The orbital and physical parameters of the eclipsing binary OW Gemiorum
C. Ga{\l}an (1), M. Miko{\l}ajewski (1), T. Tomov (1), D. Kolev (2),, D. Graczyk (1), A. Majcher (1, 3), J. {\L}. Janowski (1), M. Cika{\l}a (1, and 4) ((1) Uniwersytet Miko{\l}aja Kopernika, Centrum Astronomii, Toru\'n,, Polska, (2) National Astronomical Observatory Rozhen
TL;DR
This study combines multicolour photometry and radial-velocity data to determine detailed orbital and physical parameters of the eclipsing binary OW Gem, improving previous estimates of its eccentricity and periastron argument.
Contribution
It provides a comprehensive analysis of OW Gem using combined photometric and spectroscopic data with the Wilson-Devinney code, yielding refined orbital and physical parameters.
Findings
Eccentricity e=0.5286 determined
Argument of periastron omega=140.73 degrees
Improved consistency with observed secondary minimum
Abstract
We present our multicolour photometric data of the primary and secondary eclipses of OW Gem that took place in 1995, 2002, and 2006, as well as the new radial-velocity data collected since 1993 by R. F. Griffin and A. Duquennoy. The Wilson-Devinney code was used for the simultaneous solution of both photometric and spectroscopic data. A complete set of orbital and physical parameters of the components was obtained. The pair of values, eccentricity e=0.5286 and argument of periastron omega=140.73 degree, give better compatibility of the moment of the secondary minimum with the observations compared to previous estimates.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astro and Planetary Science · Astrophysics and Star Formation Studies