The Astrophysical Journal Letters (Jan 2023)
TOI-1859b: A 64 Day Warm Jupiter on an Eccentric and Misaligned Orbit
- Jiayin Dong,
- Songhu Wang,
- Malena Rice,
- George Zhou,
- Chelsea X. Huang,
- Rebekah I. Dawson,
- Gudmundur K. Stefánsson,
- Samuel Halverson,
- Shubham Kanodia,
- Suvrath Mahadevan,
- Michael W. McElwain,
- Jaime A. Alvarado-Montes,
- Joe P. Ninan,
- Paul Robertson,
- Arpita Roy,
- Christian Schwab,
- Sarah E. Logsdon,
- Ryan C. Terrien,
- Karen A. Collins,
- Gregor Srdoc,
- Ramotholo Sefako,
- Didier Laloum,
- David W. Latham,
- Allyson Bieryla,
- Paul A. Dalba,
- Diana Dragomir,
- Steven Villanueva Jr.,
- Steve B. Howell,
- George R. Ricker,
- S. Seager,
- Joshua N. Winn,
- Jon M. Jenkins,
- Avi Shporer,
- David Rapetti
Affiliations
- Jiayin Dong
- ORCiD
- Center for Computational Astrophysics, Flatiron Institute , 162 Fifth Avenue, New York, NY 10010, USA ; [email protected]; 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
- Songhu Wang
- ORCiD
- Department of Astronomy, Indiana University , Bloomington, IN 47405, USA
- Malena Rice
- ORCiD
- Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA; Department of Astronomy, Yale University , New Haven, CT 06511, USA
- George Zhou
- ORCiD
- University of Southern Queensland , Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia
- Chelsea X. Huang
- ORCiD
- University of Southern Queensland , Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia
- 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
- Gudmundur K. Stefánsson
- ORCiD
- Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08540, USA
- Samuel Halverson
- ORCiD
- Jet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Drive, Pasadena, CA 91109, USA
- Shubham Kanodia
- ORCiD
- Earth and Planets Laboratory, Carnegie Institution for Science , 5241 Broad Branch Road, NW, Washington, DC 20015, USA
- Suvrath Mahadevan
- 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; ETH Zurich, Institute for Particle Physics & Astrophysics, Zurich, Switzerland
- Michael W. McElwain
- ORCiD
- Exoplanets and Stellar Astrophysics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
- Jaime A. Alvarado-Montes
- ORCiD
- School of Mathematical and Physical Sciences, Macquarie University , Balaclava Road, North Ryde, NSW 2109, Australia; Research Centre for Astronomy, Astrophysics and Astrophotonics, Macquarie University , Balaclava Road, North Ryde, NSW 2109, Australia
- Joe P. Ninan
- 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
- 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 Drive, Baltimore, MD 21218, USA; Department of Physics and Astronomy, Johns Hopkins University , 3400 N Charles Street, Baltimore, MD 21218, USA
- Christian Schwab
- ORCiD
- School of Mathematical and Physical Sciences, Macquarie University , Balaclava Road, North Ryde, NSW 2109, Australia; Research Centre for Astronomy, Astrophysics and Astrophotonics, Macquarie University , Balaclava Road, North Ryde, NSW 2109, Australia
- Sarah E. Logsdon
- ORCiD
- NSF’s National Optical-Infrared Astronomy Research Laboratory , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- Ryan C. Terrien
- ORCiD
- Carleton College, One North College Street, Northfield, MN 55057, USA
- Karen A. Collins
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
- Gregor Srdoc
- Kotizarovci Observatory, Sarsoni 90, 51216 Viskovo, Croatia
- Ramotholo Sefako
- ORCiD
- South African Astronomical Observatory, P.O. Box 9, Observatory, Cape Town 7935, South Africa
- Didier Laloum
- AAVSO, 185 Alewife Brook Parkway, Suite 410, Cambridge, MA 02138, USA
- David W. Latham
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
- Allyson Bieryla
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
- 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
- Diana Dragomir
- ORCiD
- Department of Physics and Astronomy, University of New Mexico , Albuquerque, NM, USA
- Steven Villanueva Jr.
- ORCiD
- NASA Goddard Space Flight Center , Exoplanets and Stellar Astrophysics Laboratory (Code 667), Greenbelt, MD 20771, USA
- Steve B. Howell
- ORCiD
- NASA Ames Research Center , Moffett Field, CA 94035, USA
- George R. Ricker
- ORCiD
- Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA
- 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
- Joshua N. Winn
- ORCiD
- Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08540, USA
- Jon M. Jenkins
- ORCiD
- NASA Ames Research Center , Moffett Field, CA 94035, USA
- Avi Shporer
- ORCiD
- Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA
- David Rapetti
- ORCiD
- NASA Ames Research Center , Moffett Field, CA 94035, USA; Research Institute for Advanced Computer Science, Universities Space Research Association , Washington, DC 20024, USA
- DOI
- https://doi.org/10.3847/2041-8213/acd93d
- Journal volume & issue
-
Vol. 951,
no. 2
p. L29
Abstract
Warm Jupiters are close-in giant planets with relatively large planet–star separations (i.e., 10 < a / R _⋆ < 100). Given their weak tidal interactions with their host stars, measurements of stellar obliquity may be used to probe the initial obliquity distribution and dynamical history for close-in gas giants. Using spectroscopic observations, we confirm the planetary nature of TOI-1859b and determine the stellar obliquity of TOI-1859 to be λ = 38.9 ${}_{-2.7}^{+2.8}$ ° relative to its planetary companion using the Rossiter–McLaughlin effect. TOI-1859b is a 64 day warm Jupiter orbiting around a late F dwarf and has an orbital eccentricity of 0.57 ${}_{-0.16}^{+0.12}$ inferred purely from transit light curves. The eccentric and misaligned orbit of TOI-1859b is likely an outcome of dynamical interactions, such as planet–planet scattering and planet–disk resonance crossing.
Keywords
