J/ApJS/214/18ivo://CDS.VizieR/J/ApJS/214/18doi:10.26093/cds/vizier.22140018CDSWood M.P.Lawler J.E.Den Hartog E.A.Sneden C.Cowan J.J.2014-11-08T17:45:35Z2014-10-22T12:37:00ZCDS support team

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

cds-question@unistra.fratomic-physicsspectroscopychemical-abundancesNew experimental absolute atomic transition probabilities are reported for 203 lines of V II. Branching fractions are measured from spectra recorded using a Fourier transform spectrometer and an echelle spectrometer. The branching fractions are normalized with radiative lifetime measurements to determine the new transition probabilities. Generally good agreement is found between this work and previously reported V II transition probabilities. Two spectrometers, independent radiometric calibration methods, and independent data analysis routines enable a reduction in systematic uncertainties, in particular those due to optical depth errors. In addition, new hyperfine structure constants are measured for selected levels by least squares fitting line profiles in the FTS spectra. The new V II data are applied to high resolution visible and UV spectra of the Sun and metal-poor star HD 84937 to determine new, more accurate V abundances. Lines covering a range of wavelength and excitation potential are used to search for non-LTE effects. Very good agreement is found between our new solar photospheric V abundance, log{epsilon}(V)=3.95 from 15 V II lines, and the solar-system meteoritic value. In HD 84937, we derive [V/H]=-2.08 from 68 lines, leading to a value of [V/Fe]=0.24.2014ApJS..214...18Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/214/18CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/211/20 : NiI transition probability measurements (Wood+, 2014)J/ApJS/208/27 : Sun and HD 84937 TiII log(gf) and abundances (Wood+, 2013)J/ApJS/207/20 : Parity-forbidden [Co II] and [VII] lines (Ruffoni+, 2013)J/ApJS/207/13 : The spectrum and term analysis of VII (Thorne+, 2013)J/ApJ/762/26 : Most metal-poor stars. II. Galactic halo stars (Yong+, 2013)J/ApJS/194/35 : Atomic transition probabilities of Mn (Den Hartog+, 2011)J/MNRAS/412/843 : SAGA extremely metal-poor stars (Suda+, 2011)J/A+A/501/519 : Extremely metal-poor stars abundances (Bonifacio+, 2009)J/AJ/137/272 : Space velocities orbits in the MW halo (Roederer+ 2009)J/ApJS/182/80 : Rare earth abundances (Sneden+, 2009)J/ApJ/681/1524 : Detailed abundances for 28 metal-poor stars (Lai+, 2008)J/A+A/439/129 : HERES II. Spectroscopic analysis (Barklem+, 2005)J/A+A/416/1117 : Abundances in the early Galaxy (Cayrel+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/214/18https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/214/18http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/214/18https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/214/18https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/214/18http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/214/18GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJS/214/18/table3Experimental atomic transition probabilities for 203 lines of VII from upper odd-parity levels organized by increasing wavelength in airrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[2123.3/4600.2] Wavelength in air ({AA}) (1)0.1nmem.wl;phys.atmol.transitiondoubleE1Upper level (2)cm**-1phys.energy;phys.atmol.leveldoubleJ1[0/6] Upper level J value (2)phys.atmol.qnintE0Lower level (2)cm**-1phys.energy;phys.atmol.leveldoubleJ0[0/6] Lower level J value (2)phys.atmol.qnintATransition probability1e+06s**-1phys.atmol.transProbfloate_ATotal uncertainty in TranP1e+06s**-1stat.errorfloatlog.gf[-2.9/0.6] log(gf) (degeneracy times oscillator strength)arith.zpfloatJ/ApJS/214/18/table4New VII magnetic dipole hyperfine structure constants from FTS spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintConfAssigned configuration (1)phys.atmol.configuration;instr.setupTermTerm (1)phys.atmol.termJ[1/6] J value (1)phys.atmol.qnintP[eo] Parity (even or odd) (1)phys.atmol.paritycharE[2605/47052] Level energy (1)cm**-1phys.energy;phys.atmol.leveldoubleAhf[-13.7/30.5] This work hyperfine structure constant A0.001cm**-1phys.atmol.transProbfloate_Ahf[1/3] Ahf uncertainty0.001cm**-1stat.errorfloatAhf1[11.1/31.3]? Hyperfine structure constant A from Arvidsson (2)0.001cm**-1phys.atmol.transProbfloatnullablee_Ahf1[0.2/5.7]? Ahf1 uncertainty (2)0.001cm**-1stat.errorfloatnullableJ/ApJS/214/18/table5Hyperfine structure line component patterns for 67 lines of VII (ionized Vanadium)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintsig[21901/37415] Center-of-Gravity wavenumber {sigma}cm**-1em.freqdoublelambda[2672/4565] Center-of-Gravity air wavelength ({AA})0.1nmem.wl;phys.atmol.transitiondoubleF1[0.5/9.5] Upper level F total angular momentumphys.atmol.qnfloatF0[0.5/8.5] Lower level F total angular momentumphys.atmol.qnfloatdsigComponent offset wavenumber {delta}{sigma} (1)cm**-1stat.fit.omc;phys.energydoubledlamComponent offset wavelength {delta}{lambda} (1)0.1nmem.wl;arith.diffdoubleStr[0/1] Component strength normalized to sum to onespect.line.widthdoubleJ/ApJS/214/18/table7Sixty-eight lines of ionized vanadium in HD 84937recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[2677/40235] Air wavelength ({AA})0.1nmem.wl;phys.atmol.transitiondoubleE0[0.004/1.9] Lower level excitation energyeVphys.atmol.excitation;phys.atmol.levelfloatlog(gf)[-1.7/0.6] Log of degeneracy times oscillator strengthphys.atmol.oscStrengthfloatlog(eps)[1.7/2.1] Log of abundance log{epsilon} (H=12)phys.abundfloatHFS[yes/no ] Hyperfine structure used in abundance calculation?meta.codechar