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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Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. IV. Long-term Doppler Spectroscopy for 11 Stars Thought to Host Cool Giant Exoplanets. / Dalba, Paul A.; Kane, Stephen R.; 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.; Močnik, Teo; Murphy, Joseph M. Akana; 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; Villanueva, Steven.
In: Astrophysical Journal, Supplement Series, Vol. 271, No. 1, 16, 2024.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey. IV. Long-term Doppler Spectroscopy for 11 Stars Thought to Host Cool Giant Exoplanets
AU - Dalba, Paul A.
AU - Kane, Stephen R.
AU - Isaacson, Howard
AU - Fulton, Benjamin
AU - Howard, Andrew W.
AU - Schwieterman, Edward W.
AU - Thorngren, Daniel P.
AU - Fortney, Jonathan
AU - Vowell, Noah
AU - Beard, Corey
AU - Blunt, Sarah
AU - Brinkman, Casey L.
AU - Chontos, Ashley
AU - Dai, Fei
AU - Giacalone, Steven
AU - Hill, Michelle L.
AU - Kosiarek, Molly
AU - Lubin, Jack
AU - Mayo, Andrew W.
AU - Močnik, Teo
AU - Murphy, Joseph M. Akana
AU - Petigura, Erik A.
AU - Rice, Malena
AU - Rubenzahl, Ryan A.
AU - Van Zandt, Judah
AU - Weiss, Lauren M.
AU - Dragomir, Diana
AU - Kipping, David
AU - Payne, Matthew J.
AU - Roy, Arpita
AU - Teachey, Alex
AU - Villanueva, Steven
N1 - Publisher Copyright: © 2024. The Author(s). Published by the American Astronomical Society.
PY - 2024
Y1 - 2024
N2 - 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.
AB - 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.
U2 - 10.3847/1538-4365/ad18c3
DO - 10.3847/1538-4365/ad18c3
M3 - Journal article
AN - SCOPUS:85185765052
VL - 271
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1
M1 - 16
ER -
ID: 384563310