J/ApJ/808/174ivo://CDS.VizieR/J/ApJ/808/174doi:10.26093/cds/vizier.18080174CDSBautista M.A.Fivet V.Ballance C.Quinet P.Ferland G.Mendoza C.,Kallman T.R.2017-01-23T22:00:00Z2015-12-21T13:24:13ZCDS support team

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

cds-question@unistra.fratomic-physicsWe present extensive calculations of radiative transition rates and electron impact collision strengths for FeII. The data sets involve 52 levels from the 3d^7^, 3d^6^4s, and 3d^5^4s^2^ configurations. Computations of A-values are carried out with a combination of state-of-the-art multiconfiguration approaches, namely the relativistic Hartree-Fock, Thomas-Fermi-Dirac potential, and Dirac-Fock methods, while the R-matrix plus intermediate coupling frame transformation, Breit-Pauli R-matrix, and Dirac R-matrix packages are used to obtain collision strengths. We examine the advantages and shortcomings of each of these methods, and estimate rate uncertainties from the resulting data dispersion. We proceed to construct excitation balance spectral models, and compare the predictions from each data set with observed spectra from various astronomical objects. We are thus able to establish benchmarks in the spectral modeling of [FeII] emission in the IR and optical regions as well as in the UV FeII absorption spectra. Finally, we provide diagnostic line ratios and line emissivities for emission spectroscopy as well as column densities for absorption spectroscopy.2015ApJ...808..174Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/808/174CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/554/A132 : Iron line list (FeI and FeII) (Genovali+, 2013)J/A+A/536/A74 : FeII forbidden lines radiative transition rates (Deb+, 2011)J/A+A/520/A57 : New FeII energy levels from stellar spectra (Castelli+, 2010)J/ApJ/709/611 : The multi-component absorber QSO 0318-0600 (Dunn+, 2010)J/A+A/508/1527 : SiII Radiative transition rates (Bautista+, 2009)J/MNRAS/395/855 : Spectroscopy (310-1040nm) of HH 202 (Mesa-Delgado+, 2009)J/A+A/475/765 : Fine structure forbidden lines in FeII (Ramsbottom+, 2007)J/A+AS/120/361 : IRON Project. XIX. Fe II radiative transitions (Quinet+ 1996)J/A+A/293/953 : IRON project VI. FeII collision strengths (Zhang+, 1995)http://etacar.umn.edu/ : HST Treasury program on eta Carinaehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/808/174https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/808/174http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/808/174https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/808/174https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/808/174http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/808/174GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJ/808/174/table3Energy Levels of the 3d^6^4s, 3d^7^, and 3d^5^4s^2^ configurationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/52] Index numbermeta.id;meta.mainintConfConfigurationphys.atmol.configuration;instr.setupLevLevelphys.atmol.qnE[0/0.3] Energy (1)phys.energy;phys.atmol.leveldoubleJ/ApJ/808/174/table10Fe II line branching ratiosrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintUp[2/52] Upper level designation \linkRole{the configurations for these levels}meta.id;phys.atmol.configuration;phys.atmol.levelintLow[1/47] Lower level designation \linkRole{the configurations for these levels}meta.id;phys.atmol.configuration;phys.atmol.levelintlambda[3175.3/873582.2] Line wavelength; Angstroms0.1nmem.wl;spect.linedoubleBRBranching ratiometa.notedoublee_BR[0/0.3] Uncertainty in BRstat.errordoubleJ/ApJ/808/174/table12Maxwellian averaged collision strengths for FeII vs temperaturerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLow[1/62] Lower level designation (1)meta.id;phys.atmol.configuration;phys.atmol.levelintUp[2/63] Upper level designation (1)meta.id;phys.atmol.configuration;phys.atmol.levelintCS5[0/10.5] Effective collision strength at 5000Kphys.atmol.collStrengthdoubleCS7[0/10.2] Effective collision strength at 7000Kphys.atmol.collStrengthdoubleCS10[0/9.8] Effective collision strength at 10000Kphys.atmol.collStrengthdoubleCS15[0/9.3] Effective collision strength at 15000Kphys.atmol.collStrengthdoubleCS20[0/8.8] Effective collision strength at 20000Kphys.atmol.collStrengthdoublee_CS10[3.4/256] Uncertainty in CS10%stat.errorfloatJ/ApJ/808/174/table11*Intensity ratios from lines from the same upper level in {eta} CarineaObs[0.6/116] Observed ratiospect.line.intensitydoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintUp[10/51] Upper level 1 designation \linkRole{the configurations for these levels}meta.id;phys.atmol.configuration;phys.atmol.levelintLow1[1/14] Lower level numerator designation \linkRole{the configurations for these levels}meta.id;phys.atmol.configuration;phys.atmol.levelintLow2[2/16] Lower level denominator designation \linkRole{the configurations for these levels}meta.id;phys.atmol.configuration;phys.atmol.levelintlambda1[3277.8/17971] Numerator wavelength0.1nmem.wlfloatlambda2[4080.4/18094] Denominator wavelength0.1nmem.wlfloate_Obs[0.01/70.5] Uncertainty in Obs%stat.errordoubleTh[0.009/72] Theoretical ratiospect.line.intensitydoublee_Th[0.0003/8.5] Uncertainty in Th%stat.errordouble