A Time-dependent Model for Synchronization in Close Binaries
Abstract
The three-dimensional motions in a tidally distorted binary component when the initial degree of nonsynchronism is small is studied. A boundary layer analysis is used to investigate the mechanism by which this large-scale transient flow tends to sychronize the axial motion of the gaseous body with its orbital motion. The formation of an Ekman-type suction layer is found to induce a large-scale flow of matter within the practically inviscid interior of the star. Detailed calculations show that this time-dependent advection of matter and angular momentum brings effective synchronization within a time that is much shorter than those associated with other mechanisms.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- August 1990
- DOI:
- 10.1086/169044
- Bibcode:
- 1990ApJ...359..155T
- Keywords:
-
- Binary Stars;
- Fluid Dynamics;
- Stellar Models;
- Stellar Rotation;
- Inviscid Flow;
- Synchronism;
- Astrophysics;
- HYDRODYNAMICS;
- STARS: BINARIES;
- STARS: INTERIORS;
- STARS: ROTATION