Query : 1998A&A...329..559L

1998A&A...329..559L - Astronomy and Astrophysics, volume 329, 559-570 (1998/1-2)

Fine mesh calculations of dwarf nova outbursts.


Abstract (from CDS):

We present new results from fine mesh calculations of dwarf nova outbursts. The vertical thermal and the radial viscous evolution of the accretion disk is followed simultaneously. This is essential for determining formation, structure, and propagation of transition fronts which are a fundamental constituent of the dwarf nova cycle. In addition to the equation of continuity of mass flow and the energy equation, we have solved the Navier-Stokes equations for the radial and the azimuthal velocity. This allows us to follow deviations of the azimuthal velocity from the Keplerian value.
Result. show, that these deviations are largest inside heating waves, but have only marginal influence on the outburst behavior. More important are the effects of lateral heat diffusion which cause an enlargement of the radial width of a heating wave. This leads to essential changes in the long-term evolution of the accretion disk. We compare our new results with earlier results (Ludwig et al., 1994A&A...290..473L), where we used the localized front approximation (Meyer, 1984A&A...132..143M) and with results of fine mesh calculations of Mineshige (1987Ap&SS.130..331M) and Cannizzo (1993ApJ...419..318C).

Abstract Copyright:

Journal keyword(s): accretion, accretion disk - cataclysmic variables - instabilities - stars: individual: VW Hydri

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
1 V* VW Hyi CV* 04 09 11.3967378648 -71 17 41.554528260   12.786 12.543 14.160   ?+L0:e 628 0
2 V* U Gem CV* 07 55 05.2324414746 +22 00 05.044127985   15.3 14.54     DA 1075 0
3 V* SS Cyg CV* 21 42 42.8034497592 +43 35 09.867842484 11.07 12.651 12.032 9.326   K5V 1251 1

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