Publication details

Hydrodynamics of Outer Parts of Viscous Decretion Disks of Critically Rotating Stars



Year of publication 2012
Type Article in Proceedings
Conference Circumstellar Dynamics at High Resolution
MU Faculty or unit

Faculty of Science

Field Astronomy and astrophysics
Keywords star decretion disk fast rotation
Description Direct centrifugal ejection of matter from a near-critically rotating equatorial surface of hot stars leads to the outflowing viscous decretion disk formation. The mass and angular momentum loss via such disks can significantly influence the evolution of rapidly rotating stars. The viscosity plays a key role in the outward angular momentum transport as well as in the disk thermal energy generation. We study the dynamics of the outer parts of outflowing viscous disks, which is important for the stellar angular momentum loss. We conclude that the outer disk structure is determined by the spatial variations of the disk temperature and alpha viscosity parameter.
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