Comprehensive list of semi-detached double-lined eclipsing binaries with Gaia DR2 data

Abstract

Semi-detached eclipsing systems play an important role in our understanding of stellar properties. In the present study, we have cross-matched a previously compiled comprehensive list of SD double-lined eclipsing binaries, containing 119 systems, with Gaia DR2, and analyze the result. A special analysis is conducted for systems with controversial data on parallaxes. It is shown that Gaia DR2 effective temperatures should be used with caution, as they do not describe hot SD systems well. We have also compiled an empirical relation between the temperature of the accretor and the donor.