J/ApJS/122/355ivo://CDS.VizieR/J/ApJS/122/355doi:10.26093/cds/vizier.21220355CDSVanden Berk D. E.Lauroesch J. T.Stoughton C.Szalay A. S.,Koo D. C.Crotts A. P. S.Blades J. C.Melott A. L.,Boyle B. J.Broadhurst T. J.York D. G.2000-02-23T20:11:46Z2000-02-23T21:11:33ZCDS support team

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

cds-question@unistra.frline-intensitiesnorth-galactic-polequasarsredshiftedspectroscopyultraviolet-astronomyWe examine the clustering properties of low-redshift Ly{alpha} and heavy-element QSO absorption line systems seen in the spectra of 13 QSOs at the Galactic poles. This is the densest sample of ~1 degree separated QSOs observed spectroscopically with the Hubble Space Telescope to date. At the median redshift of the Ly{alpha} sample (z{=~}0.7), the QSO lines of sight are separated on transverse scales from about 15 to 200h^-1^Mpc (q_0_=0.5, H=100h.km/s/Mpc), allowing the three-dimensional clustering of the absorbers to be examined on those scales. The Galactic poles are also regions where relatively deep and wide-field galaxy redshift surveys have taken place, so the distributions of galaxies and Ly{alpha} systems can be compared within the same volume of space. There are 545 total absorption lines detected in the complete sample from 13 QSOs. We identify 307 Ly{alpha} systems, of which 18 contain heavy-element lines. We confirm the relatively slow redshift number density evolution for Ly systems at z{<=}1. There are also five likely C IV doublets in our sample, for which the Ly{alpha} line is not accessible.1999ApJS..122..355Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/122/355CatalogResearchIsServedByTAP VizieR generic servicerelated-toVII/158 : Revised and Updated Catalog of Quasi-stellar Objects (Hewitt+ 1993)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/122/355https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/122/355http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/122/355https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/122/355https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/122/355http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/122/355GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapHSTUVdefaultJ/ApJS/122/355/table12Line identifications for TON 155z? Redshift from primary linefloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.intNumLine numberintWaveObserved wavelength of line (in vacuum)0.1nmfloate_WaveUncertainty of the wavelength position0.1nmfloatEWEquivalent width of the line0.1nmfloate_EWUncertainty of EW0.1nmfloatFWHM? Full width half Maximum of the line0.1nmfloatnullablee_FWHM? Uncertainty of FWHM0.1nmfloatnullablel_SLLimit on the SLcharSLSignificance level (1)floatf_SL[a] A SL < 4.5 line. Not in the complete samplecharIDPrimary line identificationcharwave? Primary line wavelength identificationnmfloatnullablef_ID[b] Identification highly uncertaincharID2Secondary line identificationcharwave2? Secondary line wavelength identificationnmfloatnullablez2? Redshift from secondary linefloatnullableJ/ApJS/122/355/table4Line identifications for B2 1248+30FWHM? Full width half Maximum of the line0.1nmfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.intNumLine numberintWaveObserved wavelength of line (in vacuum)0.1nmfloate_WaveUncertainty of the wavelength position0.1nmfloatEWEquivalent width of the line0.1nmfloate_EWUncertainty of EW0.1nmfloate_FWHM? Uncertainty of FWHM0.1nmfloatnullablel_SLLimit on the SLcharSLSignificance level (1)floatf_SL[a] A SL < 4.5 line. Not in the complete samplecharIDPrimary line identificationcharwave? Primary line wavelength identificationnmfloatnullablef_ID[b] Identification highly uncertaincharz? Redshift from primary linefloatnullableID2Secondary line identificationcharwave2? Secondary line wavelength identificationnmfloatnullablez2? Redshift from secondary linefloatnullableJ/ApJS/122/355/table5Line identifications for CSO 173EWEquivalent width of the line0.1nmfloatz2? Redshift from secondary linefloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.intNumLine numberintWaveObserved wavelength of line (in vacuum)0.1nmfloate_WaveUncertainty of the wavelength position0.1nmfloate_EWUncertainty of EW0.1nmfloatFWHM? Full width half Maximum of the line0.1nmfloatnullablee_FWHM? Uncertainty of FWHM0.1nmfloatnullablel_SLLimit on the SLcharSLSignificance level (1)floatf_SL[a] A SL < 4.5 line. Not in the complete samplecharIDPrimary line identificationcharwave? Primary line wavelength identificationnmfloatnullablef_ID[b] Identification highly uncertaincharz? Redshift from primary linefloatnullableID2Secondary line identificationcharwave2? Secondary line wavelength identificationnmfloatnullableJ/ApJS/122/355/table6Line identifications for CSO 176IDPrimary line identificationcharSLSignificance level (1)floatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intNumLine numberintWaveObserved wavelength of line (in vacuum)0.1nmfloate_WaveUncertainty of the wavelength position0.1nmfloatEWEquivalent width of the line0.1nmfloate_EWUncertainty of EW0.1nmfloatFWHM? Full width half Maximum of the line0.1nmfloatnullablee_FWHM? Uncertainty of FWHM0.1nmfloatnullablel_SLLimit on the SLcharf_SL[a] A SL < 4.5 line. Not in the complete samplecharwave? Primary line wavelength identificationnmfloatnullablef_ID[b] Identification highly uncertaincharz? Redshift from primary linefloatnullableID2Secondary line identificationcharwave2? Secondary line wavelength identificationnmfloatnullablez2? Redshift from secondary linefloatnullableJ/ApJS/122/355/table7Line identifications for CSO 179WaveObserved wavelength of line (in vacuum)0.1nmfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intNumLine numberinte_WaveUncertainty of the wavelength position0.1nmfloatEWEquivalent width of the line0.1nmfloate_EWUncertainty of EW0.1nmfloatFWHM? Full width half Maximum of the line0.1nmfloatnullablee_FWHM? Uncertainty of FWHM0.1nmfloatnullablel_SLLimit on the SLcharSLSignificance level (1)floatf_SL[a] A SL < 4.5 line. Not in the complete samplecharIDPrimary line identificationcharwave? Primary line wavelength identificationnmfloatnullablef_ID[b] Identification highly uncertaincharz? Redshift from primary linefloatnullableID2Secondary line identificationcharwave2? Secondary line wavelength identificationnmfloatnullablez2? Redshift from secondary linefloatnullableJ/ApJS/122/355/table8Line identifications for B201 1257+34recnoRecord number assigned by the VizieR team. Should Not be used for identification.intNumLine numberintWaveObserved wavelength of line (in vacuum)0.1nmfloate_WaveUncertainty of the wavelength position0.1nmfloatEWEquivalent width of the line0.1nmfloate_EWUncertainty of EW0.1nmfloatFWHM? Full width half Maximum of the line0.1nmfloatnullablee_FWHM? Uncertainty of FWHM0.1nmfloatnullablel_SLLimit on the SLcharSLSignificance level (1)floatf_SL[a] A SL < 4.5 line. Not in the complete samplecharIDPrimary line identificationcharwave? Primary line wavelength identificationnmfloatnullablef_ID[b] Identification highly uncertaincharz? Redshift from primary linefloatnullableID2Secondary line identificationcharwave2? Secondary line wavelength identificationnmfloatnullablez2? Redshift from secondary linefloatnullableJ/ApJS/122/355/table9Line identifications for 1306+3021NumLine numberintID2Secondary line identificationcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intWaveObserved wavelength of line (in vacuum)0.1nmfloate_WaveUncertainty of the wavelength position0.1nmfloatEWEquivalent width of the line0.1nmfloate_EWUncertainty of EW0.1nmfloatFWHM? Full width half Maximum of the line0.1nmfloatnullablee_FWHM? Uncertainty of FWHM0.1nmfloatnullablel_SLLimit on the SLcharSLSignificance level (1)floatf_SL[a] A SL < 4.5 line. Not in the complete samplecharIDPrimary line identificationcharwave? Primary line wavelength identificationnmfloatnullablef_ID[b] Identification highly uncertaincharz? Redshift from primary linefloatnullablewave2? Secondary line wavelength identificationnmfloatnullablez2? Redshift from secondary linefloatnullableJ/ApJS/122/355/table10Line identifications for PG 1309+355recnoRecord number assigned by the VizieR team. Should Not be used for identification.intNumLine numberintWaveObserved wavelength of line (in vacuum)0.1nmfloate_WaveUncertainty of the wavelength position0.1nmfloatEWEquivalent width of the line0.1nmfloate_EWUncertainty of EW0.1nmfloatFWHM? Full width half Maximum of the line0.1nmfloatnullablee_FWHM? Uncertainty of FWHM0.1nmfloatnullablel_SLLimit on the SLcharSLSignificance level (1)floatf_SL[a] A SL < 4.5 line. Not in the complete samplecharIDPrimary line identificationcharwave? Primary line wavelength identificationnmfloatnullablef_ID[b] Identification highly uncertaincharz? Redshift from primary linefloatnullableID2Secondary line identificationcharwave2? Secondary line wavelength identificationnmfloatnullablez2? Redshift from secondary linefloatnullableJ/ApJS/122/355/table11Line identifications for TON 153recnoRecord number assigned by the VizieR team. Should Not be used for identification.intNumLine numberintWaveObserved wavelength of line (in vacuum)0.1nmfloate_WaveUncertainty of the wavelength position0.1nmfloatEWEquivalent width of the line0.1nmfloate_EWUncertainty of EW0.1nmfloatFWHM? Full width half Maximum of the line0.1nmfloatnullablee_FWHM? Uncertainty of FWHM0.1nmfloatnullablel_SLLimit on the SLcharSLSignificance level (1)floatf_SL[a] A SL < 4.5 line. Not in the complete samplecharIDPrimary line identificationcharwave? Primary line wavelength identificationnmfloatnullablef_ID[b] Identification highly uncertaincharz? Redshift from primary linefloatnullableID2Secondary line identificationcharwave2? Secondary line wavelength identificationnmfloatnullablez2? Redshift from secondary linefloatnullableJ/ApJS/122/355/table13Line identifications for TON 156l_SLLimit on the SLcharSLSignificance level (1)floatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intNumLine numberintWaveObserved wavelength of line (in vacuum)0.1nmfloate_WaveUncertainty of the wavelength position0.1nmfloatEWEquivalent width of the line0.1nmfloate_EWUncertainty of EW0.1nmfloatFWHM? Full width half Maximum of the line0.1nmfloatnullablee_FWHM? Uncertainty of FWHM0.1nmfloatnullablef_SL[a] A SL < 4.5 line. Not in the complete samplecharIDPrimary line identificationcharwave? Primary line wavelength identificationnmfloatnullablef_ID[b] Identification highly uncertaincharz? Redshift from primary linefloatnullableID2Secondary line identificationcharwave2? Secondary line wavelength identificationnmfloatnullablez2? Redshift from secondary linefloatnullableJ/ApJS/122/355/table14Line identifications for TON 157NumLine numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intWaveObserved wavelength of line (in vacuum)0.1nmfloate_WaveUncertainty of the wavelength position0.1nmfloatEWEquivalent width of the line0.1nmfloate_EWUncertainty of EW0.1nmfloatFWHM? Full width half Maximum of the line0.1nmfloatnullablee_FWHM? Uncertainty of FWHM0.1nmfloatnullablel_SLLimit on the SLcharSLSignificance level (1)floatf_SL[a] A SL < 4.5 line. Not in the complete samplecharIDPrimary line identificationcharwave? Primary line wavelength identificationnmfloatnullablef_ID[b] Identification highly uncertaincharz? Redshift from primary linefloatnullableID2Secondary line identificationcharwave2? Secondary line wavelength identificationnmfloatnullablez2? Redshift from secondary linefloatnullableJ/ApJS/122/355/table15Line identifications for 3C 286recnoRecord number assigned by the VizieR team. Should Not be used for identification.intNumLine numberintWaveObserved wavelength of line (in vacuum)0.1nmfloate_WaveUncertainty of the wavelength position0.1nmfloatEWEquivalent width of the line0.1nmfloate_EWUncertainty of EW0.1nmfloatFWHM? Full width half Maximum of the line0.1nmfloatnullablee_FWHM? Uncertainty of FWHM0.1nmfloatnullablel_SLLimit on the SLcharSLSignificance level (1)floatf_SL[a] A SL < 4.5 line. Not in the complete samplecharIDPrimary line identificationcharwave? Primary line wavelength identificationnmfloatnullablef_ID[b] Identification highly uncertaincharz? Redshift from primary linefloatnullableID2Secondary line identificationcharwave2? Secondary line wavelength identificationnmfloatnullablez2? Redshift from secondary linefloatnullableJ/ApJS/122/355/table16Line identifications for CT 336f_SL[a] A SL < 4.5 line. Not in the complete samplecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intNumLine numberintWaveObserved wavelength of line (in vacuum)0.1nmfloate_WaveUncertainty of the wavelength position0.1nmfloatEWEquivalent width of the line0.1nmfloate_EWUncertainty of EW0.1nmfloatFWHM? Full width half Maximum of the line0.1nmfloatnullablee_FWHM? Uncertainty of FWHM0.1nmfloatnullablel_SLLimit on the SLcharSLSignificance level (1)floatIDPrimary line identificationcharwave? Primary line wavelength identificationnmfloatnullablef_ID[b] Identification highly uncertaincharz? Redshift from primary linefloatnullableID2Secondary line identificationcharwave2? Secondary line wavelength identificationnmfloatnullablez2? Redshift from secondary linefloatnullable