ARE THE ROTATIONAL AXES PERPENDICULAR TO THE ORBITAL PLANES IN THE BINARY-SYSTEMS .2. SYNCHRONOUS LONG-PERIOD RS CVN STARS

Inclinations of the rotational axes, i(rot), are determined for 37 syn chronous long-period RS CVn binaries by combining V-rot sin i(rot) mea surements with rotational period information. These inclinations are t hen compared with the orbital inclinations of the systems, i(orb), to test the alignment between the equatorial and orbital planes. Contrary to the asynchronous RS CVn systems (see Paper I), in all 37 cases i(r ot) is equal or nearly equal to i(orb), and the assumption about copla narity of their equatorial and orbital planes is justified.