An Earth-sized planet in the habitable zone of a cool star

Elisa V. Quintana, Thomas Barclay, Sean N. Raymond, Jason F. Rowe, Emeline Bolmont, Douglas A. Caldwell, Steve B. Howell, Stephen R. Kane, Daniel Huber, Justin R. Crepp, Jack J. Lissauer, David R. Ciardi, Jeffrey L. Coughlin, Mark E. Everett, Christopher E. Henze, Elliott Horch, Howard Isaacson, Eric B. Ford, Fred C. Adams, Martin StillRoger C. Hunter, Billy Quarles, Franck Selsis

Research output: Contribution to journalArticle

Abstract

The quest for Earth-like planets is a major focus of current exoplanet research. Although planets that are Earth-sized and smaller have been detected, these planets reside in orbits that are too close to their host star to allow liquid water on their surfaces. We present the detection of Kepler-186f, a 1.11 ± 0.14 Earth-radius planet that is the outermost of five planets, all roughly Earth-sized, that transit a 0.47 ± 0.05 solar-radius star. The intensity and spectrum of the star's radiation place Kepler-186f in the stellar habitable zone, implying that if Kepler-186f has an Earth-like atmosphere and water at its surface, then some of this water is likely to be in liquid form.

Original languageEnglish
Pages (from-to)277-280
Number of pages4
JournalScience
Volume344
Issue number6181
DOIs
Publication statusPublished - 1 Jan 2014

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    Quintana, E. V., Barclay, T., Raymond, S. N., Rowe, J. F., Bolmont, E., Caldwell, D. A., Howell, S. B., Kane, S. R., Huber, D., Crepp, J. R., Lissauer, J. J., Ciardi, D. R., Coughlin, J. L., Everett, M. E., Henze, C. E., Horch, E., Isaacson, H., Ford, E. B., Adams, F. C., ... Selsis, F. (2014). An Earth-sized planet in the habitable zone of a cool star. Science, 344(6181), 277-280. https://doi.org/10.1126/science.1249403