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Kepler-47: A Transiting Circumbinary Multiplanet System.

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Title: Kepler-47: A Transiting Circumbinary Multiplanet System.
Authors: Orosz, Jerome A., Welsh, William F., Carter, Joshua A., Fabrycky, Daniel C., Cochran, William D., Endl, Michael, Ford, Eric B., Haghighipour, Nader, MacQueen, Phillip J., Mazeh, Tsevi, Sanchis-Ojeda, Roberto, Short, Donald R., Torres, Guillermo, Agol, Eric, Buchhave, Lars A., Doyle, Laurance R., Isaacson, Howard, Lissauer, Jack J., Marcy, Geoffrey W., Shporer, Avi
Source: Science (pre-March 2025). 9/21/2012, Vol. 337 Issue 6101, p1511-1514. 4p.
Subjects: Astronomical observations, Space vehicles, Detection of extrasolar planets, Extrasolar planetary orbits, Astronomical transits, Binary stars
Abstract: We report the detection of Kepler-47, a system consisting of two planets orbiting around an eclipsing pair of stars. The inner and outer planets have radii 3.0 and 4.6 times that of Earth, respectively. The binary star consists of a Sun-like star and a companion roughly one-third its size, orbiting each other every 7.45 days. With an orbital period of 49.5 days, 18 transits of the inner planet have been observed, allowing a detailed characterization of its orbit and those of the stars. The outer planet's orbital period is 303.2 days, and although the planet is not Earth-like, it resides within the classical "habitable zone," where liquid water could exist on an Earth-like planet. With its two known planets, Kepler-47 establishes that close binary stars can host complete planetary systems. [ABSTRACT FROM AUTHOR]
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Database: Psychology and Behavioral Sciences Collection
Description
Abstract:We report the detection of Kepler-47, a system consisting of two planets orbiting around an eclipsing pair of stars. The inner and outer planets have radii 3.0 and 4.6 times that of Earth, respectively. The binary star consists of a Sun-like star and a companion roughly one-third its size, orbiting each other every 7.45 days. With an orbital period of 49.5 days, 18 transits of the inner planet have been observed, allowing a detailed characterization of its orbit and those of the stars. The outer planet's orbital period is 303.2 days, and although the planet is not Earth-like, it resides within the classical "habitable zone," where liquid water could exist on an Earth-like planet. With its two known planets, Kepler-47 establishes that close binary stars can host complete planetary systems. [ABSTRACT FROM AUTHOR]
ISSN:00368075
DOI:10.1126/science.1228380