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Through the AGB towards a Planetary: A hydrodynamical simulation

Published online by Cambridge University Press:  25 May 2016

M. Steffen
Affiliation:
Astrophysikalisches Institut Potsdam, Potsdam, Germany
D. Schönberner
Affiliation:
Astrophysikalisches Institut Potsdam, Potsdam, Germany
K. Kifonidis
Affiliation:
Astrophysikalisches Institut Potsdam, Potsdam, Germany
J. Stahlberg
Affiliation:
Astrophysikalisches Institut Potsdam, Potsdam, Germany

Extract

Based on the mass-loss description developed by Blöcker (1995, A&A, 297, 727), we present first exploratory computations of the dynamical evolution of a dusty stellar wind envelope around an intermediate mass star during the last 300 000 years on the AGB and its transformation into a planetary nebula during the following 5 000 years of post-AGB evolution. To model the dynamics of the cool dusty envelope, we used a two-component (gas/dust) 1D radiation hydrodynamics code which computes the radiation pressure on dust grains and the structure of the envelope in a self-consistent way, including the variable frictional coupling between dust and gas. The grains are either carbon or oxygen based and of single size and spherical shape.

Type
V. From AGB to Planetary Nebulae
Copyright
Copyright © Kluwer 1997 
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