Kepler Eclipsing Binary Stars. II. 2165 Eclipsing Binaries in the Second Data Release

Details Kepler Eclipsing Binary Stars. II. 2165 Eclipsing Binaries in the Second Data Release Kepler Eclipsing Binary Stars. II. 2165 Eclipsing Binaries in the Second Data Release

2011-03-08

arxiv.org/abs/1103.1659v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

29 pages, 12 figures. Submitted to the AJ. An online version of the catalog is maintained at http://keplerEBs.villanova.edu/

Scientific paper

The Kepler Mission provides nearly continuous monitoring of ~156 000 objects with unprecedented photometric precision. Coincident with the first data release, we presented a catalog of 1879 eclipsing binary systems identified within the 115 square degree Kepler FOV. Here, we provide an updated catalog augmented with the second Kepler data release which increases the baseline nearly 4-fold to 125 days. 386 new systems have been added, ephemerides and principle parameters have been recomputed. We have removed 42 previously cataloged systems that are now clearly recognized as short-period pulsating variables and another 58 blended systems where we have determined that the Kepler target object is not itself the eclipsing binary. A number of interesting objects are identified. We present several exemplary cases: 4 EBs that exhibit extra (tertiary) eclipse events; and 8 systems that show clear eclipse timing variations indicative of the presence of additional bodies bound in the system. We have updated the period and galactic latitude distribution diagrams. With these changes, the total number of identified eclipsing binary systems in the Kepler field-of-view has increased to 2165, 1.4% of the Kepler target stars.

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