Meridional circulation in the surface layers of rotating stars.
Abstract
The influence of selfinertia on the meridional circulation in the radiative envelopes of rotating earlytype stars is examined. It is found that the inertia of the circulation becomes important in a shallow subsurface boundary layer having a relative depth determined by the approximate ratio of centrifugal to gravitational force, and by the ratio of the freefall time to the KelvinHelmholtz contraction time. The structure equations appropriate to the boundary layer are derived using stretched variable techniques, and qualitative features of the flow discussed. There is found to be minimal deviation from the Von Zeipel gravity darkening law through the boundary layer for all rotation speeds.
 Publication:

Astronomy and Astrophysics
 Pub Date:
 December 1977
 Bibcode:
 1977A&A....61..747S
 Keywords:

 Early Stars;
 Meridional Flow;
 Stellar Envelopes;
 Stellar Rotation;
 Surface Layers;
 Angular Velocity;
 Astrophysics;
 Boundary Layers;
 Inertia;
 Partial Differential Equations;
 Astrophysics