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/AJ/121/1872
  FIRST radio-selected QSOs (Helfand+, 2001)
ReadMe+ftp
2001AJ....121.1872H
Similar Catalogs
Post annotation 		img(gal)
1.J/AJ/121/1872/table2FIRST Variable Quasar Catalog (201 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)
  Link  Display the FIRST data (meta.ref)
  RAJ2000 "h:m:s" (i) FIRST radio Right Ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) FIRST radio Declination (J2000) (pos.eq.dec;meta.main)
  Obs1 yr Year of POSS-I observation (time.epoch)
  Obs2 yr Year of CCD observation (time.epoch)
  f_Bmag (char) [*] Indicates a source with too few CCD calibration stars to recalibrate the POSS-I magnitudes (meta.code.error)
  Bmag mag Extinction-corrected B band magnitude (phot.mag;em.opt.B)
  Omag mag Extinction-corrected POSS-I O band magnitude (phot.mag;em.opt.B)
  B-O mag The (B-O) color (phot.color)
  Rmag mag Extinction-corrected R band magnitude (phot.mag;em.opt.R)
  Emag mag Extinction-corrected POSS-I E band magnitude (phot.mag;em.opt.R)
  R-E mag The (R-E) color (phot.color)
  P20cm mJy The peak 20cm (1.5GHz) flux density (phot.flux.density;em.radio.1500-3000MHz)
  I20cm mJy The integrated 20cm (1.5GHz) flux density (phot.flux.density;em.radio.1500-3000MHz)
  z  Redshift (src.redshift)
  BMag mag The absolute B band magnitude (phys.magAbs;em.opt)
  logLum [mW/m2/Hz]Log of the radio luminosity in erg/cm2/s/Hz (Note 1)   (phys.luminosity;em.radio)
  logR  Log of the K-corrected 5GHz radio to 2500Å optical luminosity (Note 2)   (phot.flux;arith.ratio)
  Morph (char) Radio morphology (Note 3)   (src.morph.type)

ALL cols		    
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usage  Display UCD1+    UCD1  
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