J/A+AS/128/409ivo://CDS.VizieR/J/A+AS/128/409CDSDe Cuyper J.-P.Hensberge H.1999-02-18T11:46:47Z1999-02-18T12:46:34ZCDS support team

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

cds-question@unistra.frspectroscopyThorium-Argon lamps are commonly used as wavelength calibration units at moderately high spectral resolutions because of the richness of the thorium spectrum in the visual. The inclusion of blended lines whose position is assumed to coincide with the laboratory wavelength of the main component is shown to result in a calibration precision significantly worse than the intrinsic random noise limit. In order to avoid this degradation of the calibration, we present resolution-dependent Th-Ar wavelengths in the region 277 to >1000nm for use at pixel-scales (pixel-size expressed in wavelength units) between {lambda}/2.5x10+4 and {lambda}/10+5.1998A&AS..128..409Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/128/409CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/128/409https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/128/409http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/128/409https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/128/409https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/128/409http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/128/409GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+AS/128/409/table5a*Principal table for the standard case of the argon-to-thorium line strength ratiorecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMaincompLaboratory wavelength of the main component0.1nmem.wl;phys.atmol.transitiondoubleIonIon emitting the main componentphys.atmol.ionizationcharLogintRelative log intensity of the main componentspect.line.intensity;arith.ratiofloatlam025000? Blend wavelength for R=250000.1nmem.wldoublenullablelam033333? Blend wavelength for R=333330.1nmem.wldoublenullablelam043700? Blend wavelength for R=437000.1nmem.wldoublenullablelam050000? Blend wavelength for R=500000.1nmem.wldoublenullablelam100000? Blend wavelength for R=1000000.1nmem.wldoublenullabledp025? Displacement of the line for R=25000pixinstr.calibfloatnullables025? Discretisation stability of dp025 (1)pixinstr.calibfloatnullabledp033? Displacement of the line for R=33333pixinstr.calibfloatnullables033? Discretisation stability of dp033 (1)pixinstr.calibfloatnullabledp043? Displacement of the line for R=43700pixinstr.calibfloatnullables043? Discretisation stability of dp043 (1)pixinstr.calibfloatnullabledp050? Displacement of the line for R=50000pixinstr.calibfloatnullables050? Discretisation stability of dp050 (1)pixinstr.calibfloatnullabledp100? Displacement of the line for R=100000pixinstr.calibfloatnullables100? Discretisation stability of dp100 (1)pixinstr.calibfloatnullableJ/A+AS/128/409/table5b*Principal table for the argon rich caserecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMaincompLaboratory wavelength of the main component0.1nmem.wl;phys.atmol.transitiondoubleIonIon emitting the main componentphys.atmol.ionizationcharLogintRelative log intensity of the main componentspect.line.intensity;arith.ratiofloatlam025000? Blend wavelength for R=250000.1nmem.wldoublenullablelam033333? Blend wavelength for R=333330.1nmem.wldoublenullablelam043700? Blend wavelength for R=437000.1nmem.wldoublenullablelam050000? Blend wavelength for R=500000.1nmem.wldoublenullablelam100000? Blend wavelength for R=1000000.1nmem.wldoublenullabledp025? Displacement of the line for R=25000pixinstr.calibfloatnullables025? Discretisation stability of dp025 (1)pixinstr.calibfloatnullabledp033? Displacement of the line for R=33333pixinstr.calibfloatnullables033? Discretisation stability of dp033 (1)pixinstr.calibfloatnullabledp043? Displacement of the line for R=43700pixinstr.calibfloatnullables043? Discretisation stability of dp043 (1)pixinstr.calibfloatnullabledp050? Displacement of the line for R=50000pixinstr.calibfloatnullables050? Discretisation stability of dp050 (1)pixinstr.calibfloatnullabledp100? Displacement of the line for R=100000pixinstr.calibfloatnullables100? Discretisation stability of dp100 (1)pixinstr.calibfloatnullableJ/A+AS/128/409/table6Selected linesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRLambda/pixel-scale (1)instr.dispersionintLambdaPixel-scale dependent blend wavelength0.1nmem.wldoubleMaincompLaboratory wavelength of the main component0.1nmem.wl;phys.atmol.transitiondoubleIonIon emitting the main componentphys.atmol.ionizationchar