1998•Astronomical and Astrophysical TransactionsRequires access
Subgiant luminosity excesses in eclipsing binary systems
V. G. Karetnikov
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Abstract
It has been shown that radius and temperature excesses are largest for subgiant stars in DS systems and low-mass and long-period SD systems, and smallest for subgiant stars in AR systems and lowmass and short-period SD systems. Subgiant stars in AR and more massive SD systems exhibit temperature deficiencies which are largest for the primaries of the AR systems. It is necessary to divide the class of SD systems into groups according to mass and orbital period while studying their properties.