Eclipsing Binary Stars in the OGLE-III Galactic Disk Fields
Abstract
We present the analysis of 11 589 eclipsing binary stars identified in twenty-one OGLE-III Galactic disk fields toward constellations of Carina, Centaurus, and Musca. All eclipsing binaries but 402 objects are new discoveries. The binaries have out-of-eclipse brightness between I=12.5 mag and I=21 mag. The completeness of the catalog is estimated at a level of about 75%. Comparison of the orbital period distribution for the OGLE-III disk binaries with systems detected in other recent large-scale Galactic surveys shows the maximum around 0.40 d and an almost flat distribution between 0.5 d and 2.5 d, indepedent of population. Ten doubly eclipsing systems and one eclipsing-ellipsoidal object were found among thousands of variables. Nine of them are candidates for quadruple systems. We also identify ten eclipsing subdwarf-B type binary stars and numerous eclipsing RS CVn type variables. All objects reported in this paper are part of the OGLE-III Catalog of Variable Stars.
Cite
@article{arxiv.1306.6324,
title = {Eclipsing Binary Stars in the OGLE-III Galactic Disk Fields},
author = {P. Pietrukowicz and P. Mroz and I. Soszynski and A. Udalski and R. Poleski and M. K. Szymanski and M. Kubiak and G. Pietrzynski and L. Wyrzykowski and K. Ulaczyk and S. Kozlowski and J. Skowron},
journal= {arXiv preprint arXiv:1306.6324},
year = {2013}
}
Comments
18 pages, 13 figures, published in Acta Astronomica