TESS Discovery of a Super-Earth and Three Sub-Neptunes Hosted by the Bright, Sunlike Star HD 108236
Article
Article Title | TESS Discovery of a Super-Earth and Three Sub-Neptunes Hosted by the Bright, Sunlike Star HD 108236 |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Daylan, Tansu (Author), Pingle, Kartik (Author), Wright, Jasmine (Author), Gunther, Maximilian N. (Author), Stassun, Keivan G. (Author), Kane, Stephen R. (Author), Vanderburg, Andrew (Author), Jontof-Hutter, Daniel (Author), Rodriguez, Joseph E. (Author), Shporer, Avi (Author), Huang, Chelsea X. (Author), Mikal-Evans, Thomas (Author), Badenas-Agusti, Mariona (Author), Collins, Karen A. (Author), Rackham, Benjamin V. (Author), Quinn, Samuel N. (Author), Cloutier, Ryan (Author), Collins, Kevin I. (Author), Guerra, Pere (Author), Jensen, Eric L. N. (Author), Kielkopf, John F. (Author), Massey, Bob (Author), Schwarz, Richard P. (Author), Charbonneau, David (Author), Lissauer, Jack J. (Author), Irwin, Jonathan M. (Author), Basturk, Ozgur (Author), Fulton, Benjamin (Author), Soubkiou, Abderahmane (Author), Zouhair, Benkhaldoun (Author), Howell, Steve B. (Author), Ziegler, Carl (Author), Briceno, Cesar (Author), Law, Nicholas (Author), Mann, Andrew W. (Author), Scott, Nic (Author), Furlan, Elise (Author), Ciardi, David R. (Author), Matson, Rachel (Author), Hellier, Coel (Author), Anderson, David R. (Author), Butler, R. Paul (Author), Crane, Jeffrey D. (Author), Teske, Johanna K. (Author), Shectman, Stephen A. (Author), Kristiansen, Martti H. (Author), Terentev, Ivan A. (Author), Schwengeler, Hans Martin (Author), Ricker, George R. (Author), Vanderspek, Roland (Author), Seager, Sara (Author), Winn, Joshua N. (Author), Jenkins, Jon M. (Author), Berta-Thompson, Zachory K. (Author), Bouma, Luke G. (Author), Fong, William (Author), Furesz, Gabor (Author), Henze, Christopher E. (Author), Morgan, Edward H. (Author), Quintana, Elisa (Author), Ting, Eric B. (Author) and Twicken, Joseph D. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 161 (2), pp. 1-21 |
Article Number | 85 |
Number of Pages | 21 |
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/abd73e |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/abd73e |
Abstract | We report the discovery and validation of four extrasolar planets hosted by the nearby, bright, Sun-like (G3V) star HD 108236 using data from the Transiting Exoplanet Survey Satellite (TESS). We present transit photometry, reconnaissance, and precise Doppler spectroscopy, as well as high-resolution imaging, to validate the planetary nature of the objects transiting HD 108236, also known as the TESS Object of Interest (TOI) 1233. The innermost planet is a possibly rocky super-Earth with a period of 3.79523+0.00047-0.00044 days and has a radius of 1.586 ± 0.098 R⊗.The outer planets are sub-Neptunes, with potential gaseous envelopes, having radii of 2.068+0.10-0.091 R⊗, 2.72 ± 0.11 R⊗, and 3.12+0.13-0.12 R⊗ and periods of 6.20370+0.00064-0.00052 days, 14.17555+0.00099-0.0011 days, and 19.5917+0.0022-0.0020 days, respectively. With V and Ks magnitudes of 9.2 and 7.6, respectively, the bright host star makes the transiting planets favorable targets for mass measurements and, potentially, for atmospheric characterization via transmission spectroscopy. HD 108236 is the brightest Sun-like star in the visual (V ) band known to host four or more transiting exoplanets. The discovered planets span a broad range of planetary radii and equilibrium temperatures and share a common history of insolation from a Sun-like star (R∗ = 0.888 ± 0.017 R⊙, Teff = 5730 ± 50 K), making HD 108236 an exciting, opportune cosmic laboratory for testing models of planet formation and evolution. |
Keywords | Exoplanet astronomy (486); Exoplanet detection methods (489); Exoplanet atmospheres (487); Exoplanet dynamics (490); Astrophysics - Earth and Planetary 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 | Massachusetts Institute of Technology, United States |
Cambridge Rindge and Latin School, United States | |
Bedford High School, United States | |
Vanderbilt University, United States | |
University of California, United States | |
University of Texas at Austin, United States | |
University of the Pacific, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
George Mason University, United States | |
Albanya Observatory, Spain | |
Swarthmore College, United States | |
School of Mathematics, Physics and Computing | |
Villa ‘39 Observatory, United States | |
Patashnick Voorheesville Observatory, United States | |
Harvard-Smithsonian Centre for Astrophysics, United States | |
NASA Ames Research Center, United States | |
Ankara University, Turkiye | |
National Aeronautics and Space Administration (NASA), United States | |
Cadi Ayyad University, Morocco | |
University of Toronto, Canada | |
Cerro Tololo Inter-American Observatory, Chile | |
University of North Carolina, United States | |
United States Naval Observatory, United States | |
Keele University, United Kingdom | |
Carnegie Institution of Washington, United States | |
Technical University of Denmark, Denmark | |
No affiliation | |
Princeton University, United States | |
University of Colorado Boulder, United States | |
NASA Goddard Space Flight Center, United States |
https://research.usq.edu.au/item/q7263/tess-discovery-of-a-super-earth-and-three-sub-neptunes-hosted-by-the-bright-sunlike-star-hd-108236
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