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Kepler-16: a transiting circumbinary planet |
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| Authors: | Doyle Laurance R Carter Joshua A Fabrycky Daniel C Slawson Robert W Howell Steve B Winn Joshua N Orosz Jerome A Prša Andrej Welsh William F Quinn Samuel N Latham David Torres Guillermo Buchhave Lars A Marcy Geoffrey W Fortney Jonathan J Shporer Avi Ford Eric B Lissauer Jack J Ragozzine Darin Rucker Michael Batalha Natalie Jenkins Jon M Borucki William J Koch David Middour Christopher K Hall Jennifer R McCauliff Sean Fanelli Michael N Quintana Elisa V Holman Matthew J Caldwell Douglas A Still Martin Stefanik Robert P Brown Warren R Esquerdo Gilbert A Tang Sumin Furesz Gabor Geary John C |
| Institution: | Carl Sagan Center for the Study of Life in the Universe, SETI Institute, 189 Bernardo Avenue, Mountain View, CA 94043, USA. ldoyle@seti.org |
| Abstract: | 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° of a single plane, suggesting that the planet formed within a circumbinary disk. |
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