VizieR

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VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:
Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
J/ApJS/180/67
  Photometric selection of quasars from SDSS. II. (Richards+, 2009)
Post annotation
img(gal)
1.J/ApJS/180/67/catalogCatalog of quasar candidates from non-parametric Bayes classifier kernel density estimate (NBC KDE) (tables 1 and 3 of paper) (1172157 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. ((unassigned))
  Seq  (i) Unique catalog number ((unassigned);(unassigned))
  SDSS (char) SDSS name (JHHMMSS.ss+DDMMSS.s) linkRole{SDSS-DR6 data} ((unassigned))
  zph  Photometric redshift; see Weinstein et al., 2004ApJS..155..243W ((unassigned))
  zph.L  Lower limit of zphot ((unassigned))
  zph.U  Upper limit of zphot ((unassigned))
  zpprob  Photometric redshift range probability ((unassigned))
  umag mag u band PSF ubercalibrated asinh magnitude (Note 1)   ((unassigned);(unassigned))
  e_umag mag Error in umag ((unassigned);(unassigned);(unassigned))
  gmag mag g band PSF ubercalibrated asinh magnitude (Note 1)   ((unassigned);(unassigned))
  e_gmag mag Error in gmag ((unassigned);(unassigned);(unassigned))

ALL cols
    
 (i)indexed column
  rmag mag r band PSF ubercalibrated asinh magnitude (Note 1)   ((unassigned);(unassigned))
  e_rmag mag Error in rmag ((unassigned);(unassigned);(unassigned))
  imag mag i band PSF ubercalibrated asinh magnitude (Note 1)   ((unassigned);(unassigned))
  e_imag mag Error in imag ((unassigned);(unassigned);(unassigned))
  zmag mag z band PSF ubercalibrated asinh magnitude (Note 1)   ((unassigned);(unassigned))
  e_zmag mag Error in zmag ((unassigned);(unassigned);(unassigned))
  E(B-V) mag The (B-V) extinction (Note 2)   ((unassigned))
  c mag Concentration for star/galaxy separation (Note 3)   ((unassigned);(unassigned))
  F20cm mJy (n) the 20cm (1.5GHz) flux density ((unassigned);(unassigned))
  FX ct/s (n) RASS full-band count rate (0.1-2keV) ((unassigned);(unassigned))
  pm mas/yr (n) Proper motion ((unassigned))
  mov   [-1/1] Flag to indicate possible moving object (Note 4)   ((unassigned))
  fz   [0/1] Full z range flag, 95% star prior ((unassigned))

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  lz   [0/1] Low z range flag (z<=2.2), 98% star prior ((unassigned))
  mz   [0/1] Mid z range flag (2.2<z<3.5), 98% star prior ((unassigned))
  hz   [0/1] High z range flag (z>=3.5), 98% star prior ((unassigned))
  uv   [0/1] UV-excess flag, 88% star prior; see Paper I, Cat. J/ApJS/155/257 ((unassigned))
  log(q) [-] Kernel density estimate (KDE) quasar probability ((unassigned))
  log(s) [-] Kernel density estimate (KDE) star probability ((unassigned))
  good   [-6/6] Quality flag (Note 5)   ((unassigned))
  Class (char) Previous catalog object classification (Note 6)   ((unassigned);(unassigned);(unassigned))
  z  (n) Previous catalog object redshift ((unassigned))
  Sloan  Display the SDSS data from the SDSS site ((unassigned))
  RAJ2000 deg (i) Right Ascension in decimal degrees (J2000) ((unassigned);(unassigned))
  DEJ2000 deg (i) Declination in decimal degrees (J2000) ((unassigned);(unassigned))

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
Adapt form
Display your selection only Reset to default columns
usage  Display UCD1+    UCD1  


The following problems were encountered in this VizieR run:
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If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR3828283.err (2026-08-11T22:25:58)
-3
-source=J/ApJS/180/67
-ref=VIZ6a7ba1763a6a3b
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