Synthesis of complex molecules in dense interstellar clouds via gas-phase chemistry - Model update and sensitivity analysis

Details Synthesis of complex molecules in dense interstellar clouds via gas-phase chemistry - Model update and sensitivity analysis Synthesis of complex molecules in dense interstellar clouds via gas-phase chemistry - Model update and sensitivity analysis

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.222..689h&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 222, Oct. 15, 1986, p. 689-711.

Astronomy and Astrophysics

Astronomy

121

Interstellar Chemistry, Interstellar Matter, Molecular Clouds, Reaction Kinetics, Abundance, Astronomical Models, Interstellar Extinction

Scientific paper

In an effort to update the work of Leung, Herbst & Huebner (1984), a series of pseudo time-dependent model calculations of the gas-phase chemistry of dense interstellar clouds has been performed. In these calculations a revised list of 1958 reactions has been used which involves 206 species and includes a representative sample of complex molecules. The cloud chemistry has been studied as a function of visual extinction, cloud temperature, and carbon-to-oxygen abundance ratio. The changes in the calculated abundances of complex molecules under different physical conditions are emphasized. It is shown that these species can be synthesized under a variety of physical conditions. It is also shown that complex molecule development does not occur appreciably in the gas phase in interstellar clouds that are of low density (2×103cm-3) and of low visual extinction (AV = 2).

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