Definition
Kepler-186f is the first Earth-sized planet in the habitable zone detected by the Kepler space telescope. This planet is the outermost of the five planets transiting Kepler 186, a 0.47 solar radius, main sequence M1 star with a surface temperature of 3788 K. The inner four planets of this system were detected using the Kepler data from the first 2 years (Rowe et al. 2014; Lissauer et al. 2014). These planets are all smaller than 1.5 Earth radii and have orbital periods between 3.9 and 22.4 days. Kepler-186f was detected with an additional year of data (Quintana et al. 2014). Figure 1 shows an artist’s rendering of this planetary system.
An artist’s rendering of Kepler 186f comparing to the inner Solar System. (Courtesy of NASA)
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References and Further Reading
Bolmont E, Raymond SN, von Paris P, Selsis F, Hersant F, Quintana EV, Barclay T (2014) Formation, tidal evolution, and habitability of the Kepler-186 system. Astrophys J 793:3
Kopparapu RK, Ramirez R, Kasting JF, Eymet V, Robinson TD, Mahadevan S, Terrien RC, Domagal-Goldman S, Meadows V, Deshpande R (2013a) Erratum: “Habitable Zones around Main-sequence Stars: New Estimates” (2013a, ApJ, 765, 131). Astrophys J 770:82
Kopparapu RK, Ramirez R, Kasting JF, Eymet V, Robinson TD, Mahadevan S, Terrien RC, Domagal-Goldman S, Meadows V, Deshpande R (2013b) Habitable Zones around Main-sequence Stars: New Estimates. Astrophys J 765:131
Lissauer JJ, Marcy GW, Bryson ST, Rowe JF, Jontof-Hutter D, Agol E, Borucki WJ, Carter JA, Ford EB, Gilliland RL, Kolbl R, Star KM, Steffen JH, Torres G (2014) Validation of Kepler’s Multiple Planet Candidates. II. Refined Statistical Framework and Descriptions of Systems of Special Interest. Astrophys J 784:44
Quintana EV, Barclay T, Raymond SN, Rowe JF, Bolmont E, Caldwell DA, Howell SB, Kane SR, Huber D, Crepp JR, Lissauer JJ, Ciardi DR, Coughlin JL, Everett ME, Henze CE, Horch E, Isaacson H, Ford EB, Adams FC, Still M, Hunter RC, Quarles B, Selsis F (2014) An Earth-Sized Planet in the Habitable Zone of a Cool Star. Science 344:277
Rowe JF, Bryson ST, Marcy GW, Lissauer JJ, Jontof-Hutter D, Mullally F, Gilliland RL, Issacson H, Ford E, Howell SB, Borucki WJ, Haas M, Huber D, Steffen JH, Thompson SE, Quintana E, Barclay T, Still M, Fortney J, Gautier TN, Hunter R, Caldwell DA, Ciardi DR, Devore E, Cochran W, Jenkins J, Agol E, Carter JA, Geary J (2014) Validation of Kepler’s Multiple Planet Candidates. III. Light Curve Analysis and Announcement of Hundreds of New Multi-planet Systems. Astrophys J 784:45
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Haghighipour, N. (2021). Kepler 186f: First Earth-Sized Planet in Habitable Zone. In: Gargaud, M., et al. Encyclopedia of Astrobiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27833-4_5294-3
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DOI: https://doi.org/10.1007/978-3-642-27833-4_5294-3
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Kepler 186f: First Earth-Sized Planet in Habitable Zone- Published:
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DOI: https://doi.org/10.1007/978-3-642-27833-4_5294-3
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DOI: https://doi.org/10.1007/978-3-642-27833-4_5294-2