Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...152..130d&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 152, no. 1, Nov. 1985, p. 130-150.
Astronomy and Astrophysics
Astrophysics
221
Gas-Solid Interactions, Interstellar Chemistry, Interstellar Matter, Molecular Clouds, Abundance, Infrared Spectroscopy, Solid Phases, Surface Reactions, Time Dependence, Vapor Phases
Scientific paper
The authors have developed a model which examines the continuous interaction between grain surface processes with an ion-molecule gas phase chemistry scheme. Considering only a limited but realistic grain surface scheme including accretion, surface migration, reactions and ejection, it has been possible to follow the effects of accretion of gas phase species on grain mantle evolution. Reaction driven ejection of molecules from the mantles back to the gas phase is described. The ejected molecules modify the gas phase abundances and also participate in the gas chemistry for which 551 individual reactions involving 73 chemical species are computed time dependently.
Allamandola Louis J.
D'Hendecourt L. B.
Greenberg Mayo J.
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