The Astronomical Journal (Jan 2023)
A High-Eccentricity Warm Jupiter Orbiting TOI-4127
- Arvind F. Gupta,
- Jonathan M. Jackson,
- Guillaume Hébrard,
- Andrea S. J. Lin,
- Keivan G. Stassun,
- Jiayin Dong,
- Steven Villanueva Jr.,
- Diana Dragomir,
- Suvrath Mahadevan,
- Jason T. Wright,
- Jose M. Almenara,
- Cullen H. Blake,
- Isabelle Boisse,
- Pía Cortés-Zuleta,
- Paul A. Dalba,
- Rodrigo F. Díaz,
- Eric B. Ford,
- Thierry Forveille,
- Robert Gagliano,
- Samuel Halverson,
- Neda Heidari,
- Shubham Kanodia,
- Flavien Kiefer,
- David w. Latham,
- Michael W. McElwain,
- Ismael Mireles,
- Claire Moutou,
- Joshua Pepper,
- George R. Ricker,
- Paul Robertson,
- Arpita Roy,
- Martin Schlecker,
- Christian Schwab,
- S. Seager,
- Avi Shporer,
- Guđmundur Stefánsson,
- Ryan C. Terrien,
- Eric B. Ting,
- Joshua N. Winn,
- Allison Youngblood
Affiliations
- Arvind F. Gupta
- ORCiD
- Department of Astronomy & Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA ; [email protected]; Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA
- Jonathan M. Jackson
- ORCiD
- Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA; Astronomy Department and Van Vleck Observatory, Wesleyan University , 96 Foss Hill Drive, Middletown, CT 06459, USA
- Guillaume Hébrard
- Institut d’astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie , 98bis Boulevard Arago, F-75014 Paris, France; Observatoire de Haute-Provence, CNRS, Université d’Aix-Marseille , F-04870 Saint-Michel-l’Observatoire, France
- Andrea S. J. Lin
- ORCiD
- Department of Astronomy & Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA ; [email protected]; Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA
- Keivan G. Stassun
- ORCiD
- Department of Physics and Astronomy, Vanderbilt University , Nashville, TN 37235, USA
- Jiayin Dong
- ORCiD
- Center for Computational Astrophysics, Flatiron Institute , 162 Fifth Avenue, New York, NY 10010, USA
- Steven Villanueva Jr.
- ORCiD
- Exoplanets and Stellar Astrophysics Laboratory, NASA Goddard Space Flight Center , Greenbelt, MD 20771, USA
- Diana Dragomir
- ORCiD
- Department of Physics and Astronomy, The University of New Mexico , Albuquerque, NM 87106, USA
- Suvrath Mahadevan
- ORCiD
- Department of Astronomy & Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA ; [email protected]; Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA; ETH Zurich, Institute for Particle Physics & Astrophysics , Zurich, Switzerland
- Jason T. Wright
- ORCiD
- Department of Astronomy & Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA ; [email protected]; Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA; Penn State Extraterrestrial Intelligence Center, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA
- Jose M. Almenara
- ORCiD
- Université Grenoble Alpes , CNRS, IPAG, 414 Rue de la Piscine, F-38400, St-Martin d’Héres, France
- Cullen H. Blake
- ORCiD
- Department of Physics and Astronomy, University of Pennsylvania , 209 South 33rd Street, Philadelphia, PA 19104, USA
- Isabelle Boisse
- Aix Marseille Université , CNRS, CNES, LAM, Marseille, France
- Pía Cortés-Zuleta
- ORCiD
- Aix Marseille Université , CNRS, CNES, LAM, Marseille, France
- Paul A. Dalba
- ORCiD
- Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95064, USA; SETI Institute , Carl Sagan Center, 339 Bernardo Avenue, Suite 200, Mountain View, CA 94043, USA
- Rodrigo F. Díaz
- ORCiD
- International Center for Advanced Studies (ICAS) and ICIFI (CONICET) , ECyT-UNSAM, Campus Miguelete, 25 de Mayo y Francia, (1650) Buenos Aires, Argentina
- Eric B. Ford
- ORCiD
- Department of Astronomy & Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA ; [email protected]; Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA; Institute for Computational and Data Sciences, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA; Center for Astrostatistics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA
- Thierry Forveille
- ORCiD
- Université Grenoble Alpes , CNRS, IPAG, 414 Rue de la Piscine, F-38400, St-Martin d’Héres, France
- Robert Gagliano
- ORCiD
- Amateur Astronomer , Glendale, AZ 85308, USA
- Samuel Halverson
- ORCiD
- Jet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Drive, Pasadena, CA 91109, USA
- Neda Heidari
- ORCiD
- Aix Marseille Université , CNRS, CNES, LAM, Marseille, France; Department of Physics, Shahid Beheshti University , Tehran, Iran; Laboratoire J.-L. Lagrange, Observatoire de la Côte d’Azur (OCA), Universite de Nice-Sophia Antipolis (UNS) , CNRS, Campus Valrose, F-06108 Nice Cedex 2, France
- Shubham Kanodia
- ORCiD
- Earth and Planets Laboratory, Carnegie Institution for Science , 5241 Broad Branch Road, NW, Washington, DC 20015, USA
- Flavien Kiefer
- ORCiD
- LESIA, Observatoire de Paris, Université PSL , CNRS, Sorbonne Université, Université Paris Cité, 5 place Jules Janssen, F-92195 Meudon, France
- David w. Latham
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
- Michael W. McElwain
- ORCiD
- Exoplanets and Stellar Astrophysics Laboratory, NASA Goddard Space Flight Center , Greenbelt, MD 20771, USA
- Ismael Mireles
- ORCiD
- Department of Physics and Astronomy, The University of New Mexico , Albuquerque, NM 87106, USA
- Claire Moutou
- Université de Toulouse , CNRS, IRAP, 14 avenue Belin, F-31400 Toulouse, France
- Joshua Pepper
- ORCiD
- Department of Physics, Lehigh University , 16 Memorial Drive East, Bethlehem, PA 18015, USA
- George R. Ricker
- ORCiD
- Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA
- Paul Robertson
- ORCiD
- Department of Physics & Astronomy, The University of California , Irvine, Irvine, CA 92697, USA
- Arpita Roy
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Dr, Baltimore, MD 21218, USA; Department of Physics and Astronomy, Johns Hopkins University , 3400 N Charles Street, Baltimore, MD 21218, USA
- Martin Schlecker
- ORCiD
- Steward Observatory and Department of Astronomy, The University of Arizona , Tucson, AZ 85721, USA
- Christian Schwab
- ORCiD
- Department of Physics and Astronomy, Macquarie University , Balaclava Road, North Ryde, NSW 2109, Australia
- S. Seager
- ORCiD
- 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, Massachusetts Institute of Technology , Cambridge, MA 02139, USA
- Avi Shporer
- ORCiD
- Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA
- Guđmundur Stefánsson
- ORCiD
- Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08540, USA
- Ryan C. Terrien
- ORCiD
- Carleton College , One North College Street, Northfield, MN 55057, USA
- Eric B. Ting
- ORCiD
- NASA Ames Research Center , Moffett Field, CA 94035, USA
- Joshua N. Winn
- ORCiD
- Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08540, USA
- Allison Youngblood
- ORCiD
- Exoplanets and Stellar Astrophysics Laboratory, NASA Goddard Space Flight Center , Greenbelt, MD 20771, USA
- DOI
- https://doi.org/10.3847/1538-3881/accb9b
- Journal volume & issue
-
Vol. 165,
no. 6
p. 234
Abstract
We report the discovery of TOI-4127 b, which is a transiting, Jupiter-sized exoplanet on a long-period ( $P={56.39879}_{-0.00010}^{+0.00010}$ days) and a high-eccentricity orbit around a late F-type dwarf star. This warm Jupiter was first detected and identified as a promising candidate from a search for single-transit signals in TESS Sector 20 data, and was later characterized as a planet following two subsequent transits (TESS Sectors 26 and 53) and follow-up ground-based RV observations with the NEID and SOPHIE spectrographs. We jointly fit the transit and RV data to constrain the physical ( ${R}_{p}={1.096}_{-0.032}^{+0.039}{R}_{{\rm{J}}}$ , ${M}_{p}={2.30}_{-0.11}^{+0.11}{M}_{{\rm{J}}}$ ) and orbital parameters of the exoplanet. Given its high orbital eccentricity ( $e={0.7471}_{-0.0086}^{+0.0078}$ ), TOI-4127 b is a compelling candidate for studies of warm Jupiter populations and of hot Jupiter formation pathways. We show that the present periastron separation of TOI-4127 b is too large for high-eccentricity tidal migration to circularize its orbit, and that TOI-4127 b is unlikely to be a hot Jupiter progenitor unless it is undergoing angular momentum exchange with an undetected outer companion. Although we find no evidence for an external companion, the available observational data are insufficient to rule out the presence of a perturber that can excite eccentricity oscillations and facilitate tidal migration.
Keywords
