Non-conservative Evolution of Cataclysmic Variables

A.A.Boyarchuk (1); A.V.Fedorova (1); A.V.Tutukov (1); D.V.Bisikalo (1); L.R.Yungelson (1) ((1) Institute of Astronomy of the Russian Acad. of Sci.; Moscow); Moscow; (2) Keldysh Institute of Applied Mathematics; O.A.Kuznetsov (2)

arxiv: astro-ph/0003452 · v1 · submitted 2000-03-30 · 🌌 astro-ph

Non-conservative Evolution of Cataclysmic Variables

A.V.Fedorova (1) , D.V.Bisikalo (1) , A.A.Boyarchuk (1) , O.A.Kuznetsov (2) , A.V.Tutukov (1) , L.R.Yungelson (1) ((1) Institute of Astronomy of the Russian Acad. of Sci. , Moscow; (2) Keldysh Institute of Applied Mathematics , Moscow) This is my paper

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keywords massbinariesangularcataclysmicevolutionexchangelossmechanism

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We suggest a new mechanism to account for the loss of angular momentum in binaries with non-conservative mass exchange. It is shown that in some cases the loss of matter can result in increase of the orbital angular momentum of a binary. If included into consideration in evolutionary calculations, this mechanism appreciably extends the range of mass ratios of components for which mass exchange in binaries is stable. It becomes possible to explain the existence of some observed cataclysmic binaries with high donor/accretor mass ratio, which was prohibited in conservative evolution models.

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Non-conservative Evolution of Cataclysmic Variables

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