Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2011-06-22
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
Submitted to MNRAS Letters. Additional tables with eclipse times are included here. The Kepler data that was used for the anal
Scientific paper
We present a hierarchical triple star system (KIC 9140402) where a low mass eclipsing binary orbits a more massive third star. The orbital period of the binary (4.98829 Days) is determined by the eclipse times seen in photometry from NASA's Kepler spacecraft. The periodically changing tidal field, due to the eccentric orbit of the binary about the tertiary, causes a change in the orbital period of the binary. The resulting eclipse timing variations provide insight into the dynamics and architecture of this system and allow the inference of the total mass of the binary ($0.424 \pm 0.017 \text{M}_\odot$) and the orbital parameters of the binary about the central star.
Borucki William. J.
Brugamyer Erik
Bryson Steve T.
Buchhave Lars A.
Cochran William D.
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