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Dynamical Modelling of AGB Star Atmospheres

Published online by Cambridge University Press:  25 May 2016

Susanne Höfner
Susanne Höfner*
Affiliation:
Niels Bohr Institute, Astronomical Observatory, Maries Vej 30, DK-2100 Copenhagen, Denmark

Abstract

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Time-dependent dynamics is an important ingredient for understanding the atmospheres of pulsating AGB stars. The shock waves created by stellar pulsation modify the atmospheric structure and, consequently, influence the mass loss and the observable properties. So far, hydrostatic model atmospheres have been used in most cases to analyse photospheric spectra, neglecting the effects of dynamics. The recent progress in observational techniques, however, has demonstrated the importance of consistent time-dependent models. The main topics of this contribution are to discuss fundamental physical processes and technical problems in constructing dynamical model atmospheres, to review the present status of modelling and to indicate possible future developments.

Type
Part 2. Pulsation, Mass Loss, Cool Envelopes
Information
Symposium - International Astronomical Union , Volume 191: Asymptotic Giant Branch Stars , 1999 , pp. 159 - 168
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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