Abstract
Abstract Implications of the displacement of a sonic point due to the presence of a companion in a binary system for the properties of anisotropic stellar wind are studied for adiabatically expanding stellar wind. A mass flux tube is introduced for the evaporative wind and examined for characteristic temperatures of gas in the framework of the Roche model. Accretion radii values are tabulated for different values of the mass ratio and the ratio of the local sonic velocity to the escape velocity of gas. An explicit upper limit estimate T 0 of gas temperature is introduced such that for T less than T 0 conditions for transonic flow are fulfilled. The effect of optically thin anisotropic wind upon the light curves of eclipsing variables is quantitatively evaluated.
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