Too little radiation pressure on dust in the winds of oxygen-rich AGB stars

2006/09/14 by Peter Woitke, P. Woitke · 6 citations
Physics and Astronomy · #Astro and Planetary Science #Astrophysics #Astrophysics and Star Formation Studies #Asymptotic giant branch #Circumstellar dust #Condensation #Nucleation #Opacity #Oxygen #Physics #Radiative transfer #Stars #Stellar, planetary, and galactic studies #Thermodynamics #astro-ph

paper · pdf · doi:10.1051/0004-6361:20066322

4 pages, 3 figures. accepted as A&A letter after minor revisions

arxiv created 2006/09/14 · openalex publication_date 2006/11/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Aims.It is commonly assumed that the massive winds of AGB stars are dust-driven and pulsation-enhanced. However, detailed frequency-dependent dynamical models that can explain the observed magnitudes of mass loss rates and outflow velocities have been published so far only for C-stars. This letter reports on first results of similar models for oxygen-rich AGB stars. The aim is to provide a better understanding of the wind driving mechanism, the dust condensation sequence, and the role of pulsations.

Citations

• FLASH: An Adaptive Mesh Hydrodynamics Code for Modeling Astrophysical Thermonuclear Flashes
• ISO mid-infrared spectroscopy of Galactic Bulge AGB stars

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• RUSTY OLD STARS: A SOURCE OF THE MISSING INTERSTELLAR IRON?
• The trigger of the asymptotic giant branch superwind: the importance of carbon