VizieR

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

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/887/134
  Classification of Fermi blazar cand. from the 4FGL (Kang+, 2019)
ReadMe+ftp
2019ApJ...887..134K
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/887/134/table3The classification of Fermi blazar candidates of an unknown type (BCUs) (1312 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   [1/1312] Sequential running identifier (meta.record)
  4FGL (char) 4FGL Source Name (meta.id;meta.main)
  Cntpt (char) Counterpart name (meta.id)
  C4FGL (char) Optical class (always "bcu") (Note 1)   (meta.code.class)
  CRF (char) Random Forest classification ("bll": 835 occurrences or "fsrq": 477 occurrences) (Note 2)   (src.class)
  PBi-RF   [0/1] Probability BCU i belongs to BL Lac using RF (stat.fit.goodness)
  PFi-RF   [0/1] Probability BCU i belongs to FSRQ using RF (stat.fit.goodness)
  CSVM (char) Support Vector Machines classification ("bll": 858 occurrences or "fsrq": 454 occurrences) (Note 2)   (src.class)
  PBi-SVM   [0.016/1] Probability BCU i belongs to BL Lac using SVM (stat.fit.goodness)
  PFi-SVM   [0.0005/0.99] Probability BCU i belongs to FSRQ using SVM (stat.fit.goodness)
  CANN (char) Artificial neural network classification ("bll": 868 occurrences or "fsrq": 444 occurrences) (Note 2)   (src.class)
  PBi-ANN   [0.1/0.9] Probability BCU i belongs to BL Lac using ANN (stat.fit.goodness)
  PFi-ANN   [0.1/0.9] Probability BCU i belongs to FSRQ using ANN (stat.fit.goodness)
  Simbad  ask the Simbad data-base about this object (meta.ref.url)
  _RA deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
  _DE deg (i) Declination (J2000) from SIMBAD (not part of the original data) (pos.eq.dec;meta.main)

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 (i)indexed column
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usage  Display UCD1+    UCD1  
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