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VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:

  		 Target dimension:

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J/A+A/495/691
  Multifrequency catalogue of blazars, Roma-BZCAT (Massaro+, 2009)
ReadMe+ftp
2009A&A...495..691M
Similar Catalogs
Post annotation 		img(gal)
1.J/A+A/495/691/bzcat4(c)Multi-frequency catalogue of blazars (Roma-BZCAT) Version 4.1.1 (2012-August) (3149 rows)
2.J/A+A/495/691/bzcat1(c)Multi-frequency catalogue of blazars (Roma-BZCAT) Version 1.0 (2009-November) (old version) (2837 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)Seq   [1-3419] Sequential number (meta.record)
   (ALL)Name (char) Source name (based on J2000 position) (meta.id;meta.main)
   (ALL)RAJ2000 "h:m:s" (i) Right ascension (J2000.0) (pos.eq.ra;meta.main)
   (ALL)DEJ2000 "d:m:s" (i) Declination (J2000.0) (pos.eq.dec;meta.main)
   (ALL)z  Redshift (src.redshift)
   (ALL)u_z (char) [ >?] Uncertainty flag on Redshift (meta.code.error;src.redshift)
   (ALL)Rmag mag (n) R-band magnitude (phot.mag;em.opt.R)
   (ALL)Class (char) Source classification (Note G1)   (src.class)
  (1)F1.4 mJy Radio flux 1.4GHz (from NVSS or SUMSS) (phot.flux.density;em.radio.750-1500MHz)
  (1)F143 mJy Radio flux 143GHz (phot.flux.density;em.mm.100-200GHz)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
   (ALL)FX fW/m2 X-ray flux 0.1-2.4keV (in 10–12erg/cm2/s) (phot.flux;em.X-ray)
  (1)Fgam ph/cm2/s γ-ray flux 1-100GeV (Fermi) (phot.flux.density;em.gamma.hard)
   (ALL)Simbad (char) ask the Simbad data-base about this object (meta.ref.url)
  (2)n_Rmag (char) Comment on Rmag (other band) (meta.note)
  (2)FR mJy Radio flux, from NVSS or SUMSS (Note 2)   (phot.flux.density;em.opt.R)
  (2)r_FR (char) [fpsw] Origin of radio flux (Note 2)   (meta.ref;pos.frame)

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