J/A+A/707/A141ivo://CDS.VizieR/J/A+A/707/A141CDSLi W.Amarsi A. M.Jonsson P.2026-03-11T07:06:02Z2026-03-11T08:05:30ZCDS support team

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

cds-question@unistra.fratomic-physicsAccurate and comprehensive atomic data are essential for the modelling of stellar spectra. Uncertainties in the oscillator strengths of specific lines used for abundance analyses directly translate into uncertainties in the derived elemental abundances; and incomplete or biased atomic data sets can impart significant errors in non-local thermodynamic equilibrium modelling. Theoretical calculations of atomic data are therefore crucial to supplement the limited experimental results. In this work, we present extensive atomic data, including oscillator strengths, transition rates and lifetimes, for 1,730 electric dipole (E1) transitions among 107 levels in neutral sulphur (SI) by using the multiconfiguration Dirac-Hartree-Fock (MCDHF) and relativistic configuration interaction (RCI) methods. These levels belong to the configurations 3p^3np (n=3-7),3p^3nf (n=4,5), 3s3p^5, 3p^3ns (n=4-7), and 3p^3nd~(n=3-6). The accuracy of the computed transition rates is assessed by combining the comparison of the differences in transition rates between the Babushkin and Coulomb gauges with a cancellation factor analysis. Approximately 16% of the ab initio results achieved an accuracy classification of A-B, corresponding to uncertainties within 10%, as defined by the Atomic Spectra Database of the National Institute of Standards and Technology (NIST ASD). Applying a fine-tuning technique was found to significantly improve the accuracy of the results in the Coulomb gauge, thereby improving the consistency between the Babushkin and Coulomb gauges; about 24% of the fine-tuned transition data are assigned to the accuracy classes A-B.2026A&A...707A.141Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A141CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/707/A141https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/707/A141http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/707/A141https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/707/A141https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/707/A141http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/707/A141GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/707/A141/tablea1Energy levels and lifetimes for SIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoSequential numbermeta.recordintConfigConfigurationphys.atmol.configuration;instr.setupcharTermTerm labellingphys.atmol.termcharJTotal angular momentum quantum numberphys.mol.qnintParityParityphys.atmol.paritycharEabEnergy levels from ab initio calculation (1)cm**-1phys.energy;phys.atmol.leveldoubleEftEnergy levels from fine-tuning calculation (1)cm**-1phys.energy;phys.atmol.leveldoubleENIST? Energy levels from NIST ASD (1) (2)cm**-1phys.energy;phys.atmol.leveldoublenullabletauB-ab? Lifetime in Babushkin gauge from ab initiostime.lifetimedoublenullabletauC-ab? Lifetime in Coulomb gauge from ab initiostime.lifetimedoublenullabletauB-ft? Lifetime in Babushkin gauge from fine-tuningstime.lifetimedoublenullabletauC-ft? Lifetime in Coulomb gauge from fine-tuningstime.lifetimedoublenullableJ/A+A/707/A141/tablea2Electric dipole transition data for SIloggfB-ftWeighted oscillator strength in Babushkin gauge from fine-tuning calculationphys.atmol.oscStrengthfloatAccB-ftEstimated accuracy class of Babushkin gauge data from fine-tuning calculationmeta.code.classcharAccC-ftEstimated accuracy class of Coulomb gauge data from fine-tuning calculationmeta.code.classcharAccC-abEstimated accuracy class of Coulomb gauge data from ab initio calculationmeta.code.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintUpperUpper statephys.atmol.configurationcharJuTotal angular momentum quantum number of upper statephys.mol.qnintPuParity of upper statephys.atmol.paritycharLowerLower statephys.atmol.configurationcharJlTotal angular momentum quantum number of lower statephys.mol.qnintPlParity of lower statephys.atmol.paritycharlambdaWavelength (1)0.1nmem.wldoubleloggfB-abWeighted oscillator strength in Babushkin gauge from ab initio calculationphys.atmol.oscStrengthfloatloggfC-abWeighted oscillator strength in Coulomb gauge from ab initio calculationphys.atmol.oscStrengthfloatAB-abTransition probability in Babushkin gauge from ab initio calculations**-1phys.atmol.transProbdoubleAC-abTransition probability in Coulomb gauge from ab initio calculations**-1phys.atmol.transProbdoubleAccB-abEstimated accuracy class of Babushkin gauge data from ab initio calculationmeta.code.classcharloggfC-ftWeighted oscillator strength in Coulomb gauge from fine-tuning calculationphys.atmol.oscStrengthfloatAB-ftTransition probability in Babushkin gauge from fine-tuning calculations**-1phys.atmol.transProbdoubleAC-ftTransition probability in Coulomb gauge from fine-tuning calculations**-1phys.atmol.transProbdouble