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Value-Added Catalogs

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  • Second edition of the SDSS Quasar Catalog As decribed in Schneider et al. (2003, AJ 126, 2579), this catalog contains 16,713 quasars from DR1 that have i-band luminosities brighter than -22, at least one broad emission line, and highly reliable redshifts. The catalog is now available in ASCII and FITS binary table format.
  • Composite red quasar spectra As described in Richards et al. (2003), Red and Reddened Quasars in the SDSS, AJ, in press, these spectra are composites as a function of relative g-i color, with input objects normalized such that both the absolute magnitude and redshift distributions are the same in like composites. We provide this tarball of composite red quasar spectra for download.
  • Composite broad-absorption line (BAL) quasar spectra as a function of BALQSO type from Reichard et al. 2003, A Catalog of Broad Absorption Line Quasars from the Sloan Digital Sky Survey Early Data Release, AJ, 125, 1711 (also astro-ph/0301019) and Reichard et al. 2003, Continuum and Emission-Line Properties of Broad Absorption Line Quasars, AJ, in press (astro-ph/0308508). We provide this tarball of composite BAL quasar spectra from the SDSS Early Data Relase; see the enclosed README file for more information.
  • SDSS Unusual BAL Quasars A sample of 23 unusual Broad Absorption Line Quasars has been assembled from both the SDSS EDR and some post-EDR data, totalling approximately 8000 quasar spectra. No further examples of the five categories of unusual BAL quasars discussed in the paper could be found among the data inspected, at least for spectra with SNR at least 6 per pixel in at least one of the g, r, or i bands (see section 4 of the paper). The paper also presents a revised balnicity index for deciding whether a quasar is a BAL quasar or not.

    Calibrated SDSS and followup spectra of all 23 objects, plus IRAF and SM code for calculating the traditional and revised balnicity indices, are available in a gzipped tar file.

    Questions regarding the BAL quasar work can be addressed to the lead author, Pat Hall (pathall@astro.princeton.edu), of Princeton University.

  • DR1 White Dwarf catalog as reported by Kleinman et al. 2004, ApJ 607, 426 A Catalog of Spectroscopically Identified White Dwarf Stars in the First Data Release of the Sloan Digital Sky Survey (also available at astro-ph/0402209).
  • Moving Object Catalog (MOC) The Sloan Digital Sky Survey Moving Object Catalog lists astrometric and photometric data for 134,335 moving objects observed prior to March 11, 2003. The catalog also includes orbital elements for 26,847 previously known objects.
  • SDSS Cut & Enhance galaxy cluster catalog The Sloan Digital Sky Survey CE galaxy cluster catalog (Goto et al. 2002, AJ 123, 1807) uses color cuts combined with a density enhancement algorithm to detect clusters of galaxies. The SDSS CE galaxy cluster catalog contains an estimated redshift and richness for each cluster found in 350 sq. deg. of SDSS commissioning data.
  • NYU Value-Added Galaxy Catalog The NYU Value-Added Galaxy Catalog (NYU-VAGC) is a cross-matched collection of galaxy catalogs, including the SDSS, maintained for the study of galaxy formation and evolution. It includes carefully constructed large-scale structure samples useful for calculating power spectra, etc, and includes, e.g., the "LSS Sample12" described in various Blanton et al. and Tegmark et al. SDSS papers. The SDSS data used have been reduced independently from the official SDSS reductions included in DR2, especially in photometric calibration, but the differences are minor. There is also a page describing the results of Blanton et al.'s determination of the SDSS galaxy luminosity function.
  • Eigenspectra of 170,000 SDSS galaxies As described in Yip et al. (2004, AJ in press, also astro-ph/0407061), this set of eigenspectra (Connolly et al. 1995 AJ, 110, 1071) serves in the spectral classification of galaxy and in the compression of the massive information within the sample, among other applications. The rest-wavelength coverage is from 3450 to 8350 angstrom. We provide this tarball of eigenspectra and mean spectra for download, containing both ASCII tables and GIF/ps plots of the spectra.
  • The Princeton spectra are an alternate reduction of the DR1 spectra. The 2d reductions are essentially identical, but the determination of redshifts and classifications uses an independent code doing direct chi-squared fitting of templates to spectra.
  • The SuperCOSMOS Science Archive holds the object catalog data extracted from scans of photographic Schmidt survey plates of the southern sky. The SSA catalog includes links to cross-identifications from the SDSS EDR and DR1, USNO-B and 2MASS final data release catalogs.

Last modified: Fri Jul 9 17:26:46 CDT 2004