UV photometry of GALEX QSO candidates : J/ApJ/664/53

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Authors : Atlee D.W. orcid , Gould A. (hide) , Gould A. et..al

VizieR DOI : 10.26093/cds/vizier.16640053
Bibcode : 2007ApJ...664...53A (ADS) (Simbad) (Objects)
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CDS Keywords : QSOs; Ultraviolet
UAT : Quasars, Ultraviolet astronomy

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Inserted into VizieR : 06-Oct-2009
Last modification : 28-Oct-2009

Photometric selection of QSO candidates from GALEX sources. (2007)

Keywords : quasars general

Abstract:We present a catalog of 36120 QSO candidates from the Galaxy Evolution Explorer (GALEX) Release Two (GR2) UV catalog and the USNO-A2.0 optical catalog. The selection criteria are established using known quasars from the Sloan Digital Sky Survey (SDSS). The SDSS sample is then used to assign individual probabilities to our GALEX USNO candidates. The mean probability is ~50% and would rise to ~65% if better morphological information than that from USNO were available to eliminate galaxies. The sample is ~40% complete for i<=19.1. Candidates are cross identified in 2MASS, FIRST, SDSS, and the XMM-Newton Slewing Survey (XMMSL1), whenever such counterparts exist. The present catalog covers the 8000deg^2^ of GR2 lying above ...(more)
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American Astronomical Society policies
GALEX records magnitudes in two bandpasses, the far-UV (FUV) and near-UV (NUV) filters. The FUV filter is characterized by {lambda}_eff_=1528{AA}, with a range of 1344-1786{AA}; the NUV filter has {lambda}_eff_=2271{AA}, with a range of 1771-2831{AA}. We select QSO candidates from GALEX GR2, which includes 7077 GALEX AIS pointings covering approximately 8000deg^2^ on the sky (http://galex.stsci.edu/GR2/)as well as ~350 Medium Imaging Survey (MIS) and ~100 Deep Imaging Survey (DIS) pointings.

  • I/252 : The USNO-A2.0 Catalogue (Monet+ 1998)
  • II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
  • VII/248 : Quasars and Active Galactic Nuclei (12th Ed.) (Veron+ 2006)
  • J/A+A/480/611 : XMM-Newton slew survey catalogue, XMMSL1 (Saxton+, 2008)
  • J/ApJS/173/185 : GALEX ultraviolet atlas of nearby galaxies (Gil de Paz+, 2007)
  • http://galex.stsci.edu/GR2 : GALEX Home Page

                


                

                    

                


                

                    

                


                

                    
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