Statistical investigation of chemically pecular stars. V. Spectroscopic binary stars.

The observable parameters of orbits for 83 spectroscopic binary stars with chemically peculiar components are reported. Distribution functions of the principal parameters are found. A comparison with a control sample of a normal spectroscopic binary star showed that distribution of Ap stars in periods, eccentricities and amplitudes of radial velocities differ from those of normal stars. Physical characteristics of stars, inclination angles of orbital planes to the line of sight, absolute sizes of orbits, the sizes of Roche lobes and angular orbital moments are estimated. It is found that the inclination angles of rotation axes of Ap components and those of their orbits do not correlate with each other. For 4 systems a motion of line of apsides with velocities of (3 - 70)E-4 grad/day is suspected.