The Astrophysical Journal Supplement Series (Jan 2024)
Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. IV. Long-term Doppler Spectroscopy for 11 Stars Thought to Host Cool Giant Exoplanets
- Paul A. Dalba,
- Stephen R. Kane,
- Howard Isaacson,
- Benjamin Fulton,
- Andrew W. Howard,
- Edward W. Schwieterman,
- Daniel P. Thorngren,
- Jonathan Fortney,
- Noah Vowell,
- Corey Beard,
- Sarah Blunt,
- Casey L. Brinkman,
- Ashley Chontos,
- Fei Dai,
- Steven Giacalone,
- Michelle L. Hill,
- Molly Kosiarek,
- Jack Lubin,
- Andrew W. Mayo,
- Teo Močnik,
- Joseph M. Akana Murphy,
- Erik A. Petigura,
- Malena Rice,
- Ryan A. Rubenzahl,
- Judah Van Zandt,
- Lauren M. Weiss,
- Diana Dragomir,
- David Kipping,
- Matthew J. Payne,
- Arpita Roy,
- Alex Teachey,
- Steven Villanueva Jr.
Affiliations
- Paul A. Dalba
- ORCiD
- Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95064, USA ; [email protected]; SETI Institute, Carl Sagan Center , 339 Bernardo Avenue, Suite 200, Mountain View, CA 94043, USA
- Stephen R. Kane
- ORCiD
- Department of Earth and Planetary Sciences, University of California , Riverside, CA 92521, USA
- Howard Isaacson
- ORCiD
- Department of Astronomy, University of California Berkeley , Berkeley, CA 94720, USA; Centre for Astrophysics, University of Southern Queensland , Toowoomba, QLD, Australia
- Benjamin Fulton
- ORCiD
- NASA Exoplanet Science Institute/Caltech-IPAC , MC 314-6, 1200 E. California Boulevard, Pasadena, CA 91125, USA
- Andrew W. Howard
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA
- Edward W. Schwieterman
- ORCiD
- Department of Earth and Planetary Sciences, University of California , Riverside, CA 92521, USA
- Daniel P. Thorngren
- ORCiD
- Department of Physics & Astronomy, Johns Hopkins University , Baltimore, MD 21218, USA
- Jonathan Fortney
- ORCiD
- Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95064, USA ; [email protected]
- Noah Vowell
- ORCiD
- Center for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University , East Lansing, MI 48824, USA
- Corey Beard
- ORCiD
- Department of Physics & Astronomy, University of California Irvine , Irvine, CA 92697, USA
- Sarah Blunt
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA
- Casey L. Brinkman
- ORCiD
- Institute for Astronomy, University of Hawai‘i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA
- Ashley Chontos
- ORCiD
- Institute for Astronomy, University of Hawai‘i , 2680 Woodlawn Drive, Honolulu, HI 96822, USA; Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08540, USA
- Fei Dai
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA; Division of Geological and Planetary Sciences , 1200 E California Boulevard, Pasadena, CA 91125, USA
- Steven Giacalone
- ORCiD
- Department of Astronomy, University of California Berkeley , Berkeley, CA 94720, USA
- Michelle L. Hill
- ORCiD
- Department of Earth and Planetary Sciences, University of California , Riverside, CA 92521, USA
- Molly Kosiarek
- ORCiD
- Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95064, USA ; [email protected]
- Jack Lubin
- ORCiD
- Department of Physics & Astronomy, University of California Irvine , Irvine, CA 92697, USA
- Andrew W. Mayo
- ORCiD
- Department of Astronomy, University of California Berkeley , Berkeley, CA 94720, USA; Centre for Star and Planet Formation, Natural History Museum of Denmark & Niels Bohr Institute, University of Copenhagen , Øster Voldgade 5-7, DK-1350 Copenhagen K., Denmark
- Teo Močnik
- ORCiD
- Gemini Observatory/NSF’s NOIRLab , 670 N A’ohoku Place, Hilo, HI 96720, USA
- Joseph M. Akana Murphy
- ORCiD
- Department of Astronomy and Astrophysics, University of California , Santa Cruz, CA 95064, USA ; [email protected]
- Erik A. Petigura
- ORCiD
- Department of Physics & Astronomy, University of California Los Angeles , Los Angeles, CA 90095, USA
- Malena Rice
- ORCiD
- Department of Astronomy, Yale University , New Haven, CT 06511, USA
- Ryan A. Rubenzahl
- ORCiD
- Department of Astronomy, California Institute of Technology , Pasadena, CA 91125, USA
- Judah Van Zandt
- ORCiD
- Department of Physics & Astronomy, University of California Los Angeles , Los Angeles, CA 90095, USA
- Lauren M. Weiss
- ORCiD
- Department of Physics and Astronomy, University of Notre Dame , Notre Dame, IN 46556, USA
- Diana Dragomir
- ORCiD
- Department of Physics & Astronomy, University of New Mexico , 1919 Lomas Boulevard NE, Albuquerque, NM 87131, USA
- David Kipping
- ORCiD
- Department of Astronomy, Columbia University , 550 W 120th Street, New York, NY 10027, USA
- Matthew J. Payne
- ORCiD
- Harvard-Smithsonian Center for Astrophysics , 60 Garden Street, MS 51, Cambridge, MA 02138, USA
- Arpita Roy
- ORCiD
- Department of Physics & Astronomy, Johns Hopkins University , Baltimore, MD 21218, USA; Space Telescope Science Institute , Baltimore, MD 21218, USA
- Alex Teachey
- ORCiD
- Academia Sinica Institute of Astronomy & Astrophysics , Taipei, Taiwan R.O.C.
- Steven Villanueva Jr.
- ORCiD
- NASA Goddard Space Flight Center , 8800 Greenbelt Road, Greenbelt, MD 20771, USA
- DOI
- https://doi.org/10.3847/1538-4365/ad18c3
- Journal volume & issue
-
Vol. 271,
no. 1
p. 16
Abstract
Discovering and characterizing exoplanets at the outer edge of the transit method’s sensitivity has proven challenging owing to geometric biases and the practical difficulties associated with acquiring long observational baselines. Nonetheless, a sample of giant exoplanets on orbits longer than 100 days has been identified by transit hunting missions. We present long-term Doppler spectroscopy for 11 such systems with observation baselines spanning a few years to a decade. We model these radial velocity observations jointly with transit photometry to provide initial characterizations of these objects and the systems in which they exist. Specifically, we make new precise mass measurements for four long-period giant exoplanets (Kepler-111 c, Kepler-553 c, Kepler-849 b, and PH-2 b), we place new upper limits on mass for four others (Kepler-421 b, KOI-1431.01, Kepler-1513 b, and Kepler-952 b), and we show that several confirmed planets are in fact not planetary at all. We present these findings to complement similar efforts focused on closer-in short-period giant planets, and with the hope of inspiring future dedicated studies of cool giant exoplanets.
Keywords
- Extrasolar gaseous giant planets
- Transits
- Radial velocity
- Transit timing variation method
- Exoplanet astronomy
