Apsidal Motion in Binaries: Rotation of the Components

Details Apsidal Motion in Binaries: Rotation of the Components Apsidal Motion in Binaries: Rotation of the Components

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ap.....46..329p&link_type=abstract

Astrophysics (English translation of Astrofizika), v. 46, Issue 3, p. 329-340 (2003).

Astronomy and Astrophysics

Astrophysics

2

Stars - Stars Binaries - Stars Rotation

Scientific paper

A sample of 51 separated binary systems with measured apsidal periods and rotational velocities of the components is examined. The ranges of the angles of inclination of the equatorial planes of the components to the orbital plane are estimated for these systems. The observed apsidal velocities can be explained by assuming that the axes of rotation of the stars are nonorthogonal to the orbital plane in roughly 47% of the systems (24 of the 51) and the rotation of the components is not synchronized with the orbital motion in roughly 59% of the systems (30 of 51). Nonorthogonality and nonsynchrony are defined as deviations from 90° and a synchronized angular velocity, respectively, at levels of 1 or more.

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