TESS Hunt for Young and Maturing Exoplanets (THYME). IV. Three Small Planets Orbiting a 120 Myr Old Star in the Pisces–Eridanus Stream
Article
Article Title | TESS Hunt for Young and Maturing Exoplanets (THYME). IV. Three Small Planets Orbiting a 120 Myr Old Star in the Pisces–Eridanus Stream |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Newton, Elisabeth R. (Author), Mann, Andrew W. (Author), Kraus, Adam L. (Author), Livingston, John H. (Author), Vanderburg, Andrew (Author), Curtis, Jason L. (Author), Thao, Pa Chia (Author), Hawkins, Keith (Author), Wood, Mackenna L. (Author), Rizzuto, Aaron C. (Author), Soubkiou, Abderahmane (Author), Tofflemire, Benjamin M. (Author), Zhou, George (Author), Crossfield, Ian J. M. (Author), Pearce, Logan A. (Author), Collins, Karen A. (Author), Conti, Dennis M. (Author), Tan, Thiam-Guan (Author), Villeneuva, Steven (Author), Spencer, Alton (Author), Dragomir, Diana (Author), Quinn, Samuel N. (Author), Jensen, Eric L. N. (Author), Collins, Kevin I. (Author), Stockdale, Chris (Author), Cloutier, Ryan (Author), Hellier, Coel (Author), Benkhaldoun, Zouhair (Author), Ziegler, Carl (Author), Briceno, Cesar (Author), Law, Nicholas (Author), Benneke, Bjorn (Author), Christiansen, Jessie L. (Author), Gorjian, Varoujan (Author), Kane, Stephen R. (Author), Kreidberg, Laura (Author), Morales, Farisa Y. (Author), Werner, Michael W. (Author), Twicken, Joseph D. (Author), Levine, Alan M. (Author), Ciardi, David R. (Author), Guerrero, Natalia M. (Author), Hesse, Katharine (Author), Quintana, Elisa V. (Author), Shiao, Bernie (Author), Smith, Jeffrey C. (Author), Torres, Guillermo (Author), Ricker, George R. (Author), Vanderspek, Roland (Author), Seager, Sara (Author), Winn, Joshua N. (Author), Jenkins, Jon M. (Author) and Latham, David W. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 161 (2), pp. 1-20 |
Article Number | 65 |
Number of Pages | 20 |
Year | 2021 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/abccc6 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/abccc6 |
Abstract | Young exoplanets can offer insight into the evolution of planetary atmospheres, compositions, and architectures. We present the discovery of the young planetary system TOI 451 (TIC 257605131, Gaia DR2 4844691297067063424). TOI 451 is a member of the 120 Myr old Pisces-Eridanus stream (Psc-Eri). We confirm membership in the stream with its kinematics, its lithium abundance, and the rotation and UV excesses of both TOI 451 and its wide-binary companion, TOI 451 B (itself likely anM-dwarf binary).We identified three candidate planets transiting in the Transiting Exoplanet Survey Satellite data and followed up the signals with photometry from Spitzer and ground-based telescopes. The system comprises three validated planets at periods of 1.9, 9.2, and 16 days, with radii of 1.9, 3.1, and 4.1 R⊗, respectively. The host star is near-solar mass with V=11.0 and H = 9.3 and displays an infrared excess indicative of a debris disk. The planets offer excellent prospects for transmission spectroscopy with the Hubble Space Telescope and the James Webb Space Telescope, providing the opportunity to study planetary atmospheres that may still be in the process of evolving. |
Keywords | Exoplanet astronomy; Exoplanet evolution; Exoplanet systems; Young; star clusters; Stellar activity; Astrophysics - Earth and Planetary Astrophysics; Astrophysics - Solar and Stellar Astrophysics |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | For access to this article, please click on the URL link provided. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Dartmouth College, United States |
University of North Carolina, United States | |
University of Texas at Austin, United States | |
University of Tokyo, Japan | |
American Museum of Natural History, United States | |
Cadi Ayyad University, Morocco | |
Center for Astrophysics Harvard and Smithsonian, United States | |
University of Kansas, United States | |
University of Arizona, United States | |
American Association of Variable Star Observers, United States | |
Perth Exoplanet Survey Telescope Observatory, Australia | |
Massachusetts Institute of Technology, United States | |
Western Connecticut State University, United States | |
University of New Mexico, United States | |
Swarthmore College, United States | |
George Mason University, United States | |
Hazelwood Observatory, Australia | |
Keele University, United Kingdom | |
University of Toronto, Canada | |
Cerro Tololo Inter-American Observatory, Chile | |
University of Montreal, Canada | |
National Aeronautics and Space Administration (NASA), United States | |
California Institute of Technology (Caltech), United States | |
University of California, United States | |
Max Planck Society, Germany | |
NASA Ames Research Center, United States | |
NASA Goddard Space Flight Center, United States | |
Mikulski Archive for Space Telescopes, United States | |
Harvard-Smithsonian Centre for Astrophysics, United States | |
Princeton University, United States |
https://research.usq.edu.au/item/q6x57/tess-hunt-for-young-and-maturing-exoplanets-thyme-iv-three-small-planets-orbiting-a-120-myr-old-star-in-the-pisces-eridanus-stream
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