Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...292..487j&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 292, May 15, 1985, p. 487-493. NASA-NSF-supported research.
Astronomy and Astrophysics
Astrophysics
101
Condensing, Interstellar Matter, Molecular Interactions, Red Giant Stars, Stellar Mass Ejection, Stellar Models, Chandrasekhar Equation, Ice, Silicon Oxides, Star Clusters, Stellar Evolution, Water Vapor
Scientific paper
In the outflows from red giants, grains are formed which are driven by radiation pressure. For the development of a model of the outflows, a detailed understanding of the interaction between the gas and dust is critical. The present investigation is concerned with condensation processes which occur after the grains nucleate near the stars. A physical process considered results from the cooling of the grains as they flow away from the star. Molecules which initially do not condense onto the grains can do so far from the star. It is shown that for some species this effect can be quite important in determining their gas-phase abundances in the outer circumstellar envelope. One of the major motivations of this investigation was provided by the desire to understand the physical conditions and molecular abundances in the outflows from the considered stars.
Jura Michael
Morris Marita
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