The Kepler Giant Planet Search. I. A Decade of Kepler Planet-host Radial Velocities from W. M. Keck Observatory
Article
Weiss, Lauren M., Isaacson, Howard, Howard, Andrew W., Fulton, Benjamin J., Petigura, Erik A., Fabrycky, Daniel, Jontof-Hutter, Daniel, Steffen, Jason H., Schlichting, Hilke E., Wright, Jason T., Beard, Corey, Brinkman, Casey L., Chontos, Ashley, Giacalone, Steven, Hill, Michelle L., Kosiarek, Molly R., MacDougall, Mason G., Mocnik, Teo, Polanski, Alex S., ..., Van Zandt, Judah. 2024. "The Kepler Giant Planet Search. I. A Decade of Kepler Planet-host Radial Velocities from W. M. Keck Observatory." Astrophysical Journal Supplement Series. 270 (1). https://doi.org/10.3847/1538-4365/ad0cab
Article Title | The Kepler Giant Planet Search. I. A Decade of Kepler Planet-host Radial Velocities from W. M. Keck Observatory |
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ERA Journal ID | 1058 |
Article Category | Article |
Authors | Weiss, Lauren M., Isaacson, Howard, Howard, Andrew W., Fulton, Benjamin J., Petigura, Erik A., Fabrycky, Daniel, Jontof-Hutter, Daniel, Steffen, Jason H., Schlichting, Hilke E., Wright, Jason T., Beard, Corey, Brinkman, Casey L., Chontos, Ashley, Giacalone, Steven, Hill, Michelle L., Kosiarek, Molly R., MacDougall, Mason G., Mocnik, Teo, Polanski, Alex S., Turtelboom, Emma V., Tyler, Dakotah and Van Zandt, Judah |
Journal Title | Astrophysical Journal Supplement Series |
Journal Citation | 270 (1) |
Article Number | 8 |
Number of Pages | 85 |
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/ad0cab |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-4365/ad0cab |
Abstract | Despite the importance of Jupiter and Saturn to Earth's formation and habitability, there has not yet been a comprehensive observational study of how giant exoplanets correlate with the architectural properties of close-in, sub-Neptune-sized exoplanets. This is largely because transit surveys are particularly insensitive to planets at orbital separations greater than or similar to 1 au, and so their census of Jupiter-like planets is incomplete, inhibiting our study of the relationship between Jupiter-like planets and the small planets that do transit. To investigate the relationship between close-in, small and distant, giant planets, we conducted the Kepler Giant Planet Survey (KGPS). Using the W. M. Keck Observatory High Resolution Echelle Spectrometer, we spent over a decade collecting 2844 radial velocities (RVs; 2167 of which are presented here for the first time) of 63 Sunlike stars that host 157 transiting planets. We had no prior knowledge of which systems would contain giant planets beyond 1 au, making this survey unbiased with respect to previously detected Jovians. We announce RV-detected companions to 20 stars from our sample. These include 13 Jovians ( 0.3MJ<Msini<13MJ , 1 au < a < 10 au), eight nontransiting sub-Saturns, and three stellar-mass companions. We also present updated masses and densities of 84 transiting planets. The KGPS project leverages one of the longest-running and most data-rich collections of RVs of the NASA Kepler systems yet, and it will provide a basis for addressing whether giant planets help or hinder the growth of sub-Neptune-sized and terrestrial planets. Future KGPS papers will examine the relationship between small, transiting planets and their long-period companions. |
Keywords | Binary star; Extrasolar rocky planets; Super Earths; Mini Neptunes; Exoplanet detection methods; Orbital elements; Transits; Radial velocity; Exoplanet systems; Exoplanet catalogs ; Exoplanet |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 5101. Astronomical sciences |
Byline Affiliations | University of Notre Dame, United States |
University of California Berkeley, United States | |
Centre for Astrophysics | |
California Institute of Technology (Caltech), United States | |
Infrared Processing and Analysis Center (IPAC), United States | |
NASA Exoplanet Science Institute, United States | |
University of California Los Angeles, United States | |
University of Chicago, United States | |
University of the Pacific, United States | |
University of Nevada, United States | |
Nevada Center for Astrophysics, United States | |
Pennsylvania State University, United States | |
University of California Irvine, United States | |
University of Hawaii, United States | |
Princeton University, United States | |
University of California Riverside, United Sates | |
University of California Santa Cruz, United States | |
Gemini Observatory, United States | |
NSF's National Optical Infrared Astronomy Research Laboratory (NOIRLab), United States | |
University of Kansas, United States |
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