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/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(c)*Catalog of quasar candidates (Note) (1095711 rows)
2.J/A+A/649/A81/all(c)*Catalog of all machine learning estimates (Note) (45469955 rows)
Help Xmatch is

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc)
   (ALL)KiDSDR4 (char) KiDSDR4 designation, KiDSDR4 JHHMMSS.sss+DDMMSS.ss ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc;arith)
   (ALL)RAJ2000 deg (i) [0/360] Centroid sky position right ascension (J2000) ((unassigned);(unassigned);(unassigned);(unassigned);arith)
   (ALL)DEJ2000 deg (i) Centroid sky position declination (J2000) (time.scale;(unassigned);arith.grad;(unassigned);arith)
   (ALL)rmag mag r-band GAaP magnitude with optimal MIN_APER (extinction corrected) ((unassigned);phys.veloc.orbital;arith.diff;stat.filling;(unassigned);(unassigned))
   (ALL)ClassStar  SExtractor star-galaxy classifier ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc)
   (ALL)Mask  9-band mask information ((unassigned);(unassigned);(unassigned);pos.eq.dec)
   (ALL)PGalaxy  Probability that the source is a galaxy ((unassigned);phys.veloc.orbital;arith.diff;phys.polarization.circular;meta.main)
   (ALL)PQSO  Probability that the source is a QSO ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
   (ALL)PStar  Probability that the source is a star ((unassigned);phys.veloc.orbital;arith.diff;phys.polarization.circular;meta.main)
   (ALL)Class (char) Object class with the highest probability, GALAXY, QSO or STAR ((unassigned);(unassigned);(unassigned);phys.atmol.sweight;meta.main)

ALL cols		    
 (i)indexed column
   (ALL)zph  Photometric redshift ((unassigned);phys.veloc.orbital;arith.diff;pos.parallax;meta.main)
   (ALL)e_zph  Uncertainty of photometric redshift ((unassigned);(unassigned);(unassigned);time.age;meta.main)
   (ALL)Subset (char) ML inference subset (Note 1)   ((unassigned);(unassigned);(unassigned);phys.veloc.orbital)

ALL cols		    
 (i)indexed column
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usage  Display UCD1+    UCD1  

The following problems were encountered in this VizieR run:
****Error execute query: UPDATE METAstat set nother=nother+1, tother=846499353 Where phase=3 and catid=36490081
**** 
**** --POSTGRES MSG db=0
**** Report from: stdb_pg,     Status: STDB_ERR 
****ERROR:  invalid page in block 0 of relation base/16403/6104 
****ERROR:  invalid page in block 0 of relation base/16403/6104 
****Error execute query: UPDATE METAstat set nother=nother+1, tother=846499353 Where phase=3 and catid=36490081
**** 
**** --POSTGRES MSG db=0
**** Report from: stdb_pg,     Status: STDB_ERR 
****ERROR:  invalid page in block 0 of relation base/16403/6104 
****ERROR:  invalid page in block 0 of relation base/16403/6104
If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR1190592.err (2026-10-28T10:42:33)
-3
-source=J/A+A/649/A81
-ref=VIZ6ae1d199122ac0
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