J/MNRAS/390/733ivo://CDS.VizieR/J/MNRAS/390/733doi:10.26093/cds/vizier.73900733CDSSmillie D.G.Pickering J.C.Smith P.L.2024-07-07T20:17:13Z2009-05-18T08:56:34ZCDS support team

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

cds-question@unistra.fratomic-physicsWe report CrIII ultraviolet (UV) transition wavelengths measured using a high-resolution Fourier transform spectrometer (FTS), for the first time, available for use as wavelength standards. The doubly ionized iron group element spectra dominate the observed opacity of hot B stars in the UV, and improved, accurate, wavelengths are required for the analysis of astronomical spectra. The spectrum was excited using a chromium-neon Penning discharge lamp and measured with the Imperial College vacuum ultraviolet FTS. 140 classified 3d^3^4s-3d^3^4p CrIII transition lines, in the spectral range 38000 to 49000cm^-1^ (2632 to 2041{AA}), the strongest having wavelength uncertainties less than one part in 10^7^, are presented.2008MNRAS.390..733Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/390/733CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/390/733https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/390/733http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/390/733https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/390/733https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/390/733http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/390/733GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/MNRAS/390/733/table1The classified Cr III transition linelist observed by FTSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlogIntLogarithm (to the base ten) of the integrated intensity (in arbitrary units)spect.line.intensityfloatFWHMLine full-width at half maximumcm**-1spect.line.widthfloatSNRSignal-to-noise ratiostat.snrintlam.airAir wavelength0.1nmem.wldoublelam.vacVacuum wavelength0.1nmem.wldoublesigmaLine wavenumbercm**-1em.wldoubleDsigmaWavenumber difference (sigma_obs_-sigma_Ritz_) (1)cm**-1em.wavenumber;arith.difffloate_sigmarms uncertainty on sigmacm**-1stat.errorfloatTransTransition (Lower - Upper)meta.id;phys.atmol.transitioncharNoteNote (2)meta.notechar