Molecules as Diagnostic Tools in the Interstellar Medium - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Molecular Physics Année : 2007

Molecules as Diagnostic Tools in the Interstellar Medium

Résumé

Analysis of light emission from different regions of the interstellar medium and circumstellar environments gives crucial information about the chemical composition and the physical conditions in these regions. Interpretation of the observed spectra requires the knowledge of collisional excitation rates as well as radiative rates participating to the line formation. In a first part, this paper focuses on collisional excitation rates of molecules relevant to the interstellar medium. It discusses currently available data and outlines new work carried out by the authors. Due to the use of accurate ab initio potential energy surfaces, the new rate coefficients differ significantly from previously published ones. In a second part, the paper analyses from two examples how the use of the new rates could lead to important changes in the interpretation of molecular emission emerging from molecular clouds.

Mots clés

Fichier principal
Vignette du fichier
PEER_stage2_10.1080%2F00268970701361306.pdf (352.23 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00513096 , version 1 (01-09-2010)

Identifiants

Citer

Nicole Feautrier, Annie Spielfiedel, Christian Balança, Fabrice Dayou, Francois Lique, et al.. Molecules as Diagnostic Tools in the Interstellar Medium. Molecular Physics, 2007, 105 (09), pp.1263-1269. ⟨10.1080/00268970701361306⟩. ⟨hal-00513096⟩
295 Consultations
158 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More