PECULIARITIES OF SHOCK-WAVE RADIATIVE COO LING IN CLOSE BINARY-SYSTEMS WITH WR AND OB STARS

The radiative cooling of the gas behind a shock wave is considered. Th e following processes are taken into account: bremsstrahlung, excitati on of the iron ions, and the inverse Compton scattering of stellar emi ssion on the hot electrons. The problem has been solved in the frame o f the two-temperature model accounting for the nonstationary ionizatio n processes. The typical parameters of close binary systems consisting of WR- and OB-type strongly outflowing components were chosen as the initial and boundary conditions. The results of the calculations showe d that the cooling process has some properties within the velocity ran g, in consideration. These properties allow the equation system to be simplified essentially. All the results are supported by the physical arguments based on simple estimates.