The UMIST database for astrochemistry 1999

Details The UMIST database for astrochemistry 1999 The UMIST database for astrochemistry 1999

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26as..146..157l&link_type=abstract

Astronomy and Astrophysics Supplement, v.146, p.157-168

Astronomy and Astrophysics

Astrophysics

191

Molecular Data, Molecular Processes, Ism: Molecules, Circumstellar Matter

Scientific paper

We report a new version of the UMIST database for astrochemistry. The previous (1995) version has been updated and its format has been revised. The database contains the rate coefficients, temperature ranges and - where available - the temperature dependence of 4113 gas-phase reactions important in astrophysical environments. The data involve 396 species and 12 elements. We have also tabulated permanent electric dipole moments of the neutral species and heats of formation. A new table lists the photo process cross sections (ionisation, dissociation, fragmentation) for a few species for which these quantities have been measured. Data for Deuterium fractionation are given in a separate table. Finally, a new online Java applet for data extraction has been created and its use is explained in detail. The detailed new datafiles and associated software are available on the World Wide Web at http://www.rate99.co.uk. Table 8 is only available in electronic form at\hfill\break http://www.edpsciences.org and http://www.rate99.co.uk

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