Isochronal ages of eccentric orbit eclipsing binary stars

Isochrones are defined as the locus of equal age points on the evolutionary tracks of stars of different masses in the Hertzsprung-Russell diagram. Isochrone fitting technique uses for measuring the ages of star clusters, and galaxies. In addition to isochrone fitting technique uses for binaries assumption that binary stars born at the same time in a burst of star formation activity, with the same initial chemical composition.In this thesis, isochrone fitting technique has been applied to eccentric orbit eclipsing binaries. We choosed Y2 isochrones for measuring the ages of eccentric orbit binaries. Significant features of Y2 isochrones covers a wide range in metallicity and age and the stellar models start their evolution from the pre-main-sequence birthline instead of from the zero-age. In this situation useful for youthful systems, such as young open clusters.The absolute parameters (masses, radii, effective temperatures, etc.) and orbital parameters (eccentricity, orbital period, etc.) data has been collected from the Eccentric Orbit Binary Catalogue work of Bulut ve Demircan (2007). Isochrone fitting technique has been applied 32 systems and their isochron ages and evolutionary status were determined. These ages compareted literatüre ages.