J/A+A/538/A52ivo://CDS.VizieR/J/A+A/538/A52doi:10.26093/cds/vizier.35380052CDSMassacrier G.Artru M.-C.2017-06-12T08:25:15Z2012-02-02T07:55:12ZCDS support team

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

cds-question@unistra.fratomic-physicsSpectroscopic data for scandium is sparse, while an extensive set is needed to introduce this element into stellar opacity calculations and, more importantly, into stellar models dealing with radiative diffusion. Our goal is to provide extensive energy levels and radiative transitions data for nineteen ionization stages of scandium relevant to stellar interiors, namely from Sc III to Sc XXI. We used the FAC code. This code provides ab initio theoretical values for energy levels in jj-coupling and oscillator strengths of all permitted transitions. Detailed correspondences are established with compiled data from the National Institute of Standards and Technology (NIST) database, to locate as much as possible the observed levels and lines at their experimental values and to estimate the quality of our data. Comparisons were also made with the spectroscopic data delivered by Kurucz. The theoretical data retained in tables include 21842 levels and more than two millions transitions. By comparison, the NIST compilation gives a total of 820 levels and 677 gf-values. The good agreement obtained when comparing the new data with those of the NIST compilation demonstrates their quality. This work on scandium shows that the FAC code is efficient in providing spectroscopic data that are unavailable from laboratory analyses but necessary for accurate simulations of stellar plasmas.2012A&A...538A..52Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/538/A52CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/538/A52https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/538/A52http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/538/A52https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/538/A52https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/538/A52http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/538/A52GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/538/A52/table4*Wavelengths and gf-values for Sc III to Sc XXIlambda[0.2,] Wavelength in vacuumnmem.wl;phys.atmol.transitiondoubleindexedlog(gf)Weighted oscillator strength gf (log10)phys.atmol.oscStrengthfloatIon[21.02/21.20] Ion code for ScIII to ScXXImeta.code;phys.atmol.ionStagefloatElowExcitation energy of the lower levelcm**-1phys.energy;phys.atmol.excitationdoubleJlow[0/11] Total angular momentum of lower levelphys.angMomentumfloatEupExcitation energy of the upper levelcm**-1phys.energy;phys.atmol.excitationdoubleJup[0/12] Total angular momentum of upper levelphys.angMomentumfloatnllowOuter electron subshell for the lower levelphys.atmol.configurationcharnlupOuter electron subshell for the upper levelphys.atmol.configurationcharFlagFlag for a comparison with NIST (G1)meta.code.errorcharlambdaN? NIST wavelength (2)nmem.wl;phys.atmol.transitiondoublenullablelog(gfN)? NIST gf value (log10)(3)phys.atmol.oscStrengthfloatnullablef_ElowN([) Flag on ElowN (4)meta.codecharElowN? NIST energy (cm-1) of the lower level (4)cm**-1phys.energy;phys.atmol.excitationdoublenullablen_ElowN[ +x] Flag on ElowN (4)meta.notecharf_EupN([) Flag on EupN (4)meta.codecharEupN? NIST energy (cm-1) of the upper level (4)cm**-1phys.energy;phys.atmol.excitationdoublenullablen_EupN[ +x] Flag on EupN (4)meta.notecharJ/A+A/538/A52/table5*Level list for Sc III to Sc XXINel[1/19] Number of electrons (1 for ScXXI)meta.numberinti[0/2661] Index number of the level (1)meta.idintprimaryEAdopted excitation energy of the levelcm**-1phys.energy;phys.atmol.excitationdouble2J+1[-24/25] Degeneracy 2J+1 of the level times -1/1 for odd/even levelphys.electron.degenintConfLeading configurationphys.atmol.configuration;instr.setupcharDEFDifference between the adopted energy (col.3) and the FAC resultcm**-1phys.energy;arith.diffdoubleDEN? Difference between the adopted energy (col.3) and the NIST value (2)cm**-1phys.energy;arith.diffdoublenullablef_EN([) Flag on EN (3)meta.codecharEN? Level energy according to NIST (3)cm**-1phys.energy;phys.atmol.leveldoublenullablen_EN[ +x] Flag on EN (3)meta.notecharLevelN? NIST level designation (2)meta.id;meta.maincharJ/A+A/538/A52/linesExtensive line list forNeSimbad column added by the CDSmeta.numberintnullableiup[2/2661] Index number of the upper level (1)meta.idint2J+1up[-24/25] Degeneracy 2J+1 of the upper level times -1/1 for odd/even levelphys.electron.degenintilow[0/2661] Index number of the lower level (1)meta.idint2J+1low[-24/25] Degeneracy 2J+1 of the lower level times -1/1 for odd/even levelphys.electron.degenintElineEnergy of the transitioncm**-1phys.energy;phys.atmol.transitiondoublelog(gf)Weighted oscillator strength gf (log10)phys.atmol.oscStrengthfloatFlagFlag for a comparison with NIST (G1)meta.code.errorcharElineN? NIST energy of the transition (3)cm**-1phys.energy;phys.atmol.transitiondoublenullablelog(gfN)? NIST gf value (log10)(4)phys.atmol.oscStrengthfloatnullable