled out, and the characteristics of TOI-2485 b even support this scenario.

Planets and satellites: gaseous planets

Planets and satellites: detection

Författare

Ilaria Carleo

Istituto nazionale di astrofisica (INAF)

Instituto de Astrofísica de Canarias

Universidad de la Laguna

O. Barragán

University of Oxford

Carina Persson

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

Malcolm Fridlund

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

Universiteit Leiden

K. W.F. Lam

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

Sergio Messina

Istituto nazionale di astrofisica (INAF)

D. Gandolfi

Universita degli Studi di Torino

A. M.S. Smith

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

M.C. Johnson

Ohio State University

William Cochran

College of Natural Sciences

H. L.M. Osborne

University College London (UCL)

European Southern Observatory (ESO)

Rafael Brahm

Universidad Adolfo Ibanez

Instituto Milenio de Astrofísica

D. R. Ciardi

National Aeronautics and Space Administration (NASA)

Karen A. Collins

Harvard-Smithsonian Center for Astrophysics

M.E. Everett

NOIRLab

S. Giacalone

California Institute of Technology (Caltech)

E. W. Guenther

Thüringer Landessternwarte Tautenburg

A. Hatzes

Thüringer Landessternwarte Tautenburg

Coel Hellier

Keele University

Jonathan Horner

University of Southern Queensland

Petr Kabath

Czech Academy of Sciences

Judith Korth

Lunds universitet

P. MacQueen

College of Natural Sciences

T. Masseron

Instituto de Astrofísica de Canarias

Universidad de la Laguna

F. Murgas

Universidad de la Laguna

Instituto de Astrofísica de Canarias

G. Nowak

Uniwersytet Mikolaja Kopernika

Instituto de Astrofísica de Canarias

Universidad de la Laguna

Joseph E. Rodriguez

Michigan State University

Cristilyn N. Watkins

Harvard-Smithsonian Center for Astrophysics

R. A. Wittenmyer

University of Southern Queensland

George Zhou

University of Southern Queensland

C. Ziegler

Stephen F. Austin State University

Allyson Bieryla

Harvard-Smithsonian Center for Astrophysics

P. Boyd

NASA Goddard Space Flight Center

Catherine A. Clark

National Aeronautics and Space Administration (NASA)

California Institute of Technology (Caltech)

Courtney D. Dressing

University of California

J. D. Eastman

Harvard-Smithsonian Center for Astrophysics

Jan Eberhardt

Max-Planck-Gesellschaft

M. Endl

College of Natural Sciences

Néstor Espinoza

Space Telescope Science Institute (STScI)

Michael Fausnaugh

Texas Tech University at Lubbock

Massachusetts Institute of Technology (MIT)

N. Guerrero

Massachusetts Institute of Technology (MIT)

College of Liberal Arts and Sciences

T. Henning

Max-Planck-Gesellschaft

K.M. Hesse

Massachusetts Institute of Technology (MIT)

Melissa J. Hobson

Université de Genève

S.B. Howell

NASA Ames Research Center

Andrés Jordán

Universidad Adolfo Ibanez

Instituto Milenio de Astrofísica

D. W. Latham

Harvard-Smithsonian Center for Astrophysics

M. B. Lund

National Aeronautics and Space Administration (NASA)

Ismael Mireles

University of New Mexico

Norio Narita

Astrobiology Center, Japan

University of Tokyo

Instituto de Astrofísica de Canarias

M. Tala-Pinto

Universidad Adolfo Ibanez

Instituto Milenio de Astrofísica

Teznie Pugh

College of Natural Sciences

Samuel N. Quinn

Harvard-Smithsonian Center for Astrophysics

George R. Ricker

Massachusetts Institute of Technology (MIT)

D. R. Rodriguez

Space Telescope Science Institute (STScI)

Felipe I. Rojas

Pontificia Universidad Catolica de Chile

Instituto Milenio de Astrofísica

Mark E. Rose

NASA Ames Research Center

Alexander Rudat

Massachusetts Institute of Technology (MIT)

Paula Sarkis

Max-Planck-Gesellschaft

A. B. Savel

College of Computer, Mathematical, & Natural Sciences

M. Schlecker

University of Arizona

R. Schwarz

Harvard-Smithsonian Center for Astrophysics

S. Seager

Massachusetts Institute of Technology (MIT)

Avi Shporer

Massachusetts Institute of Technology (MIT)

Jeffrey C. Smith

SETI Institute

Keivan G. Stassun

Vanderbilt University

C. Stockdale

Hazelwood Observatory

T. Trifonov

Sofijski universitet

Landessternwarte Heidelberg-Königstuhl

Max-Planck-Gesellschaft

Roland K. Vanderspek

Massachusetts Institute of Technology (MIT)

J. N. Winn

Princeton University

Duncan J Wright

University of Southern Queensland

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 690 A18

Exoplaneter från rymden - CHEOPS och PLATO, ESA's nästa två rymdteleskop (fas 2)

Rymdstyrelsen (65/19), 2020-01-01 -- 2022-12-31.

Rymdstyrelsen (177/19), 2020-01-01 -- 2022-12-31.

Ämneskategorier

Astronomi, astrofysik och kosmologi

Fusion, plasma och rymdfysik

DOI

10.1051/0004-6361/202451313

Mer information

Senast uppdaterat

2024-10-25