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VII/260
 The SDSS-DR7 quasar catalog (Schneider+, 2010)
Post annotation
img(gal)
1.VII/260/dr7qsoThe SDSS quasar catalog V, DR7 (table2 of the paper) (105783 rows)

 
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) SDSS DR7 object designation (1) (Note)   (meta.id;meta.main)
  z  SDSS redshift (src.redshift)
  umag mag (n) BEST SDSS u band PSF magnitude (Note 2)   (phot.mag;em.opt.U)
  e_umag mag (n) Error in umag (stat.error;phot.mag;em.opt.U)
  gmag mag (n) BEST SDSS g band PSF magnitude (Note 2)   (phot.mag;em.opt.B)
  e_gmag mag (n) Error in gmag (stat.error;phot.mag;em.opt.B)
  rmag mag (n) BEST SDSS r band PSF magnitude (Note 2)   (phot.mag;em.opt.R)
  e_rmag mag (n) Error in rmag (stat.error;phot.mag;em.opt.R)
  imag mag (n) BEST SDSS i band PSF magnitude (Note 2)   (phot.mag;em.opt.I)
  e_imag mag (n) Error in imag (stat.error;phot.mag;em.opt.I)

ALL cols
    
(n) indicates a possible blank or NULL column  
  zmag mag (n) BEST SDSS z band PSF magnitude (Note 2)   (phot.mag;em.opt.I)
  e_zmag mag (n) Error in zmag (stat.error;phot.mag;em.opt.I)
  Au mag Galactic extinction in u filter (Note 3)   (phys.absorption)
  logHI [cm-2] Log of Galactic HI column density (phys.columnDensity;pos.galactic)
  F20cm mag (n) FIRST 20cm peak flux density (Note 4)   (phot.flux.density;em.radio.750-1500MHz)
  w_F20cm  Signal-to-Noise ratio for F20cm (stat.weight)
  sepR arcsec SDSS/FIRST separation (pos;arith.diff)
  logX [ct/s] (n) RASS BSC/FSC full band count rate (Note 5)   (phot.count;em.X-ray)
  w_logX  Signal-to-Noise ratio for logX (stat.weight)
  sepX arcsec SDSS/RASS separation (pos;arith.diff)
  Jmag mag (n) 2MASS J band magnitude (Note 6)   (phot.mag;em.IR.J)
  e_Jmag mag (n) Error in Jmag (stat.error;phot.mag;em.IR.J)
  Hmag mag (n) 2MASS H band magnitude (Note 6)   (phot.mag;em.IR.H)

ALL cols
    
(n) indicates a possible blank or NULL column  
  e_Hmag mag (n) Error in Hmag (stat.error;phot.mag;em.IR.H)
  Kmag mag (n) 2MASS KS band magnitude (Note 6)   (phot.mag;em.IR.K)
  e_Kmag mag (n) Error in Kmag (stat.error;phot.mag;em.IR.K)
  sepIR arcsec SDSS/2MASS separation (pos;arith.diff)
  f2M   [0/26] 2MASS flags (Note 7)   (meta.code.error)
  iMAG mag Absolute SDSS i band magnitude (Note 8)   (phys.magAbs;em.opt.I)
  D(g-i) mag (n) Offset of quasar (g-i) from distribution (g-i) mode (Note 9)   (stat.fit.residual)
  Mph   [0/1] Morphology flag (1=extended source) (src.class.starGalaxy)
  S1   [0/1] SCIENCEPRIMARY flag (1=SCIENCEPRIMARY) (meta.code)
  mode   [0/3] SDSS MODE flag for blends, overlapping scans (Note 10)   (meta.code.class)
  utf   [0/1] Uniform target selection flag (Note 11)   (meta.code)
  TflagB  BEST target selection flag (hexadecimal) (meta.code)
  Lz   [0/1] Low-z Quasar, color selection only, target flag (1=targeted as Low-z Quasar) (meta.code)

ALL cols
    
(n) indicates a possible blank or NULL column  
  Hz   [0/1] High-z Quasar, color selection only, target flag (1=targeted as High-z Quasar) (meta.code)
  fR   [0/1] FIRST target flag (1=targeted) (meta.code)
  fX   [0/1] ROSAT target flag (1=targeted) (meta.code)
  fS   [0/1] Serendipity target flag (1=targeted) (meta.code)
  f*   [0/1] Star target flag (1=targeted) (meta.code)
  fG   [0/1] Galaxy target flag (1=targeted) (meta.code)
  run  SDSS imaging run number for photometric measurements (meta.id)
  MJD-im d Modified Julian Date of imaging observation (time.epoch)
  MJD-sp d Modified Julian Date of spectroscopic observation (time.epoch)
  Plate  Spectroscopic Plate number (meta.id;instr.plate)
  Fiber  Spectroscopic Fiber number (meta.id)
  rerun  SDSS Photometric Processing Rerun number (meta.id)
  Cam   [1/6] SDSS Camera Column number (meta.id;instr)

ALL cols
    
(n) indicates a possible blank or NULL column  
  Frame  SDSS Frame number (obs.field)
  obj  SDSS Object number (meta.id)
  Tflag  TARGET target selection flag (hexadecimal) (meta.code)
  LzT   [0/1] Low-z Quasar, color selection only, target flag (1=targeted as Low-z Quasar) (meta.code)
  HzT   [0/1] High-z Quasar, color selection only, target flag (1=targeted as High-z Quasar) (meta.code)
  fRT   [0/1] FIRST target flag (1=targeted) (meta.code)
  fXT   [0/1] ROSAT target flag (1=targeted) (meta.code)
  fST   [0/1] Serendipity target flag (1=targeted) (meta.code)
  f*T   [0/1] Star target flag (1=targeted) (meta.code)
  fGT   [0/1] Galaxy target flag (1=targeted) (meta.code)
  uTmag mag (n) TARGET SDSS u band PSF magnitude (Note 2)   (phot.mag;em.opt.U)
  e_uTmag mag (n) Error in uTmag (stat.error;phot.mag)
  gTmag mag (n) TARGET SDSS g band PSF magnitude (Note 2)   (phot.mag;em.opt.B)

ALL cols
    
(n) indicates a possible blank or NULL column  
  e_gTmag mag (n) Error in gTmag (stat.error;phot.mag)
  rTmag mag (n) TARGET SDSS r band PSF magnitude (Note 2)   (phot.mag;em.opt.R)
  e_rTmag mag (n) Error in rTmag (stat.error;phot.mag)
  iTmag mag (n) TARGET SDSS i band PSF magnitude (Note 2)   (phot.mag;em.opt.I)
  e_iTmag mag (n) Error in iTmag (stat.error;phot.mag)
  zTmag mag (n) TARGET SDSS z band PSF magnitude (Note 2)   (phot.mag;em.opt.I)
  e_zTmag mag (n) Error in zTmag (stat.error;phot.mag)
  prevID (char) Previously published name (Note 12)   (meta.id)
  BH  Display the black hole mass estimates from Shen et al. 2008, Cat. J/ApJ/680/169 (meta.ref.url)
  DR7  Display the detailed photometry from SDSS-DR7 (Cat. II/294) (meta.ref.url)
  2MASS  Display the 2MASS data (meta.ref.url)
  X  Display the X-ray sources closer than 1' (meta.ref.url)
  Radio  Display the radio sources closer than 1' (meta.ref.url)
  RAJ2000 deg Right Ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
  DEJ2000 deg Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)

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