EDP Sciences
Free access
Volume 381, Number 1, January I 2002
Page(s) L13 - L16
Section Letters
DOI http://dx.doi.org/10.1051/0004-6361:20011544

A&A 381, L13-L16 (2002)
DOI: 10.1051/0004-6361:20011544


A network for interstellar CO - The first application of objective reduction techniques in astrochemistry

D. P. Ruffle1, J. G. L. Rae2, M. J. Pilling1, T. W. Hartquist2 and E. Herbst3

1  School of Chemistry, University of Leeds, Leeds LS2 9JT, UK
2  Department of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK
3  Departments of Physics and Astronomy, Ohio State University, Columbus OH, 43210-1106, USA

(Received 24 September 2001 / Accepted 6 November 2001 )

A reduced network for CO production and removal, obtained via the use of objective techniques, is shown to produce reliable results over a wide range of physical conditions. Our analysis indicates that reactions involving species with long carbon chains are important in governing the CO abundance in some translucent regions.

Key words: molecular processes -- stars: formation -- ISM: abundances -- ISM: clouds -- ISM: molecules

Offprint request: T. W. Hartquist

© ESO 2002