Armstrong, David J., Pollacco, Don, Watson, C. A., Faedi, F., Gómez Maqueo Chew, Y., Cegla, H. M., McDaid, P., Burton, J., McCormac, J. J. and Skillen, I. (2012) A transiting companion to the eclipsing binary KIC002856960. Astronomy & Astrophysics, Volume 545 . Article number L4. doi:10.1051/0004-6361/201219479

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Abstract

We present an early result from an automated search of Kepler eclipsing binary systems for circumbinary companions. An intriguing tertiary signal has been discovered in the short period eclipsing binary KIC002856960. This third body leads to transit-like features in the light curve occurring every 204.2 days, while the two other components of the system display eclipses on a 6.2 h period. The variations due to the tertiary body last for a duration of ~1.26 days, or 4.9 binary orbital periods. During each crossing of the binary orbit with the tertiary body, multiple individual transits are observed as the close binary stars repeatedly move in and out of alignment with the tertiary object. We are at this stage unable to distinguish between a planetary companion to a close eclipsing binary, or a hierarchical triply eclipsing system of three stars. Both possibilities are explored, and the light curves presented.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Astronomy & Astrophysics
Publisher:	EDP Sciences
ISSN:	0004-6361
Official Date:	2012
Dates:	Date Event 2012 Published
Volume:	Volume 545
Number of Pages:	4
Page Range:	Article number L4
DOI:	10.1051/0004-6361/201219479
Status:	Peer Reviewed
Publication Status:	Published

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