ИСТИНА

A synthesis model of an eclipsing binary system including one component with strong stellar wind (usually a Wolf-Rayet star) is presented. The components geometry is defined by the Roche model, one component loses material through stellar wind. In our model the wind is assumed to be smooth and homogeneous, the main absorption agent in the optical continuum is electron scattering. The electron density of the wind is defined by the mass loss rate, the velocity law (e.g., the commonly used beta-law), the chemical abundance of the wind material and its ionization stage. We present the results of numerical simulations which show that the shape of the light curve (and in particularly the width of the minima) strongly depends on the wind parameters. These simulations show that accounting for the absorption in the expanding wind is crucial in modeling light curves of binaries including WR stars and obtaining the parameters of the components.