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/913/120
  4FGL blazars with Gaia DR2 data (Zeng+, 2021)
ReadMe+ftp
2021ApJ...913..120Z
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/913/120/table1Sample for 1124 blazars (1124 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)
  4FGL (char) 4FGL name (JHHMM.m+DDMM) (meta.id;meta.main)
  z   [0.01/3.8] Spectroscopic redshift from the 4LAC (Ajello+, 2020, J/ApJ/892/105) (src.redshift)
  S25GeV mW/m2 [8.4e-13/1.2e-9] The 25GeV energy flux; in erg/s/cm2 units (phot.flux.density;em.gamma.hard)
  Gamma   [1.5/3.2] Power-law spectral index in the 100MeV to 100GeV energy band (spect.index;em.gamma)
  Class (char) Classification (Note 1)   (src.class)
  Gaia  Gaia DR2 counterpart identifier (meta.id)
  Gmag mag [12.8/21.5] Gaia DR2 G passband band magnitude (phot.mag;em.opt)
  BPmag mag (n) [12.9/21.3] Gaia DR2 Blue passband magnitude (phot.mag;em.opt.B)
  RPmag mag (n) [12.2/20.4] Gaia DR2 Red passband magnitude (phot.mag;em.opt.R)
  fnu mJy [0.009/24.7] Gaia DR2 G passband flux density (phot.flux.density;em.opt)
  fnuBP mJy (n) [0.01/24] Gaia DR2 Blue passband flux density (phot.flux.density;em.opt)
  fnuRP mJy (n) [0.01/32.1] Gaia DR2 Red passband flux density (phot.flux.density;em.opt)
  alpha   [-0.8/4.1] Optical spectral index (Note 2)   (spect.index;em.opt)
  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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(n) indicates a possible blank or NULL column(i)indexed column
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