Desorption processes in molecular clouds - Quasi-steady-state chemistry

Details Desorption processes in molecular clouds - Quasi-steady-state chemistry Desorption processes in molecular clouds - Quasi-steady-state chemistry

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.260..635w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 260, no. 3, p. 635-642.

Astronomy and Astrophysics

Astronomy

55

Desorption, Interstellar Chemistry, Molecular Clouds, Astronomical Models, Cosmic Dust, Cosmic Rays

Scientific paper

The effects of mantle desorption due to cosmic rays on the chemistry of interstellar clouds are modelled. Two desorption mechanisms are considered - direct cosmic ray heating of dust grains and cosmic ray induced photodesorption. Their effects at densities typical of a molecular cloud and a dense core are investigated. It is found that both mechanisms have a significant effect on the gas-phase molecular abundances. The results for the molecular cloud case are compared with observations of TMC-1 and found to be in reasonable agreement.

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