1. TIC 172900988: A Transiting Circumbinary Planet Detected in One Sector of TESS Data
- Author
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Isabelle Boisse, Greg Olmschenk, Nicholas M. Law, P. Guerra, Jessie L. Christiansen, Michael B. Lund, A. Santerne, Ward S. Howard, Richard P. Schwarz, Roland Vanderspek, Jon M. Jenkins, Steve Majewski, Joshua E. Schlieder, Mitchell Yenawine, Samuel N. Quinn, K. I. Collins, Brian P. Powell, Eric B. Ting, Joshua N. Winn, Avi Shporer, John F. Kielkopf, Ravi Kumar Kopparapu, Robert M. Quimby, Jason F. Rowe, Caleb Ben Christiansen, Ethan Kruse, Eric L. N. Jensen, Michael Fausnaugh, Matthew R. Standing, David Wood, Nader Haghighipour, Phillip J. MacQueen, David R. Ciardi, Guillaume Hébrard, Coel Hellier, Denise C. Stephens, Knicole D. Colón, Robert F. Wilson, David J. James, Pat Boyce, Serge Bergeron, Thomas Barclay, Allyson Bieryla, Guillermo Torres, Jeffrey Herman, Elisa V. Quintana, Tsevi Mazeh, Matthew J. Nelson, Dennis M. Conti, Thomas G. Beatty, Karen A. Collins, William F. Welsh, Douglas A. Caldwell, George R. Ricker, Amaury H. M. J. Triaud, Eric Agol, Joshua Pepper, S. Otero, Keivan G. Stassun, Laurance R. Doyle, Edward Wiley, Scott Dixon, Sara Seager, Daniel J. Stevens, Magali Deleuil, David W. Latham, Robert Buchheim, Eric G. Hintz, Michael Endl, Veselin B. Kostov, Jerome A. Orosz, David P. Martin, Benjamin T. Montet, Bradley S. Walter, Lalitha Sairam, Gábor Fűrész, Richard C. Kidwell, Pierre F. L. Maxted, Joseph E. Rodriguez, Gongjie Li, Joe Ulowetz, Jack J. Lissauer, Michael Richmond, Emily A. Gilbert, Felipe Murgas, Billy Quarles, William D. Cochran, Stephen R. Kane, McDonald Observatory, University of Texas at Austin [Austin], Harvard-Smithsonian Center for Astrophysics (CfA), Harvard University-Smithsonian Institution, Georgia Institute of Technology [Atlanta], Institute for Astronomy [Honolulu], University of Hawai‘i [Mānoa] (UHM), University of Washington [Seattle], NASA Goddard Space Flight Center (GSFC), Universities Space Research Association (USRA), Observatoire Astronomique de l'Université de Genève (ObsGE), Université de Genève = University of Geneva (UNIGE), NASA Ames Research Center Cooperative for Research in Earth Science in Technology (ARC-CREST), NASA Ames Research Center (ARC), Institut d'Astrophysique de Paris (IAP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Center for Space Research [Cambridge] (CSR), Massachusetts Institute of Technology (MIT), Institut de Recherche sur les Exoplanètes (iREX), Université de Montréal (UdeM), Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, Harvard University [Cambridge]-Smithsonian Institution, Institut de Recherche Mathématique de Rennes (IRMAR), Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Rennes (ENS Rennes)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Nutrition, Métabolismes et Cancer (NuMeCan), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université de Genève (UNIGE), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES)
- Subjects
Exoplanet astronomy ,[PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] ,FOS: Physical sciences ,Q1 ,Planet ,Eclipsing binary stars ,Binary star ,QB460 ,Exoplanet detection methods ,QA ,QC ,ComputingMilieux_MISCELLANEOUS ,QB ,Earth and Planetary Astrophysics (astro-ph.EP) ,Physics ,Exoplanets ,Astronomy ,Astronomy and Astrophysics ,Exoplanet ,Space and Planetary Science ,Circumbinary planet ,QB799 ,Astrophysics - Earth and Planetary Astrophysics - Abstract
We report the first discovery of a transiting circumbinary planet detected from a single sector of TESS data. During Sector 21, the planet TIC 172900988b transited the primary star and then 5 days later it transited the secondary star. The binary is itself eclipsing, with a period of P = 19.7 days and an eccentricity of e = 0.45. Archival data from ASAS-SN, Evryscope, KELT, and SuperWASP reveal a prominent apsidal motion of the binary orbit, caused by the dynamical interactions between the binary and the planet. A comprehensive photodynamical analysis of the TESS, archival and follow-up data yields stellar masses and radii of M1 = 1.2384 +/- 0.0007 MSun and R1 = 1.3827 +/- 0.0016 RSun for the primary and M2 = 1.2019 +/- 0.0007 MSun and R2 = 1.3124 +/- 0.0012 RSun for the secondary. The radius of the planet is R3 = 11.25 +/- 0.44 REarth (1.004 +/- 0.039 RJup). The planet's mass and orbital properties are not uniquely determined - there are six solutions with nearly equal likelihood. Specifically, we find that the planet's mass is in the range of 824 < M3 < 981 MEarth (2.65 < M3 < 3.09 MJup), its orbital period could be 188.8, 190.4, 194.0, 199.0, 200.4, or 204.1 days, and the eccentricity is between 0.02 and 0.09. At a V = 10.141 mag, the system is accessible for high-resolution spectroscopic observations, e.g. Rossiter-McLaughlin effect and transit spectroscopy., 57 pages, 30 figures, 25 tables; Accepted AJ
- Published
- 2021
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