Model Atmospheres of AGB Stars: Dynamics, Molecules and Dust |
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| Authors: | Susanne Höfner Uffe G Jφrgensen Rita Loidl |
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| Institution: | 1. Niels Bohr Institute, University Observatory, Juliane Maries Vej 30, DK-2100, Copenhagen, Denmark
2. Institut für Astronomie, Universit?t Wien, Türkenschanzstr. 17, A-1180, Vienna, Austria
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| Abstract: | The atmospheres and circumstellar envelopes of AGB stars are characterized by complex physical phenomena like shock waves
caused by stellar pulsation or formation of molecules and dust which often lead to a heavy mass loss and have a strong influence
on IR properties as observed by ISO. To allow a physical interpretation of various observations we have constructed improved
dynamical model atmospheres of long-period variables. In this contribution we mainly investigate the dependence of the atmospheric
structure and its variability on stellar pulsation, molecular opacities and time-dependent dust formation. IR spectra resulting
from our models are discussed in detail by Loidl et al. (1997b) and compared to ISO-SWS spectra obtained by Hron et al. (1997).
This revised version was published online in August 2006 with corrections to the Cover Date. |
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