2000•Astronomy ReportsOpen access

Nonconservative evolution of cataclysmic binaries

A. V. Fedorovа, Д. В. Бисикало, Aleksandr A. Boyarchuk, O. A. Kuznetsov, Aleksandr V. Tutukov, Lev R. Yungelson

Abstract

We present a mechanism to take into account angular-momentum loss in binary systems with non-conservative mass transfer. In a number of cases, mass loss in the system can increase the orbital angular momentum of the stars. Including this mechanism in evolutionary models substantially expands the domain of stable mass transfer in binary systems. All observed cataclysmic binaries with known component masses fall within the calculated area for stable mass transfer.

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Key concepts: Physics, Angular momentum, Binary number, Astrophysics, Binary star, Mass transfer, Cataclysmic variable star, Binary system