Time dependent modelling of mass loss on the AGB

Details Time dependent modelling of mass loss on the AGB Time dependent modelling of mass loss on the AGB

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003assl..283...99s&link_type=abstract

In: Mass-losing pulsating stars and their circumstellar matter. Workshop, May 13-16, 2002, Sendai, Japan, edited by Y. Nakada, M

Astronomy and Astrophysics

Astrophysics

Agb Stars: Mass Loss

Scientific paper

Previous numerical hydrodynamics calculations (Simis et al. 2001) indicated that the concentric shells around post-AGB objects and Planetary Nebulae may form due to an instability in the AGB wind. In this presentation I show the results of a series of calculations for various stellar parameters (T*, L*) that should enable to determine when this instability takes place. Also, I present first results of calculations that follow the outflow on a timescale longer than that of the mass loss modulation (which is typically of the order of a hundred years). This enables to study the effect of stellar evolution on the wind.

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