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- W2055429671 abstract "Three-dimensional hydrodynamic calculations are performed in order to investigate mass transfer in a close binary system, in which one component undergoes mass loss through a wind. The mass ratio is assumed to be unity. The radius of the mass-losing star is taken to be about a quarter of the separation between the two stars. Calculations are performed for gases with a ratio of specific heats γ = 1.01 and 5/3. Mass loss is assumed to be thermally driven so that the other parameter is the sound speed of the gas on the mass-losing star. Here, we focus our attention on two features: flow patterns and mass accretion ratio, which we define as the ratio of the mass accretion rate onto the companion, u Macc, to the mass loss rate from the mass-losing primary star, u Mloss. We characterize the flow by the mean normal velocity of the wind on the critical Roche surface of the mass-losing star, VR .W henVR 0.7 AΩ we observe wind accretion. We find very complex flow patterns in between these two extreme cases. We derive an empirical formula of the mass accretion ratio as 0.18 × 10 −0.75VR /AΩ in the low velocity regime and 0.05 (VR/AΩ) −4 in the high velocity regime." @default.
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- W2055429671 date "2004-05-01" @default.
- W2055429671 modified "2023-10-03" @default.
- W2055429671 title "Wind accretion in binary stars I. Mass accretion ratio" @default.
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