The Occurrence of Rocky Habitable-zone Planets around Solar-like Stars from Kepler Data


Steve Bryson, NASA Ames Research Center
Michelle Kunimoto, University of British Columbia
Ravi K. Kopparapu, NASA Goddard Space Flight Center
Jeffrey L. Coughlin, NASA Ames Research Center
William J. Borucki, NASA Ames Research Center
David Koch, NASA Ames Research Center
Victor Silva Aguirre, Aarhus University
Christopher Allen, NASA Ames Research Center
Geert Barentsen, Bay Area Environmental Research Institute
Natalie M. Batalha, University of California, Santa Cruz
Travis Berger, University of Hawai'i
Alan Boss, Carnegie Institution for Science
Lars A. Buchhave, Technical University of Denmark
Christopher J. Burke, Massachusetts Institute of Technology
Douglas A. Caldwell, NASA Ames Research Center
Jennifer R. Campbell, NASA Ames Research Center
Joseph Catanzarite, Cross-Entropy Consulting
Hema Chandrasekaran, Lawrence Livermore National Laboratory
William J. Chaplin, Aarhus University
Jessie L. Christiansen, Caltech/IPAC NASA Exoplanet Science Institute
Jørgen Christensen-Dalsgaard, Aarhus University
David R. Ciardi, Caltech/IPAC NASA Exoplanet Science Institute
Bruce D. Clarke, NASA Ames Research Center
William D. Cochran, University of Texas at Austin
Jessie L. Dotson, NASA Ames Research Center
Laurance R. Doyle, SETI Institute
Eduardo Seperuelo Duarte, NASA Ames Research Center
Edward W. Dunham, Lowell Observatory
Andrea K. Dupree, Center for Astrophysics mid Harvard & Smithsonian
Michael Endl, University of Texas at Austin
James L. Fanson, California Institute of Technology

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Astronomical Journal





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We present the occurrence rates for rocky planets in the habitable zones (HZs) of main-sequence dwarf stars based on the Kepler DR25 planet candidate catalog and Gaia-based stellar properties. We provide the first analysis in terms of star-dependent instellation flux, which allows us to track HZ planets. We define η⊕ as the HZ occurrence of planets with radii between 0.5 and 1.5 R⊕ orbiting stars with effective temperatures between 4800 and 6300 K. We find that η⊕ for the conservative HZ is between... (See article for full abstract).


Stars, Interstellar Medium and the Galaxy | The Sun and the Solar System



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