GLXSDSSQS2 ivo://nasa.heasarc/glxsdssqs2 NASA/GSFC HEASARC Hutchings, Bianchi 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source A sample of ~60,000 objects from the combined Sloan Digital Sky Survey-Galaxy Evolution Explorer (SDSS-GALEX) database with UV-optical colors that should isolate QSOs in the redshift range 0.5 to 1.5 is discussed. The authors use SDSS spectra of a subsample of ~ 4,500 to remove stellar and galaxy contaminants in the sample to a very high level, based on the 7-band photometry. In their paper, they discuss the distributions of redshift, luminosity, and reddening of the 19,100 QSOs (~96%) that they estimate to be present in their final sample of 19,812 point sources. This latter catalog is available in the present table. This paper is based on archival data from the Galaxy Evolution Explorer (GALEX) which is operated for NASA by the California Institute of Technology under NASA contract NAS5-98034, and on data from the SDSS. This table was created by the HEASARC in March 2011 based on the electronic version of Table 2 from the reference paper which was obtained from the AJ web site. Some of the values for the name parameter in the HEASARC's implementation of this table were corrected in April 2018. This is a service provided by NASA HEASARC . 2010AJ....140.1987H https://heasarc.gsfc.nasa.gov/W3Browse/all/glxsdssqs2.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=glxsdssqs2& GET text/xml 180 99999 true 5.009469 -11.24887 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=glxsdssqs2 GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_glxsdssqs2&Action=More+Options&Action=Parameter+Search&ConeAdd=1 GALAXY CATALOG 0.0166666666666667 Optical UV public glxsdssqs2 GALEX/SDSS z=0.5-1.5 QSO Candidates Catalog name Source Designation meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable fmag GALEX FUV Band Magnitude mag phot.mag;em.UV.100-200nm double nullable fmag_error Uncertainty in FUV Band Magnitude mag stat.error;phot.mag;em.UV.100-200nm double nullable nmag GALEX NUV Band Magnitude mag phot.mag;em.UV.200-300nm double nullable nmag_error Uncertainty in NUV Band Magnitude mag stat.error;phot.mag;em.UV.100-200nm double nullable umag SDSS u Band Magnitude mag phot.mag;em.opt.U double nullable umag_error Uncertainty in umag mag stat.error;phot.mag;em.opt.U double nullable gmag SDSS g Band Magnitude mag phot.mag;em.opt.B double nullable gmag_error Uncertainty in gmag mag stat.error;phot.mag;em.opt.B double nullable imag_error Uncertainty in imag mag stat.error;phot.mag;em.opt.I double nullable zmag_error Uncertainty in zmag mag stat.error;phot.mag;em.opt double nullable bii Galactic Latitude degree pos.galactic.lat double nullable zmag SDSS z Band Magnitude mag phot.mag;em.opt double nullable lii Galactic Longitude degree pos.galactic.lon double nullable imag SDSS i Band Magnitude mag phot.mag;em.opt.I double nullable reddening Foreground Extinction Value mag phot.color.excess double nullable rmag SDSS r Band Magnitude mag phot.mag;em.opt.R double nullable rmag_error Uncertainty in rmag mag stat.error;phot.mag;em.opt.R double nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable