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A High-Eccentricity Warm Jupiter Orbiting TOI-4127We report the discovery of TOI-4127 b, which is a transiting, Jupiter-sized exoplanet on a long period (P=56.39879 +0.00010-0.00010days) 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 (Rp=1.096+0.039-0.032RJ, Mp=2.30+0.11-0.11MJ) and orbital parameters of the exoplanet. Given its high orbital eccentricity (đť“®=0.7471+0.0078-0.0086), 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.
Document ID
20230010540
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Arvind F. Gupta ORCID
(Pennsylvania State University State College, Pennsylvania, United States)
Jonathan M. Jackson
(Pennsylvania State University State College, Pennsylvania, United States)
Guillaume HĂ©brard
(Institut d'Astrophysique de Paris Paris, France)
Andrea S. J. Lin ORCID
(Pennsylvania State University State College, Pennsylvania, United States)
Keivan G. Stassun ORCID
(Vanderbilt University Nashville, Tennessee, United States)
Jiayin Dong ORCID
(Pennsylvania State University State College, Pennsylvania, United States)
Steven Villanueva Jr. ORCID
(Oak Ridge Associated Universities Oak Ridge, Tennessee, United States)
Diana Dragomir ORCID
(University of New Mexico Albuquerque, New Mexico, United States)
Suvrath Mahadevan ORCID
(Pennsylvania State University State College, Pennsylvania, United States)
Jason T. Wright ORCID
(Pennsylvania State University State College, Pennsylvania, United States)
Jose M. Almenara ORCID
(Grenoble Alpes University Saint-Martin-d'Hères, France)
Cullen H. Blake ORCID
(University of Pennsylvania Philadelphia, Pennsylvania, United States)
Isabelle Boisse
(Aix-Marseille University Marseille, France)
Pía Cortés-Zuleta ORCID
(Aix-Marseille University Marseille, France)
Paul A. Dalba ORCID
(University of California, Riverside Riverside, California, United States)
Rodrigo F. DĂ­az ORCID
(Ministerio de Ciencia y TecnologĂ­a CĂłrdoba, Argentina)
Eric B. Ford ORCID
(Pennsylvania State University State College, Pennsylvania, United States)
Thierry Forveille ORCID
(Grenoble Alpes University Saint-Martin-d'Hères, France)
Robert Gagliano ORCID
(Amateur Astronomer)
Samuel Halverson ORCID
(Jet Propulsion Lab La Cañada Flintridge, California, United States)
Neda Heidari ORCID
(Shahid Beheshti University Tehran, Iran)
Shubham Kanodia ORCID
(Carnegie Institution for Science Washington D.C., District of Columbia, United States)
Flavien Kiefer ORCID
(Laboratory of Space Studies and Instrumentation in Astrophysics Meudon, France)
David W. Latham ORCID
(Harvard-Smithsonian Center for Astrophysics Cambridge, Massachusetts, United States)
Michael W. McElwain ORCID
(Goddard Space Flight Center Greenbelt, Maryland, United States)
Ismael Mireles ORCID
(University of New Mexico Albuquerque, New Mexico, United States)
Claire Moutou
(University of Toulouse II - Le Mirail Toulouse, France)
Joshua Pepper ORCID
(Lehigh University Bethlehem, Pennsylvania, United States)
George R. Ricker ORCID
(Massachusetts Institute of Technology Cambridge, Massachusetts, United States)
Paul Robertson ORCID
(University of California, Irvine Irvine, California, United States)
Arpita Roy ORCID
(Space Telescope Science Institute Baltimore, Maryland, United States)
Martin Schlecker ORCID
(Max Planck Institute for Astronomy Heidelberg, Germany)
Christian Schwab ORCID
(Macquarie University Sydney, New South Wales, Australia)
S. Seager ORCID
(Massachusetts Institute of Technology Cambridge, Massachusetts, United States)
Avi Shporer ORCID
(Massachusetts Institute of Technology Cambridge, Massachusetts, United States)
Guđmundur Stefánsson ORCID
(Pennsylvania State University State College, Pennsylvania, United States)
Ryan C. Terrien ORCID
(Carleton College Northfield, Minnesota, United States)
Eric B. Ting ORCID
(Ames Research Center Mountain View, California, United States)
Joshua N. Winn ORCID
(Princeton University Princeton, New Jersey, United States)
Allison Ann Youngblood ORCID
(Goddard Space Flight Center Greenbelt, Maryland, United States)
Date Acquired
July 18, 2023
Publication Date
May 10, 2023
Publication Information
Publication: Astronomical Journal
Publisher: American Astronomical Society
Volume: 165
Issue: 6
Issue Publication Date: June 1, 2023
ISSN: 0004-6256
e-ISSN: 1538-3881
Subject Category
Astronomy
Astrophysics
Funding Number(s)
WBS: 411672.07.04.02.01
CONTRACT_GRANT: 80HQTR21CA005
CONTRACT_GRANT: 80NM0018D0004
CONTRACT_GRANT: NNG14FC03C
CONTRACT_GRANT: NNN12AA01C
CONTRACT_GRANT: JPL 1547612
CONTRACT_GRANT: JPL 1644767
CONTRACT_GRANT: JPL 1646897
CONTRACT_GRANT: JPL 1679618
CONTRACT_GRANT: HST-HF2-51519.001-A
CONTRACT_GRANT: NAS5-26555
CONTRACT_GRANT: ANR-18-CE31-0019
CONTRACT_GRANT: 18- 2XRP18_2-0136
CONTRACT_GRANT: 80NSSC21K0593
CONTRACT_GRANT: NNX09AF08G
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.
Technical Review
External Peer Committee
Keywords
Exoplanet astronomy
Exoplanet dynamics
Transit photometry
Radial velocity
Elliptical orbits
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