Reducing and Analyzing Chemical Networks

Details Reducing and Analyzing Chemical Networks Reducing and Analyzing Chemical Networks

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cokon.103...59s&link_type=abstract

Communications of the Konkoly Observatory, Hungary Proceedings of the conference: 'The interaction of stars with their environme

Astronomy and Astrophysics

Astronomy

Scientific paper

A new efficient method allowing the reduction of the number of species and reactions in chemical networks is outlined. We applied it to the UMIST 95 astrochemical database in order to find a subset of species and reactions governing the evolution of carbon monoxide under conditions, typical of dense molecular clouds. We succeeded in isolation of such a tiny set for the pure gas-phase chemistry which gives the reliable estimation of the CO abundances under a wide range of the gas temperatures, densities, and visual extinctions. We showed that the reduction is only modest when gas-grain interactions and surface reactions are taken into account.

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