Vetting of 384 TESS Objects of Interest with TRICERATOPS and Statistical Validation of 12 Planet Candidates
Article
Article Title | Vetting of 384 TESS Objects of Interest with TRICERATOPS and Statistical Validation of 12 Planet Candidates |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Giacalone, Steven (Author), Dressing, Courtney D. (Author), Jensen, Eric L. N. (Author), Collins, Karen A. (Author), Ricker, George R. (Author), Vanderspek, Roland (Author), Seager, S. (Author), Winn, Joshua N. (Author), Jenkins, Jon M. (Author), Barclay, Thomas (Author), Barkaoui, Khalid (Author), Cadieux, Charles (Author), Charbonneau, David (Author), Collins, Kevin I. (Author), Conti, Dennis M. (Author), Doyon, Rene (Author), Evans, Phil (Author), Ghachoui, Mourad (Author), Gillon, Michael (Author), Guerrero, Natalia M. (Author), Hart, Rhodes (Author), Jehin, Emmanuel (Author), Kielkopf, John F. (Author), McLean, Brian (Author), Murgas, Felipe (Author), Palle, Enric (Author), Parviainen, Hannu (Author), Pozuelos, Francisco J. (Author), Relles, Howard M. (Author), Shporer, Avi (Author), Socia, Quentin (Author), Stockdale, Chris (Author), Tan, Thiam-Guan (Author), Torres, Guillermo (Author), Twicken, Joseph D. (Author), Waalkes, William C. (Author) and Waite, Ian A. (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 161 (1), pp. 1-27 |
Article Number | 24 |
Number of Pages | 27 |
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/abc6af |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/abc6af |
Abstract | We present TRICERATOPS, a new Bayesian tool that can be used to vet and validate TESS Objects of Interest (TOIs). We test the tool on 68 TOIs that have been previously confirmed as planets or rejected as astrophysical false positives. By looking in the false-positive probability (FPP)−nearby false-positive probability (NFPP) plane, we define criteria that TOIs must meet to be classified as validated planets (FPP<0.015 and NFPP<10^(−3)), likely planets (FPP<0.5 and NFPP<10^(−3)), and likely nearby false positives (NFPP>10^(−1)). We apply this procedure on 384 unclassified TOIs and statistically validate 12, classify 125 as likely planets, and classify 52 as likely nearby false positives. Of the 12 statistically validated planets, 9 are newly validated. TRICERATOPS is currently the only TESS vetting and validation tool that models transits from nearby contaminant stars in addition to the target star. We therefore encourage use of this tool to prioritize follow-up observations that confirm bona fide planets and identify false positives originating from nearby stars. |
Keywords | Exoplanet astronomy, Astrostatistics, Planet hosting stars, Exoplanets |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
490503. Computational statistics | |
Public Notes | For access to this article, please click on the URL link provided. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | University of California, United States |
Swarthmore College, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Massachusetts Institute of Technology, United States | |
Princeton University, United States | |
NASA Ames Research Center, United States | |
National Aeronautics and Space Administration (NASA), United States | |
Cadi Ayyad University, Morocco | |
University of Montreal, Canada | |
George Mason University, United States | |
American Association of Variable Star Observers, United States | |
El Sauce Observatory, Chile | |
University of Liege, Belgium | |
Centre for Astrophysics | |
University of Louisville, United States | |
Space Telescope Science Institute, United States | |
Institute of Astrophysics of the Canary Islands, Spain | |
University of Arizona, United States | |
Hazelwood Observatory, Australia | |
Perth Exoplanet Survey Telescope Observatory, Australia | |
SETI Institute, United States | |
University of Colorado Boulder, United States |
https://research.usq.edu.au/item/q6334/vetting-of-384-tess-objects-of-interest-with-triceratops-and-statistical-validation-of-12-planet-candidates
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