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Kepler Eclipsing Binary Stars. Viii. Identification Of False Positive Eclipsing Binaries And Re-extraction Of New Light Curves

Abdul-Masih, Michael; Prša, Andrej; Conroy, Kyle; Bloemen, Steven; Boyajian, Tabetha; Doyle, Laurance R.; Johnston, Cole; Kostov, Veselin; Latham, David W.; Matijevič, Gal; Shporer, Avi; Southworth, John

Kepler Eclipsing Binary Stars. Viii. Identification Of False Positive Eclipsing Binaries And Re-extraction Of New Light Curves Thumbnail


Authors

Michael Abdul-Masih

Andrej Prša

Kyle Conroy

Steven Bloemen

Tabetha Boyajian

Laurance R. Doyle

Cole Johnston

Veselin Kostov

David W. Latham

Gal Matijevič

Avi Shporer



Abstract

The Kepler mission has provided unprecedented, nearly continuous photometric data of ~200,000 objects in the ~105 deg2 field of view (FOV) from the beginning of science operations in May of 2009 until the loss of the second reaction wheel in May of 2013. The Kepler Eclipsing Binary Catalog contains information including but not limited to ephemerides, stellar parameters, and analytical approximation fits for every known eclipsing binary system in the Kepler FOV. Using target pixel level data collected from Kepler in conjunction with the Kepler Eclipsing Binary Catalog, we identify false positives among eclipsing binaries, i.e., targets that are not eclipsing binaries themselves, but are instead contaminated by eclipsing binary sources nearby on the sky and show eclipsing binary signatures in their light curves. We present methods for identifying these false positives and for extracting new light curves for the true source of the observed binary signal. For each source, we extract three separate light curves for each quarter of available data by optimizing the signal-to-noise ratio, the relative percent eclipse depth, and the flux eclipse depth. We present 289 new eclipsing binaries in the Kepler FOV that were not targets for observation, and these have been added to the catalog.

Journal Article Type Article
Acceptance Date Feb 9, 2016
Online Publication Date Mar 28, 2016
Publication Date Mar 28, 2016
Journal Astronomical Journal
Print ISSN 0004-6256
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 151
Issue 4
Article Number 101
DOI https://doi.org/10.3847/0004-6256/151/4/101
Keywords binaries, eclipsing, catalogs, methods, analytical, data analysis, statistical, techniques, photometric
Publisher URL https://iopscience.iop.org/article/10.3847/0004-6256/151/4/101

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