Characteristics of Kepler planetary candidates based on the first data set

William J. Borucki, David G. Koch, Gibor Basri, Natalie Batalha, Alan Boss, Timothy M. Brown, Douglas Caldwell, Jørgen Christensen-Dalsgaard, William D. Cochran, Edna Devore, Edward W. Dunham, Andrea K. Dupree, Thomas N. Gautier, John C. Geary, Ronald Gilliland, Alan Gould, Steve B. Howell, Jon M. Jenkins, Hans Kjeldsen, David W. LathamJack J. Lissauer, Geoffrey W. Marcy, David G. Monet, Dimitar Sasselov, Jill Tarter, David Charbonneau, Laurance Doyle, Eric B. Ford, Jonathan Fortney, Matthew J. Holman, Sara Seager, Jason H. Steffen, William F. Welsh, Christopher Allen, Stephen T. Bryson, Lars Buchhave, Hema Chandrasekaran, Jessie L. Christiansen, David Ciardi, Bruce D. Clarke, Jessie L. Dotson, Michael Endl, Debra Fischer, Francois Fressin, Michael Haas, Elliott Horch, Andrew Howard, Howard Isaacson, Jeffery Kolodziejczak, Jie Li, Phillip Macqueen, Søren Meibom, Andrej Prsa, Elisa V. Quintana, Jason Rowe, William Sherry, Peter Tenenbaum, Guillermo Torres, Joseph D. Twicken, Jeffrey Van Cleve, Lucianne Walkowicz, Hayley Wu

Research output: Contribution to journalArticlepeer-review

103 Scopus citations


In the spring of 2009, the Kepler Mission commenced high-precision photometry on nearly 156,000 stars to determine the frequency and characteristics of small exoplanets, conduct a guest observer program, and obtain asteroseismic data on a wide variety of stars. On 2010 June 15, the Kepler Mission released most of the data from the first quarter of observations. At the time of this data release, 705 stars from this first data set have exoplanet candidates with sizes from as small as that of Earth to larger than that of Jupiter. Here we give the identity and characteristics of 305 released stars with planetary candidates. Data for the remaining 400 stars with planetary candidates will be released in 2011 February. More than half the candidates on the released list have radii less than half that of Jupiter. Five candidates are present in and near the habitable zone; two near super-Earth size, and three bracketing the size of Jupiter. The released stars also include five possible multi-planet systems. One of these has two Neptune-size (2.3 and 2.5 Earth radius) candidates with near-resonant periods.

Original languageEnglish (US)
JournalAstrophysical Journal
Issue number2
StatePublished - Feb 20 2011

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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