J/A+A/377/361ivo://CDS.VizieR/J/A+A/377/361doi:10.26093/cds/vizier.33770361CDSPickering J.C.Johansson S.Smith P.L.2001-09-22T14:32:22Z2001-09-22T14:31:05ZCDS support team

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

cds-question@unistra.fratomic-physicsWe report measurements of the relative intensities of 81 emission lines of Fe II between 160nm and 350nm (62168cm^-1^ to 28564cm^-1^) from 4 levels by high resolution Fourier transform spectrometry, using a Penning discharge lamp as light source. These relative intensities have been used to determine the line branching fractions, which have then been combined with accurate experimental radiative lifetime measurements reported recently to give absolute transition probabilities and oscillator strengths for 81 lines. The accuracy of these f-values is compared with other previous experimental measurements, and with theoretical values. The new transition probabilities will allow accurate determinations of Fe II abundances in a wide variety of astrophysical objects.2001A&A...377..361Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/377/361CatalogResearchIsServedByTAP VizieR generic servicerelated-toVI/74 : Atomic Energy Level Data (NIST 1993)J/A+A/293/967 : IRON Project VII. Fe II radiative transitions (Nahar, 1995)ftp://ftp.wins.uva.nl/pub/orth/iron/FeII.E1 : Fe II loggf (Raassen, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/377/361https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/377/361http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/377/361https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/377/361https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/377/361http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/377/361GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/377/361/table3Finding list of Fe II transitions and log gf valuesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaVacVacuum wavelength0.1nmem.wldoubleprimarylambdaAir? Wavelength in air for {lambda}>2000{AA}0.1nmem.wldoublenullablesigmaVacuum wavenumber (G1)cm**-1phys.energy;phys.atmol.transitiondoubleNoteNote (1)meta.notecharloggf? Oscillator strength (this work)phys.atmol.wOscStrengthfloatnullablee_loggf? uncertainty (dex) in log gf,stat.errorfloatnullableloggfRRaassen oscillator strength (1999, ftp://ftp.wins.uva.nl/pub/orth/iron/FeII.E1)phys.atmol.wOscStrengthfloatUTermUpper lever term (2)phys.energy;phys.atmol.levelUEUpper level energy (2)cm**-1phys.energy;phys.atmol.leveldoubleLTermLower level term (2)phys.energy;phys.atmol.levelLELower level energy (2)cm**-1phys.energy;phys.atmol.leveldoubleJ/A+A/377/361/table2Absolute transition probabilities and oscillator strengths of Fe II transitions.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLevelLevel (1)meta.code;phys.atmol.configurationcharlambdaVacVacuum wavelength0.1nmem.wldoubleprimarylambdaAir? Wavelength in air for {lambda}>2000{AA}0.1nmem.wldoublenullablesigmaVacuum wavenumber (G1)cm**-1phys.energy;phys.atmol.transitiondoubleNote[x b] Note (2)meta.notecharBF? branching fraction;phys.atmol.branchingRatiofloatnullablee_BF? Percentage relative uncertainty in BF%stat.errorintnullableA? Absolute transition probability, found by combining BF and the measured lifetimes**-1phys.atmol.transProbdoublenullablee_A? Percentage uncertainty in A%stat.errorintnullableloggf? Oscillator strength measured in this workphys.atmol.wOscStrengthfloatnullablee_loggf? uncertainty (dex) in log gfstat.errorfloatnullableloggfRRaassen oscillator strength (1999, ftp://ftp.wins.uva.nl/pub/orth/iron/FeII.E1)phys.atmol.wOscStrengthfloatloggfKKurucz oscillator strength (2000, priv. com.)phys.atmol.wOscStrengthfloatloggfN? Nahar oscillator strength (1995, Cat. <J/A+A/293/967>)phys.atmol.wOscStrengthfloatnullable