J/A+A/610/A57ivo://CDS.VizieR/J/A+A/610/A57doi:10.26093/cds/vizier.36100057CDSBarklem P.S.2018-03-12T09:16:51Z2018-03-02T16:00:03ZCDS support team

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

cds-question@unistra.fratomic-physicsExcitation and charge transfer in low-energy O+H collisions is studied; it is a problem of importance for modelling stellar spectra and obtaining accurate oxygen abundances in late-type stars including the Sun. The collisions have been studied theoretically using a previously presented method based on an asymptotic two-electron linear combination of atomic orbitals (LCAO) model of ionic-covalent interactions in the neutral atom-hydrogen-atom system, together with the multichannel Landau-Zener model. The method has been extended to include configurations involving excited states of hydrogen using an estimate for the two-electron transition coupling, but this extension was found to not lead to any remarkably high rates. Rate coefficients are calculated for temperatures in the range 1000-20000K, and charge transfer and (de)excitation processes involving the first excited S-states, 4s.^5^S^o^ and 4s.^3^S^o^, are found to have the highest rates.2018A&A...610A..57Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/610/A57CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/572/A103 : Inelastic silicon-hydrogen collision data (Belyaev+, 2014)J/A+A/606/A11 : Inelastic e+Mg collision data (Barklem+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/610/A57https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/610/A57http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/610/A57https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/610/A57https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/610/A57http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/610/A57GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/610/A57/statesStates and their energiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndex[1/21] Indexmeta.idintLabelTerm labelmeta.id;phys.atmol.termcharETerm energy in 1/cmcm**-1phys.energy;phys.atmol.leveldoubleJ/A+A/610/A57/listList of files in subdirectory filesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFileNameName of the file in subdirectory filesmeta.id;meta.filecharTitleTitle of the filemeta.title;meta.filechar