SDSS DR2 QSO and DLA properties J/MNRAS/354/L31 ivo://CDS.VizieR/J/MNRAS/354/L31 doi:10.26093/cds/vizier.73549031 CDS Murphy M.T. Liske J. 2024-06-30T20:16:40Z 2006-02-23T13:14:11Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr quasars redshifted line-intensities We use Sloan Digital Sky Survey (SDSS) Data Release 2 quasi-stellar object (QSO) spectra to constrain the dust-reddening caused by intervening damped Lyman {alpha} systems (DLAs). Comparing the spectral index distribution of a 70 sight-line DLA sample with that of a large control sample reveals no evidence for dust-reddening at z~3. 2004MNRAS.354L..31M https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/354/L31 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to J/AJ/126/2579 : SDSS quasar catalog. First data release (Schneider+, 2003) J/MNRAS/354/L25 : MgII absorbers in SDSS QSOs (Bouche+, 2004) http://www.sdss.org/dr2 : SDSS-DR2 Home Page https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/354/L31 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/354/L31 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/354/L31 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/354/L31 https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/354/L31 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/354/L31 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/MNRAS/354/L31/table1 (Catalogue of DR2 QSO and DLA properties.) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/354/L31/table1? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/354/L31/table1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/354/L31/table1? 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https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/354/L31?format=ascii Optical default J/MNRAS/354/L31/table1 Catalogue of DR2 QSO and DLA properties. recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int SDSS SDSS J2000 name of the QSO derived from the RA and DEC supplied in the FITS headers of the spectra (HHMMSS.ss+DDMMSS.s) char z SDSS emission redshift of the QSO given in the FITS headers of the spectra. float r'mag r'-band PSF magnitude corrected for Galactic extinction mag float i'mag i'-band PSF magnitude corrected for Galactic extinction mag float z'mag z'-band PSF magnitude corrected for Galactic extinction mag float Sp+Index Spectral index. float e_Sp+Index 1-sigma statistical error in spectral index float S/Nmin Minimum signal-to-noise ratio float zabs ? Absorption redshift of the DLA (approximate only) float nullable EWHa ? Rest-frame equivalent width of the damped Lyman alpha line 0.1nm float nullable e_EWHa ? 1-sigma statistical error in EWHa 0.1nm float nullable DLA [0/2] Status of DLA detection (1) int Target [0/1] Primary (1) or secondary (0) SDSS target int DR1 [0/1] QSO appears (1) or did not appears (0) in SDSS DR1 QSO catalogue (Cat. <J/AJ/126/2579>) int BAL [0/1] QSO deemed (1) or not deemed (0) to have BALs (2) int _RA Position (derived from SDSS Name) (right ascension part) deg pos.eq.ra;meta.main _DE Position (derived from SDSS Name) (declination part) deg pos.eq.dec;meta.main