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/A+A/602/A86
  Blazar candidates among Fermi/LAT 3FGL catalog (Lefaucheur+, 2017)
ReadMe+ftp
2017A&A...602A..86L
Similar Catalogs
Post annotation 		img(gal)
1.J/A+A/602/A86/table5(c)Sample of blazar candidates from unassociated 3FGL sources (595 rows)
2.J/A+A/602/A86/table7(c)Type assignation of blazar candidates (903 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. (meta.record)
   (ALL)3FGL (char) 3FGL source name, JHHMM.m+DDMM (Source_Name) (meta.id;meta.main)
   (ALL)GLON deg Galactic longitude (pos.galactic.lon)
   (ALL)GLAT deg Galactic latitude (pos.galactic.lat)
  (1)Flags  Flags (Note 1)   (meta.code.error)
  (1)logsigmac [-] Discriminant parameter normalised curvature (NormalizedCurvature) (Note 2)   (stat.fit.goodness)
   (ALL)logTS [-] Discriminant parameter normalised variability (NormalizedVariability) (Note G2)   (src.var.index)
   (ALL)HR23  Discriminant parameter HR23 hardness ratio (Note G3)   (phot.flux;arith.ratio)
   (ALL)HR34  Discriminant parameter HR34 hardness ratio (Note G3)   (phot.flux;arith.ratio)
  (1)HR23-HR34  Discriminant parameter curvature, HR23-HR34 (Curvature) (phot.flux;arith.ratio)
  (1)lambda  Discriminant parameter lambda (Lambda) (Note 3)   (stat.param)

ALL cols		    
 (i)indexed column
   (ALL)zetaBDT  Output parameter zeta from BDT decision (zeta_BDT) (Note G5)   (stat.fit.param)
   (ALL)zetaMLP  Output parameter zeta from MLP decision (zeta_MLP) (Note G5)   (stat.fit.param)
   (ALL)Type (char) Blazar type (BlazarType) (Note G6)   (src.class)
  (1)SP16 (char) [yes/no ] In Saz Parkinson et al. (2016, Cat. J/ApJ/820/8) (SazParkinson2016) (meta.code)
  (1)Mi12 (char) [yes/no ] In Mirabal et al. (2012, Cat. J/MNRAS/424/L64) (Mirabal_2012) (meta.code)
  (1)A12 (char) [yes/no ] In Ackermann et al. (2012, Cat. J/ApJ/753/83) (Ackermann_2012) (meta.code)
  (1)Ma13 (char) [yes/no ] In Massaro et al. (2013, Cat. J/ApJS/207/4 and J/ApJS/206/13) (Massaro_2013) (meta.code)
  (1)D14 (char) [yes/no ] In Doert & Errando (2014, Cat. J/ApJ/782/41) (Doert_2014) (meta.code)
   (ALL)Simbad (char) ask the Simbad data-base about this object (meta.ref.url)
   (ALL)_RA.icrs deg (n)(i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
   (ALL)_DE.icrs deg (n)(i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  (2)Class (char) [BCU UnId] Classification (CLASS) (Note 1)   (meta.code)
  (2)gamma  Spectral index of the power law hypothesis (PowerLaw_Index) (spect.index)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (2)logEp [-] Discriminant parameter pivot energy (which is somewhat correlated to the position of the high energy peak) (Pivot_Energy) (em.energy)

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