TOI-1842b: A Transiting Warm Saturn Undergoing Reinflation around an Evolving Subgiant
Article
Article Title | TOI-1842b: A Transiting Warm Saturn Undergoing Reinflation around an Evolving Subgiant |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Wittenmyer, Robert A. (Author), Clark, Jake T. (Author), Trifonov, Trifon (Author), Addison, Brett C. (Author), Wright, Duncan J. (Author), Stassun, Keivan G. (Author), Horner, Jonathan (Author), Lowson, Nataliea (Author), Kielkopf, John (Author), Kane, Stephen R. (Author), Plavchan, Peter (Author), Shporer, Avi (Author), Zhang, Hui (Author), Bowler, Brendan P. (Author), Mengel, Matthew W. (Author), Okumura, Jack (Author), Rabus, Markus (Author), Johnson, Marshall C. (Author), Harbeck, Daniel (Author), Tronsgaard, Rene (Author), Buchhave, Lars A. (Author), Collins, Karen A. (Author), Collins, Kevin I. (Author), Gan, Tianjun (Author), Jensen, Eric L. N. (Author), Howell, Steve B. (Author), Furlan, E. (Author), Gnilka, Crystal L. (Author), Lester, Kathryn V. (Author), Matson, Rachel A. (Author), Scott, Nicholas J. (Author), Ricker, George R. (Author), Vanderspek, Roland (Author), Latham, David W. (Author), Seager, S. (Author), Winn, Joshua N. (Author), Jenkins, Jon M. (Author), Rudat, Alexander (Author), Quintana, Elisa V. (Author), Rodriguez, David R. (Author), Caldwell, Douglas A. (Author), Quinn, Samuel N. (Author), Essack, Zahra (Author) and Bouma, Luke G. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 163 (2), pp. 1-15 |
Article Number | 82 |
Number of Pages | 15 |
Year | 2022 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/ac3f39 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/ac3f39 |
Abstract | The imminent launch of space telescopes designed to probe the atmospheres of exoplanets has prompted new efforts to prioritize the thousands of transiting planet candidates for follow-up characterization. We report the detection and confirmation of TOI-1842b, a warm Saturn identified by TESS and confirmed with ground-based observations from Minerva-Australis, NRES, and the Las Cumbres Observatory Global Telescope. This planet has a radius of R J, a mass of M J, an orbital period of days, and an extremely low density (? = 0.252 0.091 g cm-3). TOI-1842b has among the best known combinations of large atmospheric scale height (893 km) and host-star brightness (J = 8.747 mag), making it an attractive target for atmospheric characterization. As the host star is beginning to evolve off the main sequence, TOI-1842b presents an excellent opportunity to test models of gas giant reinflation. The primary transit duration of only 4.3 hr also makes TOI-1842b an easily-schedulable target for further ground-based atmospheric characterization. |
Keywords | Exoplanet detection methods (489); Transit photometry (1709); Radial velocity (1332); Extrasolar gaseous giant planets (509); Astrophysics - Earth and Planetary Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Centre for Astrophysics |
Max Planck Society, Germany | |
Vanderbilt University, United States | |
University of Louisville, United States | |
University of California, United States | |
George Mason University, United States | |
Massachusetts Institute of Technology, United States | |
Nanjing University, China | |
University of Texas at Austin, United States | |
Catholic University of the Most Holy Conception (UCSC), Chile | |
Las Cumbres Observatory, United States | |
Technical University of Denmark, Denmark | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Tsinghua University, China | |
Swarthmore College, United States | |
National Aeronautics and Space Administration (NASA), United States | |
United States Naval Observatory, United States | |
NASA Ames Research Center, United States | |
Princeton University, United States | |
Space Telescope Science Institute, United States |
https://research.usq.edu.au/item/q77v9/toi-1842b-a-transiting-warm-saturn-undergoing-reinflation-around-an-evolving-subgiant
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