Systematic Difference between Eclipsing Binary Stars in Star Clusters and in Galactic Field Revealed with Gaia DR3 Data

The recent Gaia DR3 all-sky list of candidates for eclipsing binaries including 2,184,477 sources, and the list of probable members of galactic clusters by Hunt & Reffert (2024), are used to identify eclipsing binary stars members of star clusters, and to compare their general characteristics to those of eclipsing binaries in the galactic field. We find that the distributions over orbital frequencies notably differ from each other due to dynamic evolution of binary star orbits in galactic clusters. On the other hand, the distributions over the depth ratio of minima in clusters and in galactic field are similar, which supports the universality of pairing algorithm during binary star formation.