TESS giants transiting giants v - Two hot Jupiters orbiting red giant hosts
Article
Pereira, Filipe, Grunblatt, Samuel K., Psaridi, Angelica, Campante, Tiago L., Cunha, Margarida S., Santos, Nuno C., Bossini, Diego, Thorngren, Daniel, Hellier, Coel, Bouchy, Francois, Lendl, Monika, Mounzer, Dany, Udry, Stephane, Beard, Corey, Brinkman, Casey L., Isaacson, Howard, Quinn, Samuel N., Tyler, Dakotah, Zhou, George, ..., Huber, Daniel. 2024. "TESS giants transiting giants v - Two hot Jupiters orbiting red giant hosts." Monthly Notices of the Royal Astronomical Society. 527 (3). https://doi.org/10.1093/mnras/stad3449
Article Title | TESS giants transiting giants v - Two hot Jupiters orbiting red giant hosts |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Pereira, Filipe, Grunblatt, Samuel K., Psaridi, Angelica, Campante, Tiago L., Cunha, Margarida S., Santos, Nuno C., Bossini, Diego, Thorngren, Daniel, Hellier, Coel, Bouchy, Francois, Lendl, Monika, Mounzer, Dany, Udry, Stephane, Beard, Corey, Brinkman, Casey L., Isaacson, Howard, Quinn, Samuel N., Tyler, Dakotah, Zhou, George, Howell, Steve B., Howard, Andrew W. H, Jenkins, Jon M., Seager, Sara, Vanderspek, Roland K., Winn, Joshua N., Saunders, Nicholas and Huber, Daniel |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 527 (3) |
Number of Pages | 14 |
Year | 2024 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stad3449 |
Web Address (URL) | https://academic.oup.com/mnras/article/527/3/6332/7382226 |
Abstract | In this work, we present the discovery and confirmation of two hot Jupiters orbiting red giant stars, TOI-4377 b and TOI-4551 b, observed by Transiting Exoplanet Survey Satellite in the Southern ecliptic hemisphere and later followed-up with radial-velocity (RV) observations. For TOI-4377 b, we report a mass of and a inflated radius of 1.348 ± 0.081 RJ orbiting an evolved intermediate-mass star (1.36 M and 3.52 R; TIC 394918211) on a period of of 4.378 d. For TOI-4551 b, we report a mass of 1.49 ± 0.13 MJ and a radius that is not obviously inflated of, also orbiting an evolved intermediate-mass star (1.31 M and 3.55 R; TIC 204650483) on a period of 9.956 d. We place both planets in context of known systems with hot Jupiters orbiting evolved hosts, and note that both planets follow the observed trend of the known stellar incident flux-planetary radius relation observed for these short-period giants. Additionally, we produce planetary interior models to estimate the heating efficiency with which stellar incident flux is deposited in the planet's interior, estimating values of and for TOI-4377 b and TOI-4551 b, respectively. These values are in line with the known population of hot Jupiters, including hot Jupiters orbiting main-sequence hosts, which suggests that the radii of our planets have re-inflated in step with their parent star's brightening as they evolved into the post-main sequence. Finally, we evaluate the potential to observe orbital decay in both systems.. |
Keywords | exoplanets; planets and satellites: detection |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510199. Astronomical sciences not elsewhere classified |
Byline Affiliations | University of Porto, Portugal |
American Museum of Natural History, United States | |
Flatiron Institute, United States | |
Johns Hopkins University, United States | |
University of Geneva, Switzerland | |
Keele University, United Kingdom | |
University of California Irvine, United States | |
University of Hawaii, United States | |
University of California Berkeley, United States | |
Centre for Astrophysics | |
Center for Astrophysics Harvard and Smithsonian, United States | |
University of California Los Angeles, United States | |
NASA Ames Research Center, United States | |
California Institute of Technology (Caltech), United States | |
Massachusetts Institute of Technology, United States | |
Princeton University, United States | |
University of Sydney |
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