J/ApJS/228/16ivo://CDS.VizieR/J/ApJS/228/16doi:10.26093/cds/vizier.22280016CDSAl-Labady N.Ozdalgic B.Er A.Guzelcimen F.Ozturk I.K.Kroger S.,Kruzins A.Tamanis M.Ferber R.Basar G.2017-06-08T12:28:15Z2017-04-28T09:41:31ZCDS support team

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

cds-question@unistra.fratomic-physicsspectroscopyultraviolet-astronomyThe Fourier Transform spectra of a Holmium hollow cathode discharge lamp have been investigated in the UV spectral range from 25000 up to 31530cm^-1^ (317 to 400nm). Two Ho spectra have been measured with neon and argon as buffer gases. Based on the intensity ratios from these two spectra, a distinction was made between atomic and ionic lines (ionic lines are discussed in an accompanying paper). Using the known Ho I energy levels, 71 lines could be classified as transitions of atomic Ho, 34 of which have not been published previously. Another 32 lines, which could not be classified, are listed in the literature and assigned as atomic Ho. An additional 370 spectral lines have been assigned to atomic Ho based on the signal-to-noise ratio in the two spectra measured under different discharge conditions, namely with buffer gases argon and neon, respectively. These 370 lines have not been previously listed in the literature.2017ApJS..228...16Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/228/16CatalogResearchIsServedByTAP VizieR generic servicerelated-toVI/74 : Atomic Energy Level Data (NIST 1993)J/ApJS/228/17 : Spectra of a Holmium in the near-UV. II. (Basar+, 2017)J/ApJS/182/51 : Transition probabilities of rare earth elements (Lawler+, 2009)http://www.nist.gov/pml/atomic-spectra-database/ : NIST atomic spectra databasehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/228/16https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/228/16http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/228/16https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/228/16https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/228/16http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/228/16GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapUVdefaultJ/ApJS/228/16/table2List of Ho I lines in the FT spectra from 25000cm^-1^ to 31530 cm^-1^ (classified as well as unclassified but unambiguously assigned to Ho I)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlamAir[317/400] Center-of-gravity wavelength in air (1)nmem.wl;phys.atmol.transitiondoublesig[24995.5/31529.4] Center-of-gravity transition wavenumber in vacuum (1)cm**-1phys.energy;phys.atmol.transitiondoubleSNR-Ar[2/1770] Signal-to-noise ratio from FT spectrum with Arstat.snrintSNR-Ne[2/1165] Signal-to-noise ratio from FT spectrum with Nestat.snrintR[0.6/2.7] Relation between S/N in Ho-Ar & in Ho-Ne spectrumstat.snrfloatCommComments (2)meta.notecharW[100/1760] Line widths; in milli-Kayser0.001cm**-1spect.line.widthintIndIndicator of hyperfine structure (3)meta.codecharDW[-1646/1339]? Total separation of the strong hyperfine components in milli-Kayser (4)0.001cm**-1spect.line.widthintnullableDs[-0.3/0.3]? Difference between the wavenumber in vacuum and the energy difference of the levelscm**-1em.wavenumber;arith.difffloatnullableEl[0/15130.4]? Level energy of lower levelcm**-1phys.energy;phys.atmol.leveldoublenullableJl[4.5/10.5]? J quantum number of lower levelmeta.id;meta.mainfloatnullableEu[25272.6/43278.6]? Level energy of upper levelcm**-1phys.energy;phys.atmol.leveldoublenullableJu[3.5/9.5]? J value of upper levelstat.value;phys.atmol.levelfloatnullable