[en] 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.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Giacalone, Steven; Department of Astronomy, University of California, Berkeley, Berkeley, CA 94720-3411, USA
Dressing, Courtney D.; Department of Astronomy, University of California, Berkeley, Berkeley, CA 94720-3411, USA
Jensen, Eric L. N.; Dept. of Physics & Astronomy, Swarthmore College, Swarthmore, PA 19081, USA
Collins, Karen A.; Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
Ricker, George R.; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Vanderspek, Roland; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Seager, S.; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA ; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA ; Department of Aeronautics and Astronautics, MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
Winn, Joshua N.; Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA
Jenkins, Jon M.; NASA Ames Research Center, Moffett Field, CA 94035, USA
Barclay, Thomas; NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, USA ; University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, USA
Barkaoui, Khalid ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic
Cadieux, Charles; Institute for Research on Exoplanets (IREx), Université de Montréal, Département de Physique, C.P. 6128 Succ. Centre-ville, Montréal, QC H3C 3J7, Canada
Charbonneau, David; Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
Collins, Kevin I.; George Mason University, 4400 University Drive, Fairfax, VA 22030 USA
Conti, Dennis M.; American Association of Variable Star Observers, 49 Bay State Road, Cambridge, MA 02138, USA
Doyon, René; Institute for Research on Exoplanets (IREx), Université de Montréal, Département de Physique, C.P. 6128 Succ. Centre-ville, Montréal, QC H3C 3J7, Canada
Evans, Phil; El Sauce Observatory, Coquimbo Province, Chile
Ghachoui, Mourad; Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, Cadi Ayyad University, Marrakech, Morocco
Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic
Guerrero, Natalia M.; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Hart, Rhodes; Centre for Astrophysics, University of Southern Queensland, Toowoomba, QLD, 4350, Australia
Jehin, Emmanuel ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Kielkopf, John F.; Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, USA
McLean, Brian; Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
Murgas, Felipe; Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Tenerife, Spain ; Departamento de Astrofísica, Universidad de La Laguna (ULL), E-38206 La Laguna, Tenerife, Spain
Palle, Enric; Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain ; Departamento de Astrofísica, Universidad de La Laguna (ULL), E-38206, La Laguna, Tenerife, Spain
Parviainen, Hannu; Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain ; Departamento de Astrofísica, Universidad de La Laguna (ULL), E-38206, La Laguna, Tenerife, Spain
Pozuelos, Francisco J. ; Astrobiology Research Unit, Université de Liège, 19C Allèe du 6 Août, B-4000 Liège, Belgium ; Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, 19C Allée du 6 Août, B-4000 Liège, Belgium
Relles, Howard M.; Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
Shporer, Avi; Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Socia, Quentin; Earths in Other Solar Systems Team. ; Department of Astronomy/Steward Observatory, The University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721, USA
Stockdale, Chris; Hazelwood Observatory, Australia
Tan, Thiam-Guan; Perth Exoplanet Survey Telescope, Perth, Western Australia
Torres, Guillermo; Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
Twicken, Joseph D.; NASA Ames Research Center, Moffett Field, CA 94035, USA ; SETI Institute, Mountain View, CA 94043, USA
Waalkes, William C.; Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309, USA
Waite, Ian A.; Centre for Astrophysics, University of Southern Queensland, Toowoomba, QLD, 4350, Australia)
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