The Astronomical Journal (Jan 2023)
TOI-4562b: A Highly Eccentric Temperate Jupiter Analog Orbiting a Young Field Star
- Alexis Heitzmann,
- George Zhou,
- Samuel N. Quinn,
- Chelsea X. Huang,
- Jiayin Dong,
- L. G. Bouma,
- Rebekah I. Dawson,
- Stephen C. Marsden,
- Duncan Wright,
- Pascal Petit,
- Karen A. Collins,
- Khalid Barkaoui,
- Robert A. Wittenmyer,
- Edward Gillen,
- Rafael Brahm,
- Melissa Hobson,
- Coel Hellier,
- Carl Ziegler,
- César Briceño,
- Nicholas Law,
- Andrew W. Mann,
- Steve B. Howell,
- Crystal L. Gnilka,
- Colin Littlefield,
- David W. Latham,
- Jack J. Lissauer,
- Elisabeth R. Newton,
- Daniel M. Krolikowski,
- Ronan Kerr,
- Rayna Rampalli,
- Stephanie T. Douglas,
- Nora L. Eisner,
- Nathalie Guedj,
- Guoyou Sun,
- Martin Smit,
- Marc Huten,
- Thorsten Eschweiler,
- Lyu Abe,
- Tristan Guillot,
- George Ricker,
- Roland Vanderspek,
- Sara Seager,
- Jon M. Jenkins,
- Eric B. Ting,
- Joshua N. Winn,
- David R. Ciardi,
- Andrew M. Vanderburg,
- Christopher J. Burke,
- David R. Rodriguez,
- Tansu Daylan
Affiliations
- Alexis Heitzmann
- ORCiD
- University of Southern Queensland , Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia ; [email protected]; Astronomy Unit, Queen Mary University of London , Mile End Road, London E1 4NS, UK
- George Zhou
- ORCiD
- University of Southern Queensland , Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia ; [email protected]
- Samuel N. Quinn
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Chelsea X. Huang
- ORCiD
- University of Southern Queensland , Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia ; [email protected]
- Jiayin Dong
- ORCiD
- Center for Computational Astrophysics, Flatiron Institute , 162 Fifth Avenue, New York, NY 10010, USA; Department of Astronomy & Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA
- L. G. Bouma
- ORCiD
- Cahill Center for Astrophysics, California Institute of Technology , Pasadena, CA 91125, USA
- Rebekah I. Dawson
- ORCiD
- Department of Astronomy & Astrophysics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA
- Stephen C. Marsden
- ORCiD
- University of Southern Queensland , Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia ; [email protected]
- Duncan Wright
- ORCiD
- University of Southern Queensland , Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia ; [email protected]
- Pascal Petit
- ORCiD
- Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse , CNRS, CNES, 14 avenue Edouard Belin, F-31400 Toulouse, France
- Karen A. Collins
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Khalid Barkaoui
- ORCiD
- Astrobiology Research Unit, Université de Liège , 19C Allée du 6 Août, B-4000 Liège, Belgium; Department of Earth, Atmospheric and Planetary Science, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, MA 02139, USA; Instituto de Astrofísica de Canarias (IAC) , Calle Vía Láctea s/n, E-38200, La Laguna, Tenerife, Spain
- Robert A. Wittenmyer
- ORCiD
- University of Southern Queensland , Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia ; [email protected]
- Edward Gillen
- ORCiD
- Astronomy Unit, Queen Mary University of London , Mile End Road, London E1 4NS, UK; Astrophysics Group, Cavendish Laboratory , J.J. Thomson Avenue, Cambridge CB3 0HE, UK
- Rafael Brahm
- ORCiD
- Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez , Av. Diagonal las Torres 2640, Peñalolén, Santiago, Chile; Millennium Institute of Astrophysics MAS , Nuncio Monsenor Sotero Sanz 100, Of. 104, Providencia, Santiago, Chile
- Melissa Hobson
- ORCiD
- Millennium Institute of Astrophysics MAS , Nuncio Monsenor Sotero Sanz 100, Of. 104, Providencia, Santiago, Chile; Max Planck Institute for Astronomy , Königstuhl 17, D-69117–Heidelberg, Germany
- Coel Hellier
- ORCiD
- Astrophysics Group, Keele University , Staffordshire, ST5 5BG, UK
- Carl Ziegler
- ORCiD
- Department of Physics, Engineering and Astronomy, Stephen F. Austin State University , 1936 North Street, Nacogdoches, TX 75962, USA
- César Briceño
- ORCiD
- Cerro Tololo Inter-American Observatory , Casilla 603, La Serena, Chile
- Nicholas Law
- ORCiD
- Department of Physics and Astronomy, The University of North Carolina at Chapel Hill , Chapel Hill, NC 27599-3255, USA
- Andrew W. Mann
- ORCiD
- Department of Physics and Astronomy, The University of North Carolina at Chapel Hill , Chapel Hill, NC 27599-3255, USA
- Steve B. Howell
- ORCiD
- NASA Ames Research Center , Moffett Field, CA 94035, USA
- Crystal L. Gnilka
- ORCiD
- NASA Ames Research Center , Moffett Field, CA 94035, USA
- Colin Littlefield
- ORCiD
- NASA Ames Research Center , Moffett Field, CA 94035, USA; Bay Area Environmental Research Institute , Moffett Field, CA 94035, USA
- David W. Latham
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Jack J. Lissauer
- ORCiD
- Space Science & Astrobiology Division , MS 245-3, NASA Ames Research Center , Moffett Field, CA 94035, USA
- Elisabeth R. Newton
- ORCiD
- Department of Physics and Astronomy, Dartmouth College , Hanover, NH 03755, USA
- Daniel M. Krolikowski
- ORCiD
- Department of Astronomy, The University of Texas at Austin , Austin, TX 78712, USA
- Ronan Kerr
- ORCiD
- Department of Astronomy, The University of Texas at Austin , Austin, TX 78712, USA
- Rayna Rampalli
- ORCiD
- Department of Physics and Astronomy, Dartmouth College , Hanover, NH 03755, USA
- Stephanie T. Douglas
- ORCiD
- Department of Physics, Lafayette College , 730 High Street, Easton, PA 18042, USA
- Nora L. Eisner
- ORCiD
- Sub-department of Astrophysics, University of Oxford , Keble Road, Oxford, UK
- Nathalie Guedj
- ORCiD
- Citizen Scientist, Zooniverse c/o University of Oxford , Keble Road, Oxford OX1 3RH, UK
- Guoyou Sun
- ORCiD
- Citizen Scientist, Zooniverse c/o University of Oxford , Keble Road, Oxford OX1 3RH, UK
- Martin Smit
- Citizen Scientist, Zooniverse c/o University of Oxford , Keble Road, Oxford OX1 3RH, UK
- Marc Huten
- Citizen Scientist, Zooniverse c/o University of Oxford , Keble Road, Oxford OX1 3RH, UK
- Thorsten Eschweiler
- Citizen Scientist, Zooniverse c/o University of Oxford , Keble Road, Oxford OX1 3RH, UK
- Lyu Abe
- Université Côte d’Azur , Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, CS 34229, F-06304 Nice Cedex 4, France
- Tristan Guillot
- ORCiD
- Université Côte d’Azur , Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, CS 34229, F-06304 Nice Cedex 4, France
- George Ricker
- ORCiD
- Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA
- Roland Vanderspek
- ORCiD
- Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA
- Sara 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
- Jon M. Jenkins
- ORCiD
- NASA Ames Research Center , Moffett Field, CA 94035, USA
- Eric B. Ting
- ORCiD
- NASA Ames Research Center , Moffett Field, CA 94035, USA
- Joshua N. Winn
- ORCiD
- Department of Astrophysical Sciences, Princeton University , Princeton, NJ 08544, USA
- David R. Ciardi
- ORCiD
- NASA Exoplanet Science Institute , Caltech/IPAC, 1200 E. California Avenue, Pasadena, CA 91125, USA
- Andrew M. Vanderburg
- ORCiD
- Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA; Department of Astronomy, University of Wisconsin-Madison , Madison, WI 53706, USA
- Christopher J. Burke
- ORCiD
- Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA
- David R. Rodriguez
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD, 21218, USA
- Tansu Daylan
- ORCiD
- Department of Astrophysical Sciences, Princeton University , Princeton, NJ 08544, USA
- DOI
- https://doi.org/10.3847/1538-3881/acb5a2
- Journal volume & issue
-
Vol. 165,
no. 3
p. 121
Abstract
We report the discovery of TOI-4562b (TIC-349576261), a Jovian planet orbiting a young F7V-type star, younger than the Praesepe/Hyades clusters (<700 Myr). This planet stands out because of its unusually long orbital period for transiting planets with known masses ( P _orb = 225.11781 ${}_{-0.00022}^{+0.00025}$ days) and because it has a substantial eccentricity ( e = 0.76 ${}_{-0.02}^{+0.02}$ ). The location of TOI-4562 near the southern continuous viewing zone of TESS allowed observations throughout 25 sectors, enabling an unambiguous period measurement from TESS alone. Alongside the four available TESS transits, we performed follow-up photometry using the South African Astronomical Observatory node of the Las Cumbres Observatory and spectroscopy with the CHIRON spectrograph on the 1.5 m SMARTS telescope. We measure a radius of ${1.118}_{+0.013}^{-0.014}$ R _J and a mass of 2.30 ${}_{-0.47}^{+0.48}$ M _J for TOI-4562b. The radius of the planet is consistent with contraction models describing the early evolution of the size of giant planets. We detect tentative transit timing variations at the ∼20 minutes level from five transit events, favoring the presence of a companion that could explain the dynamical history of this system if confirmed by future follow-up observations. With its current orbital configuration, tidal timescales are too long for TOI-4562b to become a hot Jupiter via high-eccentricity migration though it is not excluded that interactions with the possible companion could modify TOI-4562b’s eccentricity and trigger circularization. The characterization of more such young systems is essential to set constraints on models describing giant-planet evolution.
Keywords
- Exoplanets
- Exoplanet migration
- Young stellar objects
- Extrasolar gaseous giant planets
- Elliptical orbits
- Stellar activity
