Modeling colliding winds in the Wolf-Rayet WC8 + O8-9 binary CV Ser

I.I.Antokhin[1], G.M.Hill[2], A.F.J.Moffat[3]

[1] Sternberg Astronomical Institute, Russia
[2] McDonald Observatory, USA
[3] Departement de physique, Universite de Montreal, Canada

The variable peaks on the flat-topped CIII lambda5696Å line of the WC star in the CV Ser binary system are interpreted in a hypothesis that the extra emission arises in a colliding wind region. Modeling the peaks yields the orbit inclination and important parameters of the wind--wind interaction in the binary.