TESS Delivers Its First Earth-sized Planet and a Warm Sub-Neptune
Article
Article Title | TESS Delivers Its First Earth-sized Planet and a Warm Sub-Neptune |
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ERA Journal ID | 45091 |
Article Category | Article |
Authors | Dragomir, Diana (Author), Teske, Johanna (Author), Gunther, Maximilian N. (Author), Segransan, Damien (Author), Burt, Jennifer A. (Author), Huang, Chelsea X. (Author), Vanderburg, Andrew (Author), Matthews, Elisabeth (Author), Dumusque, Xavier (Author), Stassun, Keivan G. (Author), Pepper, Joshua (Author), Ricker, George R. (Author), Vanderspek, Roland (Author), Latham, David W. (Author), Seager, Sara (Author), Winn, Joshua N. (Author), Jenkins, Jon M. (Author), Beatty, Thomas (Author), Bouchy, Francois (Author), Brown, Timothy M. (Author), Butler, R. Paul (Author), Ciardi, David R. (Author), Crane, Jeffrey D. (Author), Eastman, Jason D. (Author), Fossati, Luca (Author), Francis, Jim (Author), Fulton, Benjamin J. (Author), Gaudi, B. Scott (Author), Goeke, Robert F. (Author), James, David (Author), Klaus, Todd C. (Author), Kuhn, Rudolf B. (Author), Lovis, Christophe (Author), Lund, Michael B. (Author), McDermott, Scott (Author), Paegert, Martin (Author), Pepe, Francesco (Author), Rodriguez, Joseph E. (Author), Sha, Lizhou (Author), Shectman, Stephen A. (Author), Shporer, Avi (Author), Siverd, Robert J. (Author), Soto, Aylin Garcia (Author), Stevens, Daniel J. (Author), Twicken, Joseph D. (Author), Udry, Stephane (Author), Villanueva, Steven, Jr. (Author), Wang, Sharon X. (Author), Wohler, Bill (Author), Yao, Xinyu (Author) and Zhan, Zhuchang (Author) |
Journal Title | The Astrophysical Journal Letters |
Journal Citation | 875 (2), pp. 1-10 |
Article Number | L7 |
Number of Pages | 10 |
Year | 2019 |
Publisher | IOP Publishing |
Place of Publication | United Kingdom |
ISSN | 2041-8205 |
2041-8213 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/2041-8213/ab12ed |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/2041-8213/ab12ed |
Abstract | The future of exoplanet science is bright, as Transiting Exoplanet Survey Satellite (TESS) once again demonstrates with the discovery of its longest-period confirmed planet to date. We hereby present HD 21749b (TOI 186.01), a sub-Neptune in a 36 day orbit around a bright (V = 8.1) nearby (16 pc) K4.5 dwarf. TESS measures HD 21749b to be R ⊕, and combined archival and follow-up precision radial velocity data put the mass of the planet at M ⊕. HD 21749b contributes to the TESS Level 1 Science Requirement of providing 50 transiting planets smaller than 4 R ⊕ with measured masses. Furthermore, we report the discovery of HD 21749c (TOI 186.02), the first Earth-sized () planet from TESS. The HD 21749 system is a prime target for comparative studies of planetary composition and architecture in multi-planet systems. |
Keywords | planetary systems; planets and satellites: detection; stars: individual (HD 21749, TIC 279741379); 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 | Massachusetts Institute of Technology, United States |
Carnegie Institution of Washington, United States | |
University of Geneva, Switzerland | |
University of Texas at Austin, United States | |
Vanderbilt University, United States | |
Lehigh University, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Princeton University, United States | |
National Aeronautics and Space Administration (NASA), United States | |
Pennsylvania State University, United States | |
Las Cumbres Observatory, United States | |
California Institute of Technology (Caltech), United States | |
Austrian Academy of Sciences, Austria | |
Ohio State University, United States | |
Stinger Ghaffarian Technologies, United States | |
South African Astronomical Observatory, South Africa | |
Proto-Logic Consulting, United States | |
NASA Ames Research Center, United States |
https://research.usq.edu.au/item/q725z/tess-delivers-its-first-earth-sized-planet-and-a-warm-sub-neptune
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