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Looking for catalogs ..
  VLA FIRST survey quasar radio emission (Wadadekar+, 1999)
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1.J/AJ/118/1435/table2FIRST detections of quasars (436 rows)

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)
  Name (char) IAU designation (Note)   (;meta.main)
  Link  FIRST source(s) matching the IAU Name (meta.ref)
  Sel (char) [ORCXU ] Selection technique (Note)   (meta.code)
  Pmag mag (n) Photographic magnitude (phot.mag;em.opt.B)
  F1.4GHz mJy 1.4GHz peak radio flux (phot.flux.density;
  z  Redshift (src.redshift)
  Sep arcsec Separation with the FIRST source (pos.angDistance)
  Names (char) Alternative designation (
  Radio (char) Recent radio detection (meta.ref)

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(n) indicates a possible blank or NULL column(i)indexed column
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usage  Display UCD1+    UCD1  
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