VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

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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)
ReadMe+ftp
2009ApJS..180...67R
Similar Catalogs
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)

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)
  Seq  (i) Unique catalog number (meta.id;meta.main)
  SDSS (char) SDSS name (JHHMMSS.ss+DDMMSS.s) (meta.id)
  zph  Photometric redshift; see Weinstein et al., 2004ApJS..155..243W (src.redshift)
  zph.L  Lower limit of zphot (src.redshift.phot)
  zph.U  Upper limit of zphot (src.redshift.phot)
  zpprob  Photometric redshift range probability (stat.probability)
  umag mag u band PSF ubercalibrated asinh magnitude (Note 1)   (phot.mag;em.opt.U)
  e_umag mag Error in umag (stat.error;phot.mag;em.opt.U)
  gmag mag g band PSF ubercalibrated asinh magnitude (Note 1)   (phot.mag;em.opt.B)
  e_gmag mag Error in gmag (stat.error;phot.mag;em.opt.B)

ALL cols		    
 (i)indexed column
  rmag mag r band PSF ubercalibrated asinh magnitude (Note 1)   (phot.mag;em.opt.R)
  e_rmag mag Error in rmag (stat.error;phot.mag;em.opt.R)
  imag mag i band PSF ubercalibrated asinh magnitude (Note 1)   (phot.mag;em.opt.I)
  e_imag mag Error in imag (stat.error;phot.mag;em.opt.I)
  zmag mag z band PSF ubercalibrated asinh magnitude (Note 1)   (phot.mag;em.opt.I)
  e_zmag mag Error in zmag (stat.error;phot.mag;em.opt.I)
  E(B-V) mag The (B-V) extinction (Note 2)   (phot.color.excess)
  c mag Concentration for star/galaxy separation (Note 3)   (phys.size;arith.ratio)
  F20cm mJy (n) the 20cm (1.5GHz) flux density (phot.flux.density;em.radio.1500-3000MHz)
  FX ct/s (n) RASS full-band count rate (0.1-2keV) (phot.count;em.X-ray)
  pm mas/yr (n) Proper motion (pos.pm)
  mov   [-1/1] Flag to indicate possible moving object (Note 4)   (meta.code)
  fz   [0/1] Full z range flag, 95% star prior (meta.code)

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 (meta.code)
  mz   [0/1] Mid z range flag (2.2<z<3.5), 98% star prior (meta.code)
  hz   [0/1] High z range flag (z≥3.5), 98% star prior (meta.code)
  uv   [0/1] UV-excess flag, 88% star prior; see Paper I, Cat. J/ApJS/155/257 (meta.code)
  log(q) [-] Kernel density estimate (KDE) quasar probability (stat.probability)
  log(s) [-] Kernel density estimate (KDE) star probability (stat.probability)
  good   [-6/6] Quality flag (Note 5)   (meta.code.qual)
  Class (char) Previous catalog object classification (Note 6)   (meta.code.class;src.class;meta.table)
  z  (n) Previous catalog object redshift (src.redshift)
  Sloan  Display the SDSS data from the SDSS site (meta.ref.url)
  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)

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