Three Saturn-mass planets transiting F-type stars revealed with TESS and HARPS: TOI-615b, TOI-622b, and TOI-2641b

Angelica Psaridi, François Bouchy, Monika Lendl, Babatunde Akinsanmi, Keivan G. Stassun, Barry Smalley, 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. CollinsGeorge 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

Research output: Contribution to journalArticlepeer-review


The number of confirmed exoplanets is increasing, yet there are few known transiting exoplanets around early-type stars. These exoplanets are vital for understanding planet properties and formation across different stellar masses, as well as the effects of high irradiation on hot Jupiters. We announce the discovery of three Saturn-mass planets (TOI-615b, TOI-622b, and TOI-2641b) transiting main sequence, F-type stars, identified by TESS and verified with ground-based observations. TOI-615b orbits a 6850 K star and is highly irradiated, TOI-622b does not exhibit radius inflation despite its high irradiation, and TOI-2641b has a grazing transit leading to an uncertain radius measurement. Particularly, TOI-615b is promising for atmospheric studies. Exploring the atmosphere and alignment of these exoplanets in the future will offer insights into their composition, formation, and migration across different stellar types.
Original languageEnglish
Article numberA39
JournalAstronomy and Astrophysics
StatePublished - Jul 1 2023

ASJC Scopus Subject Areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Planets and satellites: individual: TOI-2641b
  • Planets and satellites: individual: TOI-615b
  • Planets and satellites: individual: TOI-622b
  • Stars: early-type
  • Techniques: photometric
  • Techniques: radial velocities

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