J/A+A/493/697ivo://CDS.VizieR/J/A+A/493/697doi:10.26093/cds/vizier.34930697CDSHudson C.E.2009-04-11T14:54:51Z2009-04-11T14:49:48ZCDS support team

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

cds-question@unistra.fratomic-physicsElectron impact excitation collision strengths are required for analysing and interpreting stellar observations. This calculation aims to provide fine-structure effective collision strengths for the Mg IX ion using a method that includes contributions from resonances. A 26-state Breit-Pauli R-matrix calculation has been performed.2009A&A...493..697Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/493/697CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/430/725 : N II effective collision strengths (Hudson+, 2005)J/A+A/432/731 : Effective collision strengths for C II (Wilson+, 2005)J/A+A/436/1131 : Effective collision strengths for Al III (Hudson+ 2005)J/A+A/452/1113 : S V effective collision strengths (Hudson+, 2006)J/A+A/494/729 : Effective collision strength of Mg V (Hudson+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/493/697https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/493/697http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/493/697https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/493/697https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/493/697http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/493/697GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/493/697/table4J-levelsJJ-valuephys.atmol.qnintLSLS statephys.atmol.configurationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndexIndex numbermeta.idintEEnergy of fine-structure level in Rydbergs (as determined by the present work)Ryphys.energy;phys.atmol.levelfloatJ/A+A/493/697/table6Effective collision strengths for MgIXECS6.4Effective collision at log(T)=6.40phys.atmol.collStrengthdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinti1Index number of lower transition statemeta.idinti2Index number of upper transition statemeta.idintECS3.0Effective collision at log(T)=3.00phys.atmol.collStrengthdoubleECS3.2Effective collision at log(T)=3.20phys.atmol.collStrengthdoubleECS3.4Effective collision at log(T)=3.40phys.atmol.collStrengthdoubleECS3.6Effective collision at log(T)=3.60phys.atmol.collStrengthdoubleECS3.8Effective collision at log(T)=3.80phys.atmol.collStrengthdoubleECS4.0Effective collision at log(T)=4.00phys.atmol.collStrengthdoubleECS4.2Effective collision at log(T)=4.20phys.atmol.collStrengthdoubleECS4.4Effective collision at log(T)=4.40phys.atmol.collStrengthdoubleECS4.6Effective collision at log(T)=4.60phys.atmol.collStrengthdoubleECS4.8Effective collision at log(T)=4.80phys.atmol.collStrengthdoubleECS5.0Effective collision at log(T)=5.00phys.atmol.collStrengthdoubleECS5.2Effective collision at log(T)=5.20phys.atmol.collStrengthdoubleECS5.4Effective collision at log(T)=5.40phys.atmol.collStrengthdoubleECS5.6Effective collision at log(T)=5.60phys.atmol.collStrengthdoubleECS5.8Effective collision at log(T)=5.80phys.atmol.collStrengthdoubleECS6.0Effective collision at log(T)=6.00phys.atmol.collStrengthdoubleECS6.2Effective collision at log(T)=6.20phys.atmol.collStrengthdoubleECS6.6Effective collision at log(T)=6.60phys.atmol.collStrengthdoubleECS6.8Effective collision at log(T)=6.80phys.atmol.collStrengthdoubleECS7.0Effective collision at log(T)=7.00phys.atmol.collStrengthdouble