The Astronomical Journal (Jan 2023)
TOI-3984 A b and TOI-5293 A b: Two Temperate Gas Giants Transiting Mid-M Dwarfs in Wide Binary Systems
- Caleb I. Cañas,
- Shubham Kanodia,
- Jessica Libby-Roberts,
- Andrea S. J. Lin,
- Maria Schutte,
- Luke Powers,
- Sinclaire Jones,
- Andrew Monson,
- Songhu Wang,
- Guđmundur Stefánsson,
- William D. Cochran,
- Paul Robertson,
- Suvrath Mahadevan,
- Adam F. Kowalski,
- John Wisniewski,
- Brock A. Parker,
- Alexander Larsen,
- Franklin A. L. Chapman,
- Henry A. Kobulnicky,
- Arvind F. Gupta,
- Mark E. Everett,
- Bryan Edward Penprase,
- Gregory Zeimann,
- Corey Beard,
- Chad F. Bender,
- Knicole D. Colón,
- Scott A. Diddams,
- Connor Fredrick,
- Samuel Halverson,
- Joe P. Ninan,
- Lawrence W. Ramsey,
- Arpita Roy,
- Christian Schwab
Affiliations
- Caleb I. Cañas
- ORCiD
- NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, USA ; [email protected]; Department of Astronomy & Astrophysics, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA
- Shubham Kanodia
- ORCiD
- Department of Astronomy & Astrophysics, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA; Earth and Planets Laboratory, Carnegie Institution for Science , 5241 Broad Branch Road NW, Washington, DC 20015, USA
- Jessica Libby-Roberts
- ORCiD
- Department of Astronomy & Astrophysics, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA
- Andrea S. J. Lin
- ORCiD
- Department of Astronomy & Astrophysics, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA
- Maria Schutte
- ORCiD
- Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma , 440 West Brooks Street, Norman, OK 73019, USA
- Luke Powers
- ORCiD
- Department of Astronomy & Astrophysics, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA
- Sinclaire Jones
- ORCiD
- Department of Astronomy, The Ohio State University , 4055 McPherson Laboratory, Columbus, OH 43210, USA; Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08540, USA
- Andrew Monson
- ORCiD
- Steward Observatory, The University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721, USA
- Songhu Wang
- ORCiD
- Department of Astronomy, Indiana University , 727 East 3rd Street, Bloomington, IN 47405-7105, USA
- Guđmundur Stefánsson
- ORCiD
- Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08540, USA
- William D. Cochran
- ORCiD
- McDonald Observatory and Center for Planetary Systems Habitability, The University of Texas at Austin , Austin, TX 78730, USA
- Paul Robertson
- ORCiD
- Department of Physics & Astronomy, The University of California , Irvine, Irvine, CA 92697, USA
- Suvrath Mahadevan
- ORCiD
- Department of Astronomy & Astrophysics, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA; ETH Zurich, Institute for Particle Physics & Astrophysics, Zurich, Switzerland
- Adam F. Kowalski
- ORCiD
- National Solar Observatory, University of Colorado Boulder , 3665 Discovery Drive, Boulder, CO 80303, USA; Department of Astrophysical and Planetary Sciences, University of Colorado , 2000 Colorado Avenue, Boulder, CO 80305, USA; Laboratory for Atmospheric and Space Physics, University of Colorado Boulder , 3665 Discovery Drive, Boulder, CO 80303, USA
- John Wisniewski
- ORCiD
- Department of Physics and Astronomy, George Mason University , Fairfax, VA 22030, USA
- Brock A. Parker
- ORCiD
- Department of Physics & Astronomy, University of Wyoming , Laramie, WY 82070, USA
- Alexander Larsen
- ORCiD
- Department of Physics & Astronomy, University of Wyoming , Laramie, WY 82070, USA
- Franklin A. L. Chapman
- Department of Physics & Astronomy, University of Wyoming , Laramie, WY 82070, USA
- Henry A. Kobulnicky
- ORCiD
- Department of Physics & Astronomy, University of Wyoming , Laramie, WY 82070, USA
- Arvind F. Gupta
- ORCiD
- Department of Astronomy & Astrophysics, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA
- Mark E. Everett
- ORCiD
- NSF’s National Optical-Infrared Astronomy Research Laboratory , 950 North Cherry Avenue, Tucson, AZ 85719, USA
- Bryan Edward Penprase
- ORCiD
- Soka University of America , Aliso Viejo, CA 92656, USA
- Gregory Zeimann
- ORCiD
- Hobby Eberly Telescope, University of Texas at Austin , Austin, TX 78712, USA
- Corey Beard
- ORCiD
- Department of Physics & Astronomy, The University of California , Irvine, Irvine, CA 92697, USA
- Chad F. Bender
- ORCiD
- Steward Observatory, The University of Arizona , 933 North Cherry Avenue, Tucson, AZ 85721, USA
- Knicole D. Colón
- ORCiD
- NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, USA ; [email protected]
- Scott A. Diddams
- ORCiD
- Electrical, Computer & Energy Engineering, 425 UCB, University of Colorado , Boulder, CO 80309, USA; Department of Physics, 390 UCB, University of Colorado , Boulder, CO 80309, USA; National Institute of Standards & Technology, 325 Broadway, Boulder, CO 80305, USA
- Connor Fredrick
- ORCiD
- Department of Physics, 390 UCB, University of Colorado , Boulder, CO 80309, USA; National Institute of Standards & Technology, 325 Broadway, Boulder, CO 80305, USA
- Samuel Halverson
- ORCiD
- Jet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Drive, Pasadena, CA 91109, USA
- Joe P. Ninan
- ORCiD
- Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research , Homi Bhabha Road, Colaba, Mumbai 400005, India
- Lawrence W. Ramsey
- ORCiD
- Department of Astronomy & Astrophysics, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, The Pennsylvania State University , 525 Davey Laboratory, University Park, PA 16802, 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 North Charles Street, Baltimore, MD 21218, USA
- Christian Schwab
- ORCiD
- School of Mathematical and Physical Sciences, Macquarie University , Balaclava Road, North Ryde, NSW 2109, Australia
- DOI
- https://doi.org/10.3847/1538-3881/acdac7
- Journal volume & issue
-
Vol. 166,
no. 1
p. 30
Abstract
We confirm the planetary nature of two gas giants discovered by TESS to transit M dwarfs with stellar companions at wide separations. TOI-3984 A ( J = 11.93) is an M4 dwarf hosting a short-period (4.353326 ± 0.000005 days) gas giant ( M _p = 0.14 ± 0.03 M _J and R _p = 0.71 ± 0.02 R _J ) with a wide-separation white dwarf companion. TOI-5293 A ( J = 12.47) is an M3 dwarf hosting a short-period (2.930289 ± 0.000004 days) gas giant ( M _p = 0.54 ± 0.07 M _J and R _p = 1.06 ± 0.04 R _J ) with a wide-separation M dwarf companion. We characterize both systems using a combination of ground- and space-based photometry, speckle imaging, and high-precision radial velocities from the Habitable-zone Planet Finder and NEID spectrographs. TOI-3984 A b ( T _eq = 563 ± 15 K and $\mathrm{TSM}={138}_{-27}^{+29}$ ) and TOI-5293 A b ( ${T}_{\mathrm{eq}}={675}_{-30}^{+42}$ K and TSM = 92 ± 14) are two of the coolest gas giants among the population of hot Jupiter–sized gas planets orbiting M dwarfs and are favorable targets for atmospheric characterization of temperate gas giants and 3D obliquity measurements to probe system architecture and migration scenarios.
Keywords
