Are the Rotational Axes Perpendicular to the Orbital Planes in the Binary Systems? II. Synchronous Long-Period RS CVn Stars

Details Are the Rotational Axes Perpendicular to the Orbital Planes in the Binary Systems? II. Synchronous Long-Period RS CVn Stars Are the Rotational Axes Perpendicular to the Orbital Planes in the Binary Systems? II. Synchronous Long-Period RS CVn Stars

Oct 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aca....44..393s&link_type=abstract

Acta Astronomica, v.44, pp.393-406, (1994).

Astronomy and Astrophysics

Astronomy

26

Stars: Rotation, Binaries: General, Stars: Late-Type

Scientific paper

Inclinations of the rotational axes, irot, are determined for 37 synchronous long-period RS CVn binaries by combining v sin i measurements with rotational period information. These inclinations are then compared with the orbital inclinations of the systems, iorb, to test the alignment between the equatorial and orbital planes. Contrary to the asynchronous RS CVn systems (see Paper I), in all 37 cases irot is equal or nearly equal to iorb, and the assumption about coplanarity of their equatorial and orbital planes is justified.

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