J/ApJS/233/16ivo://CDS.VizieR/J/ApJS/233/16doi:10.26093/cds/vizier.22330016CDSHaris K.Kramida A.2018-05-14T09:06:37Z2018-02-28T08:14:07ZCDS support team

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

cds-question@unistra.fratomic-physicsIn this critical compilation, all experimental data on the spectrum of neutral carbon known to us were methodically evaluated and supplemented by parametric calculations with Cowan's codes. The sources of experimental data vary from laboratory to astrophysical objects, and employ different instrumentations, from classical grating and Fourier transform spectrometers to precise laser spectroscopy setups and various other modern techniques. This comprehensive evaluation provides accurate atomic data on energy levels and wavelengths (observed and Ritz) with their estimated uncertainties, as well as a uniform description of the observed line intensities. In total, 412 previously known energy levels were optimized with the help of 1221 selected best-observed lines participating in 1365 transitions in the wavelength region 750{AA}-609.14{mu}m. The list of recommended energy levels is extended by including 21 additional levels found through quantum-defect extrapolations or parametric calculations with Cowan's codes. In addition, 737 possibly observable transitions are predicted. Critically evaluated transition probabilities for 1616 lines are provided, of which 241 are new. With accurate energy levels obtained, combined with additional observed data on high Rydberg states, the ionization limit was determined to be 90820.348(9)cm-1 or 11.2602880(11)eV, in fair agreement with the previously recommended value, but more accurate.2017ApJS..233...16Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/233/16CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/375/591 : SUMER Spectral Atlas of Solar Disk Features (Curdt+, 2001)J/ApJS/211/4 : Thorium spectrum from 250nm to 5500nm (Redman+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/233/16https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/233/16http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/233/16https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/233/16https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/233/16http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/233/16GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJS/233/16/table2Observed energy levels of C IrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintConfigConfiguration, Term & J (1)meta.notecharEobs[0/133256] Observed energycm**-1phys.energy;phys.atmol.leveldoubleeEobs1[/0.008]? D1 Uncertainty of Eobs (2)cm**-1stat.errordoublenullableeEobs2[0/60]? Uncertainty of Eobs (2)cm**-1stat.errordoublenullablePerc[32/100]? Leading percentage (3)%stat.paramintnullablePerc2[4/48]? Second leading percentage (3)%stat.paramintnullableLComp2Second leading component (3)phys.atmol.configurationcharPerc3[4/28]? Third leading percentage (3)%stat.paramintnullableLComp33rd leading component (3)phys.atmol.configurationcharDiff[-197/206]? Differences of Eobs & Efit (4)cm**-1stat.fit.residualintnullableLSPrevious LS designation (1)phys.atmol.termcharNoL[1/141]? Number of lines in LOPT (5)meta.numberintnullableCommComment (6)meta.notecharJ/ApJS/233/16/table1Observed and predicted spectral lines of C ILLevLower Level (5)phys.atmol.qncharCommComments (12)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIntRelative Intensity (1)spect.line.intensitycharWavL[750.6/6091354]? Observed Wavelength (2)0.1nmem.wldoublenullablee_WavL[/0.6]? Uncertainty in WavL (2)0.1nmstat.errordoublenullableSNR[2/17210]? Signal-to-noise ratio (3)stat.snrintnullableFWHM[17/873]? Full-width at Half-Maximum (3)0.001cm**-1spect.line.widthintnullableWavN[16.4/133213]? Observed Wavenumber (4)cm**-1em.freqdoublenullablee_WavN[/30]? Uncertainty in WavN (4)cm**-1stat.errordoublenullableULevUpper Level (5)phys.atmol.qncharLE[0/86499] Lower Energy (6)cm**-1phys.energy;phys.atmol.leveldoubleUE[16/133256] Upper Energy (6)cm**-1phys.energy;phys.atmol.leveldoubleCWavL[750.6/6091354] Calculated (Ritz) Wavelength (2)0.1nmem.wl;phys.atmol.transitiondoublee_CWavL[/100] Uncertainty in CWavL (2)0.1nmstat.errordoubleA? Transition probability; A-values**-1phys.atmol.transProbcharAccAccuracy of A-value (7)meta.code.qualcharTypeType of transition (8)meta.notecharr_AReferences for A-value (9)meta.ref;pos.framecharr_WavLReference for WavL (10)meta.ref;pos.framecharNs? Number of sources for Int (11)meta.numbercharJ/ApJS/233/16/table9Optimized parameters of C IrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintConfigConfiguration (1)phys.atmol.configuration;instr.setupcharParmsSlater parameters (1)stat.fit.paramcharLSF[-542/218429]? Least-squares-fitted value (1)cm**-1stat.fit.omcdoublenullablee_Parms[-10/93]? Uncertainty of Params (2)stat.errorfloatnullableGroup[1/7]? Group index (3)meta.idintnullableHFR[0/210998]? Hartree-Fock value (1)cm**-1phys.energy;phys.atmol.leveldoublenullableRatio[0.4/1.2]? Ratio of LSF-to-HF (1)stat.fit.omcfloatnullableComm[FR] Comment (4)meta.notechar