VizieR

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

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/ApJ/943/167
  FSRQs & BL Lac objects from 4FGL blazar candidates (Kaur+, 2023)
ReadMe+ftp
2023ApJ...943..167K
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/943/167/table1The 1098 sources used for training data containing BL Lacs and Flat Spectrum Radio Quasars (1098 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. ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc)
  Type (char) Source type ("BL Lacs" or "FSRQ") ((unassigned);phys.veloc.orbital;arith.diff;phys.atmol.sweight;meta.main)
  4FGL (char) Fermi 4FGL catalog identifier (JHHMM.m+DDMM) ((unassigned);(unassigned);(unassigned);spect.line.veloc;arith)
  logFg [mW/m2] [-12.16/-9] Log Gamma-ray flux; erg/s/cm2 ((unassigned);(unassigned);(unassigned);phys.atmol.sWeight.nuclear;(unassigned);(unassigned))
  Gamma   [1.45/3.1] The Gamma-ray photon index ((unassigned);instr.calib;stat.min;phys.abund.Y;meta.main)
  Var   [-4/1.61] Year-over-year Gamma-ray variability index ((unassigned);(unassigned);(unassigned);pos.wcs.crpix;meta.main)
  Curve   [0.27/4.9] Significance of the curvature in Gamma-ray spectrum ((unassigned);(unassigned);(unassigned);phys.polarization.circular;meta.main)
  logFX/Fg [-] [-2.76/1.27] Log X-ray to Gamma-ray flux ((unassigned);phys.atmol.qn.J;arith.factor;meta.abstract;(unassigned);(unassigned);(unassigned))
  logFV/Fg [-] [-7.44/-2.66] Log V band to Gamma-ray flux (stat.fit.param;phys.atmol.qn.L;arith.grad;meta.abstract;(unassigned);(unassigned);(unassigned))
  W1-W2 mag [0.05/1.51] WISE (W1-W2) color index ((unassigned);instr.det.noise;stat.min;pos.healpix;(unassigned);(unassigned);(unassigned))
  W2-W3 mag [0.7/5.26] WISE (W2-W3) color index (instr.fov;meta.number;arith;pos.healpix;(unassigned);(unassigned);(unassigned))
  Simbad  ask the Simbad data-base about this object ((unassigned);(unassigned);(unassigned);pos.geocentric)
  NED  ask the NED data-base about this object ((unassigned);phys.veloc.orbital;arith.diff;pos.geocentric)
  _RA deg Right Ascension (J2000) from SIMBAD (not part of the original data) ((unassigned);phys.veloc.orbital;arith.diff;(unassigned);arith)
  _DE deg Declination (J2000) from SIMBAD (not part of the original data) ((unassigned);(unassigned);(unassigned);(unassigned);arith)

ALL cols		    
 (i)indexed column
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 Display your selection only Reset to default columns
usage  Display UCD1+    UCD1  

The following problems were encountered in this VizieR run:
****Error execute query: UPDATE METAstat set nother=nother+1, tother=846453774 Where phase=3 and catid=19430167
**** 
**** --POSTGRES MSG db=1
**** 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/VR430513.err (2026-10-27T22:02:53)
-3
-source=J/ApJ/943/167/table1
-ref=VIZ6ae11f8e691b1
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