J/A+A/545/A12ivo://CDS.VizieR/J/A+A/545/A12doi:10.26093/cds/vizier.35450012CDSCherchneff I.2012-11-11T22:14:14Z2012-08-29T17:19:50ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frcarbon-starsstellar-evolutionary-modelsWe model the chemistry of the inner wind of the carbon star IRC+10216 and consider the effects of periodic shocks induced by the stellar pulsation on the gas to follow the non-equilibrium chemistry in the shocked gas layers. We consider a very complete set of chemical families, including hydrocarbons and aromatics, hydrides, halogens, and phosphorous-bearing species. Our derived abundances are compared to those for the latest observational data from large surveys and the Herschel telescope. A semi-analytical formalism based on parameterised fluid equations is used to describe the gas density, velocity, and temperature from 1R to 5R. The chemistry is described using a chemical kinetic network of reactions and a set of stiff, ordinary, coupled differential equations is solved.2012A&A...545A..12Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/545/A12CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/330/676 : IRC+10216 Silicon and sulfur chemistry (Willacy+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/545/A12https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/545/A12http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/545/A12https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/545/A12https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/545/A12http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/545/A12GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/545/A12/tablea1The chemical reaction network ordered by type of reactionsProdProductsphys.atmol.elementcharReactReactantsphys.atmol.elementcharnn factorstat.fit.paramfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCode[ABCD] Code for type of reaction (1)meta.codecharNumReaction number (1)meta.id;meta.maincharAA coefficient (in s^-1^, cm^3^/s or cm^6^/s depending on the type of process)phys.atmol.transProbdoubleEaActivation energy Ea in KelvinKphys.energyfloatRefReferences for the rate data (2)meta.refchar