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

Quintana, Elisa V. and Barclay, Thomas and Raymond, Sean N. and Rowe, Jason F. and Bolmont, Emeline and Caldwell, Douglas A. and Howell, Steve B. and Kane, Stephen R. and Huber, Daniel and Crepp, Justin R. and Lissauer, Jack J. and Ciardi, David R. and Coughlin, Jeffrey L. and Everett, Mark E. and Henze, Christopher E. and Horch, Elliott and Isaacson, Howard and Ford, Eric B. and Adams, Fred C. and Still, Martin and Hunter, Roger C. and Quarles, Billy and Selsis, Franck (2014) An Earth-sized planet in the habitable zone of a cool star. Science, 344 (6181). pp. 277-280. ISSN 0036-8075

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.


Statistics for USQ ePrint 32120
Statistics for this ePrint Item
Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 14 Jun 2017 21:40
Last Modified: 14 Jun 2017 21:40
Uncontrolled Keywords: Earth (Planet); Exobiology; Extraterrestrial Environment; Planets; Stars, Celestial; Water; Physiology; Geobase
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Identification Number or DOI: 10.1126/science.1249403
URI: http://eprints.usq.edu.au/id/eprint/32120

Actions (login required)

View Item Archive Repository Staff Only