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Modelling Diffuse Interstellar Environments

Published online by Cambridge University Press:  21 March 2006

Evelyne M. Roueff  and
Franck Le Petit
Evelyne M. Roueff
Affiliation:
LUTH and UMR 8102 du CNRS, Observatoire de Paris, Place J. Janssen, F-92190 Meudon, France email: evelyne.roueff@obspm.fr
Franck Le Petit
Affiliation:
LUTH and UMR 8102 du CNRS, Observatoire de Paris, Place J. Janssen, F-92190 Meudon, France email: evelyne.roueff@obspm.fr Onsala Space Observatory, S-439 92 Onsala, Sweden email: franck.lepetit@obspm.fr
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Abstract

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Diffuse clouds are defined as low-density clouds permeated by the ultraviolet interstellar radiation field. We discuss the ensemble of atomic, ionic and molecular observations in the context of our Photon Dominated Region model. The comparison with all observational constraints is limited and implies that the diffuse environment is more complex than originally thought.

Keywords

ISM: abundances — ISM: molecules — molecular processes
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S231: Astrochemistry: Recent Successes and Current Challenges , August 2005 , pp. 197 - 206
Copyright
2006 International Astronomical Union