Angelica Psaridi
Three Saturn-mass planets transiting F-type stars revealed with TESS and HARPS: TOI-615b, TOI-622b, and TOI-2641b
Psaridi, Angelica; Bouchy, François; Lendl, Monika; Akinsanmi, Babatunde; Stassun, Keivan G.; Smalley, Barry; Armstrong, David J.; Howard, Saburo; Ulmer-Moll, Solène; Grieves, Nolan; Barkaoui, Khalid; Rodriguez, Joseph E.; Bryant, Edward M.; Suárez, Olga; Guillot, Tristan; Evans, Phil; Attia, Omar; Wittenmyer, Robert A.; Yee, Samuel W.; Collins, Karen A.; Zhou, George; Galland, Franck; Parc, Léna; Udry, Stéphane; Figueira, Pedro; Ziegler, Carl; Mordasini, Christoph; Winn, Joshua N.; Seager, Sara; Jenkins, Jon M.; Twicken, Joseph D.; Brahm, Rafael; Jones, Matías I.; Abe, Lyu; Addison, Brett; Briceño, César; Briegal, Joshua T.; Collins, Kevin I.; Daylan, Tansu; Eigmüller, Phillip; Furesz, Gabor; Guerrero, Natalia M.; Hagelberg, Janis; Heitzmann, Alexis; Hounsell, Rebekah; Huang, Chelsea X.; Krenn, Andreas; Law, Nicholas M.; Mann, Andrew W.; McCormac, James; Mékarnia, Djamel; Mounzer, Dany; Nielsen, Louise D.; Osborn, Ares; Reinarz, Yared; Sefako, Ramotholo R.; Steiner, Michal; Strøm, Pau...
Authors
François Bouchy
Monika Lendl
Babatunde Akinsanmi
Keivan G. Stassun
Barry Smalley b.smalley@keele.ac.uk
David J. Armstrong
Saburo Howard
Solène Ulmer-Moll
Nolan Grieves
Khalid Barkaoui
Joseph E. Rodriguez
Edward M. Bryant
Olga Suárez
Tristan Guillot
Phil Evans
Omar Attia
Robert A. Wittenmyer
Samuel W. Yee
Karen A. Collins
George Zhou
Franck Galland
Léna Parc
Stéphane Udry
Pedro Figueira
Carl Ziegler
Christoph Mordasini
Joshua N. Winn
Sara Seager
Jon M. Jenkins
Joseph D. Twicken
Rafael Brahm
Matías I. Jones
Lyu Abe
Brett Addison
César Briceño
Joshua T. Briegal
Kevin I. Collins
Tansu Daylan
Phillip Eigmüller
Gabor Furesz
Natalia M. Guerrero
Janis Hagelberg
Alexis Heitzmann
Rebekah Hounsell
Chelsea X. Huang
Andreas Krenn
Nicholas M. Law
Andrew W. Mann
James McCormac
Djamel Mékarnia
Dany Mounzer
Louise D. Nielsen
Ares Osborn
Yared Reinarz
Ramotholo R. Sefako
Michal Steiner
Paul A. Strøm
Amaury H. M. J. Triaud
Roland Vanderspek
Leonardo Vanzi
Jose I. Vines
Christopher A. Watson
Duncan J. Wright
Abner Zapata
Abstract
While the sample of confirmed exoplanets continues to grow, the population of transiting exoplanets around early-type stars is still limited. These planets allow us to investigate the planet properties and formation pathways over a wide range of stellar masses and study the impact of high irradiation on hot Jupiters orbiting such stars. We report the discovery of TOI-615b, TOI-622b, and TOI-2641b, three Saturn-mass planets transiting main sequence, F-type stars. The planets were identified by the Transiting Exoplanet Survey Satellite (TESS) and confirmed with complementary ground-based and radial velocity observations. TOI-615b is a highly irradiated (similar to 1277 F-circle dot) and bloated Saturn-mass planet (1.69(-0.06)(+0.05) R-Jup and 0.43(-0.08)(+0.09) M-Jup) in a 4.66 day orbit transiting a 6850 K star. TOI-622b has a radius of 0.82(-0.03)(+0.03) R-Jup and a mass of 0.30(-0.08)(+0.07) M-Jup in a 6.40 day orbit. Despite its high insolation flux (similar to 600 F-circle dot), TOI-622b does not show any evidence of radius inflation. TOI-2641b is a 0.39(-0.04)(+0.02) M-Jup planet in a 4.88 day orbit with a grazing transit (b = 1.04(-0.06)(+0.05)) that results in a poorly constrained radius of 1.61(-0.64)(+0.46) R-Jup. Additionally, TOI-615b is considered attractive for atmospheric studies via transmission spectroscopy with ground-based spectrographs and JWST. Future atmospheric and spin-orbit alignment observations are essential since they can provide information on the atmospheric composition, formation, and migration of exoplanets across various stellar types.
Citation
Psaridi, A., Bouchy, F., Lendl, M., Akinsanmi, B., Stassun, K. G., Smalley, B., …Zapata, A. (2023). Three Saturn-mass planets transiting F-type stars revealed with TESS and HARPS: TOI-615b, TOI-622b, and TOI-2641b. Astronomy & Astrophysics, 675, A39. https://doi.org/10.1051/0004-6361/202346406
Journal Article Type | Article |
---|---|
Acceptance Date | May 2, 2023 |
Online Publication Date | Jun 30, 2023 |
Publication Date | 2023-07 |
Deposit Date | Nov 1, 2023 |
Publicly Available Date | Nov 2, 2023 |
Journal | Astronomy & Astrophysics |
Print ISSN | 0004-6361 |
Electronic ISSN | 1432-0746 |
Publisher | EDP Sciences |
Peer Reviewed | Peer Reviewed |
Volume | 675 |
Pages | A39 |
DOI | https://doi.org/10.1051/0004-6361/202346406 |
Keywords | Space and Planetary Science; Astronomy and Astrophysics; planets and satellites: individual: TOI-615b / planets and satellites: individual: TOI-622b / stars: early-type / techniques: photometric / techniques: radial velocities / planets and satellites: in |
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Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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