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GAS-PHASE REACTIONS AND RATE COEFFICIENTS FOR USE IN ASTROCHEMISTRY - THE UMIST RATEFILE

MILLAR, TJ; RAWLINGS, JMC; BENNETT, A; BROWN, PD; CHARNLEY, SB; (1991) GAS-PHASE REACTIONS AND RATE COEFFICIENTS FOR USE IN ASTROCHEMISTRY - THE UMIST RATEFILE. ASTRON ASTROPHYS SUP , 87 (3) 585 - 619.

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Abstract

We present the rate coefficients of 2880 gas-phase reactions among 313 species involving 12 elements for use in astrochemical models. We describe the motivation behind this work and the caveats which attach to the data in general as well as to specific reactions. We give the permanent electric dipole moments of nearly all the 112 neutral molecules contained in the data set, so that rate coefficients can be calculated at the low temperatures of dark interstellar dust clouds. We have used the data to calculate the pseudo-time-dependent chemical evolution of a dark, dense interstellar cloud and present both early time and steady-state abundances for all 313 species.

Type:Article
Title:GAS-PHASE REACTIONS AND RATE COEFFICIENTS FOR USE IN ASTROCHEMISTRY - THE UMIST RATEFILE
Keywords:INTERSTELLAR MEDIUM, MOLECULES, CHEMICAL REACTIONS, ATOMIC AND MOLECULAR PROCESSES, DENSE INTERSTELLAR CLOUDS, DISSOCIATIVE RECOMBINATION COEFFICIENTS, ASSOCIATION RATE COEFFICIENTS, ION-MOLECULE REACTIONS, RADIATIVE ASSOCIATION, TRANSITION-PROBABILITIES, ABINITIO CALCULATIONS, NEUTRAL REACTIONS, SULFUR CHEMISTRY, LOW-TEMPERATURES
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Physics and Astronomy

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