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/ApJS/262/18
  Spectral energy distributions for 4FGL blazars (Yang+, 2022)
ReadMe+ftp
2022ApJS..262...18Y
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJS/262/18/table1Blazars sample and the SEDs fitting results for 2709 blazars (2709 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 blazar name (JHHMM.m+DDMMa) (meta.id;meta.main)
  C1 (char) Classification, 4FGL-DR3 catalog (Note 1)   (meta.code.class)
  C2 (char) Classification, peak frequency (Note 2)   (meta.code.class)
  z  (n) [0/4.32] Redshift (src.redshift)
  r_z (char) References for z (see refs.dat file) (meta.ref;pos.frame)
  P1   [-0.3/-0.04] Parabolic fit, spectral curvature (Note 3)   (stat.fit.param)
  P2 [Hz] [12/18.7] Parabolic fit, synchrotron peak frequency, log(νp) (Note 3)   (em.freq;stat.max)
  P3 [mW/m2] [-13.4/-9.6] Parabolic fit, peak flux, log(νpfνp), in log(erg/s/cm2) units (Note 3)   (phot.flux;stat.max)
  logLp [10-7W] [34.6/47.8] Peak luminosity in log(erg/s) units (phys.luminosity;stat.max)
  logLR [10-7W] (n) [31.6/45.4] 1.4GHz radio luminosity in log(erg/s) units (phys.luminosity;em.radio)
  logLO [10-7W] (n) [34.8/47.4] 2.43+1014Hz optical luminosity in log(erg/s) units (phys.luminosity;em.opt)
  logLX [10-7W] (n) [39.9/47.8] 1keV X-ray luminosity in log(erg/s) units (phys.luminosity;em.X-ray)
  logLg [10-7W] [34.5/48.8] 1GeV γ-ray luminosity in log(erg/s) units (phys.luminosity;em.gamma)
  alpha-RO  (n) [0.01/0.9] Radio to optical effective spectral index (spect.index)
  alpha-OX  (n) [0.48/2.1] Optical to X-ray effective spectral index (spect.index)
  Simbad  ask the Simbad data-base about this object (meta.ref.url)
  NED  ask the NED data-base about this object (meta.ref.url)
  _RA deg (i) Positions from the 4FGL-DR3 catalog (IX/67) or from 4FGL (Abdollahi+ 2020, J/ApJS/247/33) for 7 sources or from 4FGL-DR2 for 4FGL J1242.4-2948 (right ascension part) (pos.eq.ra;meta.main)
  _DE deg (i) Positions from the 4FGL-DR3 catalog (IX/67) or from 4FGL (Abdollahi+ 2020, J/ApJS/247/33) for 7 sources or from 4FGL-DR2 for 4FGL J1242.4-2948 (declination part) (pos.eq.dec;meta.main)

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