Title: Kepler eclipsing binary stars. iii. classification of kepler eclipsing binary light curves with locally linear embedding
Authors: Matijevic, Gal ×
Prsa, Andrej
Orosz, Jerome A
Welsh, William F
Bloemen, Steven
Barclay, Thomas #
Issue Date: May-2012
Publisher: Published by the University of Chicago Press for the American Astronomical Society
Series Title: The Astronomical Journal vol:143 issue:5 pages:-
Article number: 123
Abstract: We present an automated classification of 2165 Kepler eclipsing binary (EB) light curves that accompanied the second Kepler data release. The light curves are classified using locally linear embedding, a general nonlinear dimensionality reduction tool, into morphology types (detached, semi-detached, overcontact, ellipsoidal). The method, related to a more widely used principal component analysis, produces a lower-dimensional representation of the input data while preserving local geometry and, consequently, the similarity between neighboring data points. We use this property to reduce the dimensionality in a series of steps to a one-dimensional manifold and classify light curves with a single parameter that is a measure of "detachedness" of the system. This fully automated classification correlates well with the manual determination of morphology from the data release, and also efficiently highlights any misclassified objects. Once a lower-dimensional projection space is defined, the classification of additional light curves runs in a negligible time and the method can therefore be used as a fully automated classifier in pipeline structures. The classifier forms a tier of the Kepler EB pipeline that pre-processes light curves for the artificial intelligence based parameter estimator.
ISSN: 0004-6256
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

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