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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/A+A/649/A81
  KiDSDR4 QSOs photometric redshifts catalog (Nakoneczny+, 2021)
ReadMe+ftp
2021A&A...649A..81N
Similar Catalogs
Post annotation 		img(gal)
1.J/A+A/649/A81/qsos*Catalog of quasar candidates (Note) (1095711 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)
  KiDSDR4 (char) KiDSDR4 designation, KiDSDR4 JHHMMSS.sss+DDMMSS.ss (meta.id;meta.main)
  RAJ2000 deg (i) [0/360] Centroid sky position right ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 deg (i) Centroid sky position declination (J2000) (pos.eq.dec;meta.main)
  rmag mag r-band GAaP magnitude with optimal MIN_APER (extinction corrected) (phot.mag;em.opt.R)
  ClassStar  SExtractor star-galaxy classifier (meta.id)
  Mask  9-band mask information (meta.code)
  PGalaxy  Probability that the source is a galaxy (stat.fit.goodness)
  PQSO  Probability that the source is a QSO (stat.fit.goodness)
  PStar  Probability that the source is a star (stat.fit.goodness)
  Class (char) Object class with the highest probability, GALAXY, QSO or STAR (src.class)
  zph  Photometric redshift (src.redshift)
  e_zph  Uncertainty of photometric redshift (stat.error)
  Subset (char) ML inference subset (Note 1)   (meta.note)

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