Estimating mass-loss rate in low-mass, evolved eclipsing binaries

Oliwia Ziółkowska, Ksenia Suchomska, Cezary Gałan and Radosław Smolec

We use PARSECc isochrones to determine evolutionary stages of low-mass eclipsing binaries in the Galactic Bulge. For each system, we look for an isochrone that best fits both components in the parameter space of temperature, luminosity, and mass. Without mass loss, models predict almost equal masses of the stars at the
stages after the main sequence. A moderate rate of mass loss must be included in the evolution to reproduce the position of components in the mass-temperature and mass-luminosity diagrams. The larger the mass ratio of the system, the higher the mass-loss rate is needed.

Proceedings of the Polish Astronomical Society, vol. 12, 213-215 (2022)

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