The influence of the nonsphericity and of the radiation pressure force on the moment of inertia of a rigidly rotating star and on the stability criterion for binaries.
Abstract
Summary. It is shown that the moment of inertia of a star deformed by rotation and/or the attraction of the other star in a binary system differs no more than 65% from that of a spherical star of similar mass distribution. Taking into account the influence of the radiation pressure force, this difference decreases with increasing force. The influence of the deformation and of the radiation pressure force on the stability criterion for binaries without mass loss is considered. Key words: moment of inertia  radiation pressure force  level surface  binary  radius of gyration
 Publication:

Astronomy and Astrophysics
 Pub Date:
 January 1978
 Bibcode:
 1978A&A....62...59V
 Keywords:

 Binary Stars;
 Moments Of Inertia;
 Radiation Pressure;
 Stellar Evolution;
 Stellar Rotation;
 Angular Momentum;
 Angular Velocity;
 Gravitational Effects;
 Mass Transfer;
 Pressure Effects;
 Radiation Effects;
 Astrophysics;
 Close Binaries:Stability