Mass determination of two Jupiter-sized planets orbiting slightly evolved stars: TOI-2420 b and TOI-2485 b
Article
Article Title | Mass determination of two Jupiter-sized planets orbiting slightly evolved stars: TOI-2420 b and TOI-2485 b |
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ERA Journal ID | 1050 |
Article Category | Article |
Authors | Carleo, Ilaria, Barragan, Oscar, Persson, Carina M., Fridlund, Malcolm, Lam, Kristine W. F., Messina, Sergio, Gandolfi, Davide, Smith, Alexis M. S., Johnson, Marshall C., Cochran, William, Osborne, Hannah L. M., Brahm, Rafael, Ciardi, David R., Collins, Karen A., Everett, Mark E., Giacalone, Steven, Guenther, Eike W., Hatzes, Artie, Hellier, Coel, Horner, Jonathan, Kabath, Petr, Korth, Judith, MacQueen, Phillip, Masseron, Thomas, Murgas, Felipe, Nowak, Grzegorz, Rodriguez, Joseph E., Watkins, Cristilyn N., Wittenmyer, Rob, Zhou, George, Ziegler, Carl, Bieryla, Allyson, Boyd, Patricia T., Clark, Catherine A., Dressing, Courtney D., Eastman, Jason D., Eberhardt, Jan, Endl, Michael, Espinoza, Nestor, Fausnaugh, Michael, Guerrero, Natalia M., Henning, Thomas, Hesse, Katharine, Hobson, Melissa J., Howell, Steve B., Jordan, Andrés, Latham, David W., Lund, Michael B., Mireles, Ismael, Narita, Norio, Tala Pinto, Marcelo, Pugh, Teznie, Quinn, Samuel N., Ricker, George, Rodriguez, David R., Rojas, Felipe I., Rose, Mark E., Rudat, Alexander, Sarkis, Paula, Savel, Arjun B., Schlecker, Martin, Schwarz, Richard P., Seager, Sara, Shporer, Avi, Smith, Jeffrey C., Stassun, Keivan G., Stockdale, Chris, Trifonov, Trifon, Vanderspek, Roland, Winn, Joshua N. and Wright, Duncan |
Journal Title | Astronomy and Astrophysics: a European journal |
Journal Citation | 690 |
Article Number | A18 |
Number of Pages | 14 |
Year | 2024 |
Publisher | EDP Sciences |
Place of Publication | France |
ISSN | 0004-6361 |
1432-0746 | |
Digital Object Identifier (DOI) | https://doi.org/10.1051/0004-6361/202451313 |
Web Address (URL) | https://www.aanda.org/articles/aa/full_html/2024/10/aa51313-24/aa51313-24.html |
Abstract | 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. |
Keywords | planets and satellites; gaseous; planets and satellites; detection |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510107. Planetary science (excl. solar system and planetary geology) |
Byline Affiliations | INAF - Astrophysical Observatory of Turin, Italy |
Institute of Astrophysics of the Canary Islands, Spain | |
University of La Laguna, Spain | |
University of Oxford, United Kingdom | |
Chalmers University of Technology, Sweden | |
Leiden University, Netherlands | |
German Aerospace Center (DLR), Germany | |
INAF - Catania Astrophysical Observatory, Italy | |
University of Turin, Italy | |
Ohio State University, United States | |
University of Texas at Austin, United States | |
University College London, United Kingdom | |
European Southern Observatory (ESO), Germany | |
Adolfo Ibanez University, Chile | |
Millennium Institute for Astrophysics, Chile | |
NASA Exoplanet Science Institute, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
NSF's National Optical Infrared Astronomy Research Laboratory (NOIRLab), United States | |
California Institute of Technology (Caltech), United States | |
Thuringian State Observatory, Germany | |
Keele University, United Kingdom | |
Centre for Astrophysics | |
Czech Academy of Sciences, Czech Republic | |
Lund University, Sweden | |
Nicolaus Copernicus University, Poland | |
Michigan State University, United States | |
Stephen F. Austin State University, United States | |
NASA Goddard Space Flight Center, United States | |
University of California Berkeley, United States | |
Max Planck Institute for Astronomy, Germany | |
Space Telescope Science Institute, United States | |
Texas Tech University, United States | |
Massachusetts Institute of Technology, United States | |
University of Florida, United States | |
University of Geneva, Switzerland | |
NASA Ames Research Center, United States | |
University of New Mexico, United States | |
University of Tokyo, Japan | |
Astrobiology Center, Japan | |
Pontifical Catholic University of Valparaiso, Chile | |
University of Maryland, United States | |
University of Arizona, United States | |
SETI Institute, United States | |
Vanderbilt University, United States | |
Hazelwood Observatory, Australia | |
Heidelberg University, Germany | |
Sofia University, Bulgaria | |
Princeton University, United States |
https://research.usq.edu.au/item/zq8z6/mass-determination-of-two-jupiter-sized-planets-orbiting-slightly-evolved-stars-toi-2420-b-and-toi-2485-b
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