The Astronomical Journal (Jan 2024)
The TESS-Keck Survey. XXII. A Sub-Neptune Orbiting TOI-1437
- Daria Pidhorodetska,
- Emily A. Gilbert,
- Stephen R. Kane,
- Thomas Barclay,
- Alex S. Polanski,
- Michelle L. Hill,
- Keivan G. Stassun,
- Steven Giacalone,
- David R. Ciardi,
- Andrew W. Boyle,
- Steve B. Howell,
- Jorge Lillo-Box,
- Mason G. MacDougall,
- Tara Fetherolf,
- Natalie M. Batalha,
- Ian J. M. Crossfield,
- Courtney Dressing,
- Benjamin Fulton,
- Andrew W. Howard,
- Daniel Huber,
- Howard Isaacson,
- Erik A. Petigura,
- Paul Robertson,
- Lauren M. Weiss,
- Isabel Angelo,
- Corey Beard,
- Aida Behmard,
- Sarah Blunt,
- Casey L. Brinkman,
- Ashley Chontos,
- Fei Dai,
- Paul A. Dalba,
- Rae Holcomb,
- Jack Lubin,
- Andrew W. Mayo,
- Joseph M. Akana Murphy,
- Malena Rice,
- Ryan Rubenzahl,
- Nicholas Scarsdale,
- Emma V. Turtelboom,
- Dakotah Tyler,
- Judah Van Zandt,
- Edward W. Schwieterman
Affiliations
- Daria Pidhorodetska
- ORCiD
- Department of Earth and Planetary Sciences, University of California , Riverside, CA 92521, USA
- Emily A. Gilbert
- ORCiD
- Jet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Drive, Pasadena, CA 91109, USA
- Stephen R. Kane
- ORCiD
- Department of Earth and Planetary Sciences, University of California , Riverside, CA 92521, USA
- Thomas Barclay
- ORCiD
- NASA Goddard Space Flight Center , 8800 Greenbelt Road, Greenbelt, MD 20771, USA
- Alex S. Polanski
- ORCiD
- Department of Physics and Astronomy, University of Kansas , Lawrence, KS 66045, USA
- Michelle L. Hill
- ORCiD
- Department of Earth and Planetary Sciences, University of California , Riverside, CA 92521, USA
- Keivan G. Stassun
- ORCiD
- Department of Physics and Astronomy, Vanderbilt University , Nashville, TN 37235, USA
- Steven Giacalone
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA
- David R. Ciardi
- ORCiD
- NASA Exoplanet Science Institute —Caltech/IPAC, Pasadena, CA 91125, USA
- Andrew W. Boyle
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA
- Steve B. Howell
- ORCiD
- NASA Ames Research Center , Moffett Field, CA 94035, USA
- Jorge Lillo-Box
- ORCiD
- Centro de Astrobiología (CAB), CSIC-INTA, ESAC campus , Camino Bajo del Castillo s/n, 28692, Villanueva de la Cañada (Madrid), Spain
- Mason G. MacDougall
- ORCiD
- Department of Physics & Astronomy, University of California Los Angeles , Los Angeles, CA 90095, USA
- Tara Fetherolf
- ORCiD
- Department of Earth and Planetary Sciences, University of California , Riverside, CA 92521, USA; Department of Physics, California State University , San Marcos, CA 92096, USA
- Natalie M. Batalha
- ORCiD
- Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95060, USA
- Ian J. M. Crossfield
- Department of Physics and Astronomy, University of Kansas , Lawrence, KS 66045, USA
- Courtney Dressing
- ORCiD
- Department of Astronomy, University of California Berkeley , Berkeley, CA 94720, USA
- Benjamin Fulton
- ORCiD
- NASA Exoplanet Science Institute/Caltech-IPAC , MC 314-6, 1200 E California Boulevard, Pasadena, CA 91125, USA
- Andrew W. Howard
- ORCiD
- California Institute of Technology , Pasadena, CA 91125, USA
- Daniel Huber
- ORCiD
- Institute for Astronomy, University of Hawai‘i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA; Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney , NSW 2006, Australia
- Howard Isaacson
- ORCiD
- Department of Astronomy, University of California , Berkeley, Berkeley, CA 94720, USA; Centre for Astrophysics, University of Southern Queensland , Toowoomba, QLD, Australia
- Erik A. Petigura
- ORCiD
- Department of Physics & Astronomy, University of California Los Angeles , Los Angeles, CA 90095, USA
- Paul Robertson
- ORCiD
- Department of Physics and Astronomy, University of California , Irvine, CA 92697, USA
- Lauren M. Weiss
- ORCiD
- Department of Physics and Astronomy, University of Notre Dame , Notre Dame, IN 46556, USA
- Isabel Angelo
- ORCiD
- Department of Physics & Astronomy, University of California Los Angeles , Los Angeles, CA 90095, USA
- Corey Beard
- ORCiD
- Department of Physics and Astronomy, University of California , Irvine, CA 92697, USA
- Aida Behmard
- ORCiD
- Department of Astrophysics, American Museum of Natural History , 200 Central Park West, Manhattan, NY 10024, USA
- Sarah Blunt
- ORCiD
- Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Northwestern University , Evanston, IL 60208, USA
- Casey L. Brinkman
- ORCiD
- Institute for Astronomy, University of Hawai‘i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA
- Ashley Chontos
- ORCiD
- Department of Astrophysical Sciences, Princeton University , Princeton, NJ, 08544, USA
- Fei Dai
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA; Institute for Astronomy, University of Hawai‘i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA; Division of Geological and Planetary Sciences , 1200 E California Boulevard, Pasadena, CA, 91125, USA
- Paul A. Dalba
- ORCiD
- Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95060, USA
- Rae Holcomb
- ORCiD
- Department of Physics and Astronomy, University of California , Irvine, CA 92697, USA
- Jack Lubin
- ORCiD
- Department of Physics & Astronomy, University of California Los Angeles , Los Angeles, CA 90095, USA; Department of Physics and Astronomy, University of California , Irvine, CA 92697, USA
- Andrew W. Mayo
- ORCiD
- Department of Astronomy, University of California Berkeley , Berkeley, CA 94720, USA
- Joseph M. Akana Murphy
- ORCiD
- Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95060, USA
- Malena Rice
- ORCiD
- Department of Astronomy, Yale University , New Haven, CT 06511, USA
- Ryan Rubenzahl
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA
- Nicholas Scarsdale
- ORCiD
- Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95060, USA
- Emma V. Turtelboom
- ORCiD
- Department of Astronomy, University of California Berkeley , Berkeley, CA 94720, USA
- Dakotah Tyler
- ORCiD
- Department of Physics & Astronomy, University of California Los Angeles , Los Angeles, CA 90095, USA
- Judah Van Zandt
- ORCiD
- Department of Physics & Astronomy, University of California Los Angeles , Los Angeles, CA 90095, USA
- Edward W. Schwieterman
- ORCiD
- Department of Earth and Planetary Sciences, University of California , Riverside, CA 92521, USA
- DOI
- https://doi.org/10.3847/1538-3881/ad6901
- Journal volume & issue
-
Vol. 168,
no. 3
p. 135
Abstract
Exoplanet discoveries have revealed a dramatic diversity of planet sizes across a vast array of orbital architectures. Sub-Neptunes are of particular interest; due to their absence in our own solar system, we rely on demographics of exoplanets to better understand their bulk composition and formation scenarios. Here, we present the discovery and characterization of TOI-1437 b, a sub-Neptune with a 18.84 day orbit around a near-solar analog ( M _⋆ = 1.10 ± 0.10 M _☉ , R _⋆ =1.17 ± 0.12 R _☉ ). The planet was detected using photometric data from the Transiting Exoplanet Survey Satellite (TESS) mission and radial velocity (RV) follow-up observations were carried out as a part of the TESS-Keck Survey using both the HIRES instrument at Keck Observatory and the Levy Spectrograph on the Automated Planet Finder telescope. A combined analysis of these data reveal a planet radius of R _p = 2.24 ± 0.23 R _⊕ and a mass measurement of M _p = 9.6 ± 3.9 M _⊕ ). TOI-1437 b is one of few (∼50) known transiting sub-Neptunes orbiting a solar-mass star that has a RV mass measurement. As the formation pathway of these worlds remains an unanswered question, the precise mass characterization of TOI-1437 b may provide further insight into this class of planet.
Keywords
