The role of dust in mass loss from late-type stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Cosmic Dust, Late Stars, Red Giant Stars, Stellar Mass Ejection, Chromosphere, Grains, Hertzsprung-Russell Diagram, M Stars, Radiation Pressure

Scientific paper

It is noted that, in almost all late-type stars with measured mass loss rates, there is sufficient momentum in the radiation to dominate the dynamics. The opacity of the material is sufficiently great to render radiation pressure important; the dust forms close enough to the central star for radiation pressure to account for the observed outflow velocities. Pulsations appear to be important in raising the material far enough above the photosphere for grains to condense.

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