A detection metric designed for O’Connell effect eclipsing binaries

Springer Science and Business Media LLC - Tập 6 - Trang 1-15 - 2019
Kyle B. Johnston1,2, Rana Haber3, Saida M. Caballero-Nieves1, Adrian M. Peter4, Véronique Petit5, Matt Knote1
1Aerospace, Physics and Space Sciences Department, Florida Institute of Technology, Melbourne, USA
2Defense Group Melbourne, Perspecta Inc., Melbourne, USA
3Mathematical Sciences Department, Florida Institute of Technology, Melbourne, USA
4Computer Engineering and Sciences Department, Florida Institute of Technology, Melbourne, USA
5Physics and Astronomy Department, University of Delaware, Newark, USA

Tóm tắt

We present the construction of a novel time-domain signature extraction methodology and the development of a supporting supervised pattern detection algorithm. We focus on the targeted identification of eclipsing binaries that demonstrate a feature known as the O’Connell effect. Our proposed methodology maps stellar variable observations to a new representation known as distribution fields (DFs). Given this novel representation, we develop a metric learning technique directly on the DF space that is capable of specifically identifying our stars of interest. The metric is tuned on a set of labeled eclipsing binary data from the Kepler survey, targeting particular systems exhibiting the O’Connell effect. The result is a conservative selection of 124 potential targets of interest out of the Villanova Eclipsing Binary Catalog. Our framework demonstrates favorable performance on Kepler eclipsing binary data, taking a crucial step in preparing the way for large-scale data volumes from next-generation telescopes such as LSST and SKA.

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