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1999A&A...341L..23M - Astronomy and Astrophysics, volume 341, L23-26 (1999/1-2)
On the source of viscosity in cool binary accretion disks.
MEYER F. and MEYER-HOFMEISTER E.
Abstract (from CDS):
We suggest that the low viscosity in close binary accretion disks during quiescence is due to magnetic fields from the companion star. In very late evolutionary phase the companion stars become brown dwarfs and have cooled down to such low a temperature that this process cannot work anymore. The extremely low viscosity in WZ Sge stars supports this connection between companion stars and viscosity. We further suggest that magnetic activity in such very cool stars is cut off by their poor electric conductivity.
Abstract Copyright: ∼
Journal keyword(s): Accretion, accretion disks - stars: binaries: symbiotic - stars: low-mass, brown dwarfs - stars: magnetic fields - stars: individual: WZ Sge
Simbad objects: 14
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