1999A&A...341L..23M

Query : 1999A&A...341L..23M

1999A&A...341L..23M - Astronomy and Astrophysics, volume 341L23-26 (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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Number of rows : 14
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* WX Cet CV* 01 17 04.1794193856 -17 56 22.414606224           ~ 173 0
2 V* TY Psc CV* 01 25 39.3569919912 +32 23 08.895723252           ~ 122 0
3 V* PU Per CV* 02 42 16.15 +35 40 47.2           ~ 26 0
4 V* IR Gem CV* 06 47 34.6827027456 +28 06 22.332682152           ~ 147 0
5 V* SW UMa CV* 08 36 42.7492998204 +53 28 37.976599017           ~ 315 0
6 V* EG Cnc CV* 08 43 03.9863206560 +27 51 49.693595508           DAe 195 0
7 V* OY Car CV* 10 06 22.0793274312 -70 14 04.584660540           ~ 586 0
8 V* CI UMa CV* 10 18 12.9917560056 +71 55 43.290676632   19.1   19.4 14.42 ~ 47 0
9 V* CY UMa CV* 10 56 56.9964835104 +49 41 18.201049512   17.0       ~ 111 1
10 V* V436 Cen CV* 11 14 00.0568720872 -37 40 47.763655572           ~ 148 0
11 V* AL Com CV* 12 32 25.7951754648 +14 20 42.292188276     16.2     ~ 249 0
12 V* EK TrA CV* 15 14 01.3761801610 -65 05 32.305864520           ~ 128 0
13 V* RZ Sge CV* 20 03 18.47616 +17 02 51.9432   17.6   17.2   ~ 89 0
14 V* WZ Sge CV* 20 07 36.5037622512 +17 42 14.733254952   15.30 15.20 10.817   D 982 0

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