Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. IV. Long-term Doppler Spectroscopy for 11 Stars Thought to Host Cool Giant Exoplanets
Article
Dalba, Paul A., Kane, Stephen, Isaacson, Howard, Fulton, Benjamin, Howard, Andrew W., Schwieterman, Edward W., Thorngren, Daniel P., Fortney, Jonathan, Vowell, Noah, Beard, Corey, Blunt, Sarah, Brinkman, Casey L., Chontos, Ashley, Dai, Fei, Giacalone, Steven, Hill, Michelle L., Kosiarek, Molly, Lubin, Jack, Mayo, Andrew W., ..., Villanueva, Steven. 2024. "Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. IV. Long-term Doppler Spectroscopy for 11 Stars Thought to Host Cool Giant Exoplanets." Astrophysical Journal Supplement Series. 271 (1). https://doi.org/10.3847/1538-4365/ad18c3
Article Title | Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. IV. Long-term Doppler Spectroscopy for 11 Stars Thought to Host Cool Giant Exoplanets |
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ERA Journal ID | 1058 |
Article Category | Article |
Authors | Dalba, Paul A., Kane, Stephen, Isaacson, Howard, Fulton, Benjamin, Howard, Andrew W., Schwieterman, Edward W., Thorngren, Daniel P., Fortney, Jonathan, Vowell, Noah, Beard, Corey, Blunt, Sarah, Brinkman, Casey L., Chontos, Ashley, Dai, Fei, Giacalone, Steven, Hill, Michelle L., Kosiarek, Molly, Lubin, Jack, Mayo, Andrew W., Mocnik, Teo, Akana Murphy, Joseph M., Petigura, Erik A., Rice, Malena, Rubenzahl, Ryan A., Van Zandt, Judah, Weiss, Lauren M., Dragomir, Diana, Kipping, David, Payne, Matthew J., Roy, Arpita, Teachey, Alex and Villanueva, Steven |
Journal Title | Astrophysical Journal Supplement Series |
Journal Citation | 271 (1) |
Article Number | 16 |
Number of Pages | 25 |
Year | 2024 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0067-0049 |
1538-4365 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-4365/ad18c3 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-4365/ad18c3 |
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 | Exoplanet astronomy; Transit timing variation method; Radial velocity; Transits; Extrasolar gaseous giant planets |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 5101. Astronomical sciences |
Byline Affiliations | University of California Santa Cruz, United States |
SETI Institute, United States | |
University of California Riverside, United Sates | |
University of California Berkeley, United States | |
Centre for Astrophysics | |
NASA Exoplanet Science Institute, United States | |
California Institute of Technology (Caltech), United States | |
Infrared Processing and Analysis Center (IPAC), United States | |
Johns Hopkins University, United States | |
Michigan State University, United States | |
University of California Irvine, United States | |
University of Hawaii, United States | |
Princeton University, United States | |
Division of Geological and Planetary Sciences, United States | |
University of Copenhagen, Denmark | |
Gemini Observatory, United States | |
NSF's National Optical Infrared Astronomy Research Laboratory (NOIRLab), United States | |
University of California Los Angeles, United States | |
Yale University, United States | |
University of Notre Dame, United States | |
University of New Mexico, United States | |
Columbia University, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Space Telescope Science Institute, United States | |
Academia Sinica Institute of Astronomy and Astrophysics, Taiwan | |
NASA Goddard Space Flight Center, United States |
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