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: detection
Planets and satellites: gaseous planets
Författare
Ilaria Carleo
Universidad de la Laguna
Instituto de Astrofísica de Canarias
Istituto nazionale di astrofisica (INAF)
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
University of Texas
H. L.M. Osborne
European Southern Observatory (ESO)
University College London (UCL)
Rafael Brahm
Instituto Milenio de Astrofísica
Universidad Adolfo Ibanez
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
University of Texas
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
National Aeronautics and Space Administration (NASA)
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
University of Texas
Néstor Espinoza
Space Telescope Science Institute (STScI)
Michael Fausnaugh
Texas Tech University
Massachusetts Institute of Technology (MIT)
N. Guerrero
College of Liberal Arts and Sciences
Massachusetts Institute of Technology (MIT)
T. Henning
Max-Planck-Gesellschaft
K.M. Hesse
Massachusetts Institute of Technology (MIT)
Melissa J. Hobson
Université de Genève
S.B. Howell
National Aeronautics and Space Administration (NASA)
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
Instituto de Astrofísica de Canarias
Astrobiology Center, Japan
University of Tokyo
M. Tala-Pinto
Universidad Adolfo Ibanez
Instituto Milenio de Astrofísica
Teznie Pugh
University of Texas
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
National Aeronautics and Space Administration (NASA)
Alexander Rudat
Massachusetts Institute of Technology (MIT)
Paula Sarkis
Max-Planck-Gesellschaft
A. B. Savel
University of Maryland
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
Max-Planck-Gesellschaft
Sofijski universitet
Landessternwarte Heidelberg-Königstuhl
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 A18Jämställdhet för excellens (Genie)
Stiftelsen Chalmers tekniska högskola, 2019-01-01 -- 2028-12-31.
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 (SSIF 2011)
Astronomi, astrofysik och kosmologi
Fusion, plasma och rymdfysik
DOI
10.1051/0004-6361/202451313