Journal
SCIENCE
Volume 333, Issue 6049, Pages 1602-1606Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1210923
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Funding
- NASA's Science Mission Directorate
- NASA [NNX08AR15G, HF-51267.01-A, HF-51272.01-A, NAS 5-26555, NNX09AB33G]
- Space Telescope Science Institute
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1007992] Funding Source: National Science Foundation
- NASA [NNX08AR15G, 94407] Funding Source: Federal RePORTER
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We report the detection of a planet whose orbit surrounds a pair of low-mass stars. Data from the Kepler spacecraft reveal transits of the planet across both stars, in addition to the mutual eclipses of the stars, giving precise constraints on the absolute dimensions of all three bodies. The planet is comparable to Saturn in mass and size and is on a nearly circular 229-day orbit around its two parent stars. The eclipsing stars are 20 and 69% as massive as the Sun and have an eccentric 41-day orbit. The motions of all three bodies are confined to within 0.5 degrees of a single plane, suggesting that the planet formed within a circumbinary disk.
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