VizieR

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VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
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J/ApJ/657/706
  EGRET blazar gamma-ray spectrum (Nandikotkur+, 2007)
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img(gal)
1.J/ApJ/657/706/table2(c)Photon Spectral index (30MeV-10GeV), average flux (>100MeV) and Log(synchrotron peak frequency) of blazars detected by EGRET (98 rows)
2.J/ApJ/657/706/table3Gamma-ray photon spectral index (30MeV-10GeV) and flux (>100MeV) of blazars that were bright and were observed multiple times by EGRET (151 rows)

 
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)Name (char) (i) Source name (HHMM+DDd or HHMM+DDMM) QSO BHHMM+DDd in Simbad (meta.id;meta.main)
  (1)n_Name (char) [*] 0804+499 also named 0809+483 (meta.note)
  (1)u_Name (char) [?] Possible EGRET identification? (meta.code.error)
  (1)RAJ2000 deg (i) Right Ascension decimal degrees (J2000) (Note 2)   (pos.eq.ra;meta.main)
  (1)DEJ2000 deg (i) Declination in decimal degrees (J2000) (Note 2)   (pos.eq.dec;meta.main)
   (ALL)alpha  (n) Spectral index (Note G1)   (spect.index)
   (ALL)e_alpha  (n) Uncertainty in alpha (stat.error;pos.eq.ra)
  (1)f_alpha (char) [e] alpha during a flare (Note 4)   (meta.code)
   (ALL)Flux 10-4/m2/sAverage flux at >100MeV (Note G2)   (phot.flux.density;em.gamma.hard)
   (ALL)e_Flux 10-4/m2/sUncertainty in Flux (Note G2)   (stat.error;phot.flux)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)lognu [Hz] (n) Log of the synchrotron peak frequency (Note 6)   (em.freq;stat.max)
  (1)e_lognu [Hz] (n) Uncertainty in lognu (stat.error)
  (1)M (char) [Y/N] Multiple observations? (Note 7)   (meta.code)
  (1)Class (char) Classification (Note 8)   (meta.code.class)
  (1)Simbad (char) ask the Simbad data-base about this object
   (ALL)OName (char) Other name (meta.id)
  (2)Dates (char) Start date(s) (time.start)
  (2)Period (char) Viewing periods pooled (meta.note)
  (2)Fig3 (char) Graph label in Figure 3 (Note 2)   (meta.bib.fig)
  (2)f_Fig3 (char) [b] Fraction of the viewing period (Note 3)   (meta.code)
  (2)sigma  (n) Detection significance (stat.fit.goodness)

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