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Reaction Networks For Interstellar Chemical Modelling: Improvements and Challenges

hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierAMOR 2010
dc.contributor.authorWAKELAM, Valentine
hal.structure.identifierUniversity chemical laboratories
dc.contributor.authorSMITH, I. W. M.
hal.structure.identifierOhio State University [Columbus] [OSU]
dc.contributor.authorHERBST, E.
hal.structure.identifierInstitut für Physikalische Chemie [Göttingen]
hal.structure.identifierMax-Planck-Institut für Biophysikalische Chemie - Max Planck Institute for Biophysical Chemistry [Göttingen]
dc.contributor.authorTROE, J.
hal.structure.identifierStockholm University
dc.contributor.authorGEPPERT, W.
hal.structure.identifierSackler laboratory for Astrophysics
dc.contributor.authorLINNARTZ, H.
hal.structure.identifierSackler laboratory for Astrophysics
hal.structure.identifierHarvard-Smithsonian Center for Astrophysics [CfA]
dc.contributor.authorOBERG, K.
hal.structure.identifierLaboratoire Univers et Théories [LUTH (UMR_8102)]
dc.contributor.authorROUEFF, E.
hal.structure.identifierLaboratoire Univers et Théories [LUTH (UMR_8102)]
dc.contributor.authorAGÚNDEZ, M.
hal.structure.identifierLaboratoire de Chimie Physique D'Orsay [LCPO]
dc.contributor.authorPERNOT, P.
hal.structure.identifierSackler laboratory for Astrophysics
dc.contributor.authorCUPPEN, H. M.
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorLOISON, J. -C.
hal.structure.identifierGroupe de Recherche en Astronomie et Astrophysique du Languedoc [GRAAL]
dc.contributor.authorTALBI, D.
dc.date.created2010-11-04
dc.date.issued2010
dc.identifier.issn0038-6308
dc.description.abstractEnWe survey the current situation regarding chemical modelling of the synthesis of molecules in the interstellar medium. The present state of knowledge concerning the rate coefficients and their uncertainties for the major gas-phase processes -- ion-neutral reactions, neutral-neutral reactions, radiative association, and dissociative recombination -- is reviewed. Emphasis is placed on those reactions that have been identified, by sensitivity analyses, as 'crucial' in determining the predicted abundances of the species observed in the interstellar medium. These sensitivity analyses have been carried out for gas-phase models of three representative, molecule-rich, astronomical sources: the cold dense molecular clouds TMC-1 and L134N, and the expanding circumstellar envelope IRC +10216. Our review has led to the proposal of new values and uncertainties for the rate coefficients of many of the key reactions. The impact of these new data on the predicted abundances in TMC-1 and L134N is reported. Interstellar dust particles also influence the observed abundances of molecules in the interstellar medium. Their role is included in gas-grain, as distinct from gas-phase only, models. We review the methods for incorporating both accretion onto, and reactions on, the surfaces of grains in such models, as well as describing some recent experimental efforts to simulate and examine relevant processes in the laboratory. These efforts include experiments on the surface-catalysed recombination of hydrogen atoms, on chemical processing on and in the ices that are known to exist on the surface of interstellar grains, and on desorption processes, which may enable species formed on grains to return to the gas-phase.
dc.language.isoen
dc.publisherSpringer Verlag
dc.title.enReaction Networks For Interstellar Chemical Modelling: Improvements and Challenges
dc.typeArticle de revue
dc.identifier.doi10.1007/s11214-010-9712-5
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique galactique [astro-ph.GA]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Astrophysique galactique [astro-ph.GA]
dc.identifier.arxiv1011.1184
bordeaux.journalSpace Science Reviews
bordeaux.page-
bordeaux.volume156
bordeaux.issue1-4
bordeaux.peerReviewedoui
hal.identifierhal-00543722
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00543722v1
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