The UMIST database for astrochemistry 1999

Y.H. Le Teuff, TJ Millar, A.J. Markwick

Research output: Contribution to journalArticlepeer-review

287 Citations (Scopus)


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
Original languageEnglish
Pages (from-to)157-168
Number of pages12
JournalAstronomy and Astrophysics Supplement Series
Issue number1
Publication statusPublished - 01 Oct 2000

ASJC Scopus subject areas

  • General Physics and Astronomy


Dive into the research topics of 'The UMIST database for astrochemistry 1999'. Together they form a unique fingerprint.

Cite this