Vetting of 384 TESS Objects of Interest with TRICERATOPS and Statistical Validation of 12 Planet Candidates

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dc.contributor.authorGiacalone, Steven
dc.contributor.authorDressing, Courtney D.
dc.contributor.authorJensen, Eric L. N.
dc.contributor.authorCollins, Karen A.
dc.contributor.authorRicker, George R.
dc.contributor.authorVanderspek, Roland
dc.contributor.authorSeager, S.
dc.contributor.authorWinn, Joshua N.
dc.contributor.authorJenkins, Jon M.
dc.contributor.authorBarclay, Thomas
dc.contributor.authorBarkaoui, Khalid
dc.contributor.authorCadieux, Charles
dc.contributor.authorCharbonneau, David
dc.contributor.authorCollins, Kevin I.
dc.contributor.authorConti, Dennis M.
dc.contributor.authorDoyon, René
dc.contributor.authorEvans, Phil
dc.contributor.authorGhachoui, Mourad
dc.contributor.authorGillon, Michaël
dc.contributor.authorGuerrero, Natalia M.
dc.contributor.authorHart, Rhodes
dc.contributor.authorJehin, Emmanuël
dc.contributor.authorKielkopf, John F.
dc.contributor.authorMcLean, Brian
dc.contributor.authorMurgas, Felipe
dc.contributor.authorPalle, Enric
dc.contributor.authorParviainen, Hannu
dc.contributor.authorPozuelos, Francisco J.
dc.contributor.authorRelles, Howard M.
dc.contributor.authorShporer, Avi
dc.contributor.authorSocia, Quentin
dc.contributor.authorStockdale, Chris
dc.contributor.authorTan, Thiam-Guan
dc.contributor.authorTorres, Guillermo
dc.contributor.authorTwicken, Joseph D.
dc.contributor.authorWaalkes, William C.
dc.contributor.authorWaite, Ian A.
dc.date.accessioned2021-01-04T22:25:54Z
dc.date.available2021-01-04T22:25:54Z
dc.date.issued2020-12-11
dc.description.abstractWe 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.en_US
dc.description.sponsorshipWe thank the NASA TESS Guest Investigator Program for supporting this work through grant 80NSSC18K1583 (awarded to C.D.D.). S.G. and C.D.D. also appreciate and acknowledge support from the Hellman Fellows Fund, the Alfred P. Sloan Foundation, the David and Lucile Packard Foundation, and the NASA Exoplanets Research Program (XRP) through grant 80NSSC20K0250. This work makes use of observations from the LCOGT network. This material is based on work supported by the National Science Foundation Graduate Research Fellowship Program under grant No. DGE-1650115. The research leading to these results has received funding from the ARC grant for Concerted Research Actions, financed by the WalloniaBrussels Federation. TRAPPIST is funded by the Belgian Fund for Scientific Research (Fond National de la Recherche Scientifique, FNRS) under the grant FRFC 2.5.594.09.F, with the participation of the Swiss National Science Foundation (SNF). M.G. and E.J. are F.R.S.-FNRS Senior Research Associates. The MEarth Team gratefully acknowledges the David and Lucile Packard Fellowship for Science and Engineering (awarded to D.C.), continued support by the NSF mostly recently under grant AST-1616624, and support by NASA under grant 80NSSC18K0476 (XRP Program). This work is made possible by a grant from the John Templeton Foundation. The opinions expressed in this publication are those of the authors and do not necessarily reflect the views of the John Templeton Foundation. J.N.W. thanks the HeisingSimons Foundation for support. Funding for the TESS mission is provided by NASA’s Science Mission directorate. This research has made use of the Exoplanet Follow-up Observation Program website, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. This paper includes data collected by the TESS mission, which are publicly available from the Mikulski Archive for Space Telescopes (MAST). We acknowledge the use of public TESS Alert data from pipelines at the TESS Science Office and TESS Science Processing Operations Center. Resources supporting this work were provided by the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center for the production of the SPOC data products.en_US
dc.description.urihttps://iopscience.iop.org/article/10.3847/1538-3881/abc6af/metaen_US
dc.format.extent27 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2cefm-6dyl
dc.identifier.citationGiacalone, Steven; Dressing, Courtney D.; Jensen, Eric L. N.; Collins, Karen A.; Ricker, George R.; Vanderspek, Roland; Seager, S.; Winn, Joshua N.; Jenkins, Jon M.; Barclay, Thomas; Barkaoui, Khalid; Cadieux, Charles; Charbonneau, David; Collins, Kevin I.; Conti, Dennis M.; Doyon, René; Evans, Phil; Ghachoui, Mourad; Gillon, Michaël; Guerrero, Natalia M.; Hart, Rhodes; Jehin, Emmanuël; Kielkopf, John F.; McLean, Brian; Murgas, Felipe; Palle, Enric; Parviainen, Hannu; Pozuelos, Francisco J.; Relles, Howard M.; Shporer, Avi; Socia, Quentin; Stockdale, Chris; Tan, Thiam-Guan; Torres, Guillermo; Twicken, Joseph D.; Waalkes, William C.; Waite, Ian A.; Vetting of 384 TESS Objects of Interest with TRICERATOPS and Statistical Validation of 12 Planet Candidates; The Astronomical Journal, Volume 161, Number 1 (2020); https://iopscience.iop.org/article/10.3847/1538-3881/abc6af/metaen_US
dc.identifier.urihttps://doi.org/10.3847/1538-3881/abc6af
dc.identifier.urihttp://hdl.handle.net/11603/20293
dc.language.isoen_USen_US
dc.publisherIOP Publishingen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Physics Department
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsPublic Domain Mark 1.0*
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleVetting of 384 TESS Objects of Interest with TRICERATOPS and Statistical Validation of 12 Planet Candidatesen_US
dc.typeTexten_US

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