VizieR

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NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
VII/243
  SDSS quasar catalog. III. (Schneider+, 2005)
ReadMe+ftp
2005AJ....130..367S
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This catalogue is obsoleted by 7252
Post annotation 		img(gal)
1.VII/243/dr3qsoThe SDSS quasar catalog III (46420 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  SDSS (char) Object Designation (Note 1)   
  RAJ2000 deg (i) Right Ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
  DEJ2000 deg (i) Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)
  z  Redshift
  umag mag SDSS u band PSF magnitude (Note 2)   
  e_umag mag Error in umag
  gmag mag SDSS g band PSF magnitude (Note 2)   
  e_gmag mag Error in gmag
  rmag mag SDSS r band PSF magnitude (Note 2)   
  e_rmag mag Error in rmag

ALL cols		    
 (i)indexed column
  imag mag SDSS i band PSF magnitude (Note 2)   
  e_imag mag Error in imag
  zmag mag SDSS z band PSF magnitude (Note 2)   
  e_zmag mag Error in zmag
  Au mag Galactic absorption in u band (Note 3)   
  logHI [cm-2] Log of the Galactic HI column density
  F20cm mag FIRST 20cm peak flux density in AB mags (Note 4)   
  w_F20cm  The S/N ratio for FIRST flux
  sepR arcsec The SDSS/FIRST separation
  fRo   [0,1] FIRST flux at optical position but no source in FIRST catalog flag (Note 5)   
  fR1  FIRST source a distance between 2"-30" from the optical position (Note 6)   
  logX [ct/s] (n) RASS BSC/FSC full band count rate (Note 7)   
  w_logX  The S/N ratio for RASS count rate

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  sepX arcsec The SDSS/RASS separation
  Jmag mag (n) The 2MASS J magnitude (Note 8)   
  e_Jmag mag Error in Jmag
  Hmag mag (n) The 2MASS H magnitude (Note 8)   
  e_Hmag mag Error in Hmag
  Kmag mag (n) The 2MASS K magnitude (Note 8)   
  e_Kmag mag Error in Kmag
  sepH arcsec The SDSS/2MASS separation
  iMAG mag Absolute i magnitude (Note 9)   
  Mph   [0,1] The morphology flag (Note 10)   
  S1   [0,1] The SCIENCEPRIMARY flag (Note 11)   
  mode   [1,3] SDSS mode (blends, overlapping scans) flag (Note 12)   
  tFlagB  Target selection flag (BEST)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Lz   [0,1] Low-z Quasar (color selection only) target flag (Note 13)   
  Hz   [0,1] High-z Quasar (color selection only) target flag (Note 13)   
  fR   [0,1] FIRST target flag (Note 13)   
  fX   [0,1] ROSAT target flag (Note 13)   
  fS   [0,1] Serendipity target flag (Note 13)   
  f*   [0,1] Star target flag (Note 13)   
  fG   [0,1] Galaxy target flag (Note 13)   
  run  Imaging run number for photometric measurements
  MJD-Im  Modified Julian Date of imaging obs.
  MJD-Sp  Modified Julian Date of spectroscopic obs.
  Pnum  Spectroscopic Plate Number
  Fnum  Spectroscopic Fiber Number
  rerun  SDSS Photometric Processing Rerun Number

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Cam  SDSS Camera Column Number
  Frame  SDSS Frame Number
  Obj  SDSS Object Number
  Ch  SDSS Chunk Number
  tFlagT  Target selection flag (TARGET)
  uPSF mag (n) SDSS (TARGET) u band PSF magnitude (Note 14)   
  e_uPSF mag Error in uPSF
  gPSF mag (n) SDSS (TARGET) g band PSF magnitude (Note 14)   
  e_gPSF mag Error in gPSF
  rPSF mag (n) SDSS (TARGET) r band PSF magnitude (Note 14)   
  e_rPSF mag Error in rPSF
  iPSF mag (n) SDSS (TARGET) i band PSF magnitude (Note 14)   
  e_iPSF mag Error in iPSF
  zPSF mag (n) SDSS (TARGET) z band PSF magnitude (Note 14)   
  e_zPSF mag Error in zPSF
  Prev (char) Object name if previously published (Note 15)   
  2MASS  Display the 2MASS data
  X  Display the X-ray sources closer than 1'
  Radio  Display the radio sources closer than 1'

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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