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. ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc)
  Link  Display the FIRST data ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc.dispersion)
  RAJ2000 "h:m:s" FIRST radio Right Ascension (J2000) ((unassigned);(unassigned);(unassigned);(unassigned);arith)
  DEJ2000 "d:m:s" FIRST radio Declination (J2000) ((unassigned);(unassigned);(unassigned);(unassigned);arith)
  Obs1 yr Year of POSS-I observation ((unassigned);(unassigned);(unassigned);pos.centroid;meta.main)
  Obs2 yr Year of CCD observation ((unassigned);(unassigned);(unassigned);pos.centroid;meta.main)
  f_Bmag (char) [*] Indicates a source with too few CCD calibration stars to recalibrate the POSS-I magnitudes ((unassigned);(unassigned);(unassigned);pos.galactic.lon)
  Bmag mag Extinction-corrected B band magnitude ((unassigned);phys.veloc.orbital;arith.diff;stat.filling;(unassigned);(unassigned))
  Omag mag Extinction-corrected POSS-I O band magnitude ((unassigned);phys.veloc.orbital;arith.diff;stat.filling;(unassigned);(unassigned))
  B-O mag The (B-O) color ((unassigned);phys.veloc.orbital;arith.diff;pos.healpix)
  Rmag mag Extinction-corrected R band magnitude ((unassigned);phys.veloc.orbital;arith.diff;stat.filling;(unassigned);(unassigned))
  Emag mag Extinction-corrected POSS-I E band magnitude ((unassigned);phys.veloc.orbital;arith.diff;stat.filling;(unassigned);(unassigned))
  R-E mag The (R-E) color ((unassigned);phys.veloc.orbital;arith.diff;pos.healpix)
  P20cm mJy The peak 20cm (1.5GHz) flux density ((unassigned);phys.veloc.orbital;arith.diff;phys.atmol.sWeight.nuclear;(unassigned);(unassigned))
  I20cm mJy The integrated 20cm (1.5GHz) flux density (time.equinox;(unassigned);arith.factor;phys.atmol.sWeight.nuclear;(unassigned);(unassigned))
  z  Redshift ((unassigned);phys.veloc.orbital;arith.diff;pos.parallax;meta.main)
  BMag mag The absolute B band magnitude ((unassigned);(unassigned);(unassigned);(unassigned);(unassigned);(unassigned))
  logLum [mW/m2/Hz]Log of the radio luminosity in erg/cm2/s/Hz (Note 1)   ((unassigned);(unassigned);(unassigned);(unassigned);stat.interval;(unassigned))
  logR  Log of the K-corrected 5GHz radio to 2500Å optical luminosity (Note 2)   ((unassigned);phys.veloc.orbital;arith.diff;meta.abstract;instr.offset)
  Morph (char) Radio morphology (Note 3)   ((unassigned);(unassigned);(unassigned);pos.angDistance;meta.main)

ALL cols		    
 (i)indexed column
Adapt form
 Display your selection only Reset to default columns
usage  Display UCD1+    UCD1  

The following problems were encountered in this VizieR run:
****Error execute query: UPDATE METAstat set nother=nother+1, tother=846534974 Where phase=3 and catid=51211872
**** 
**** --POSTGRES MSG db=1
**** Report from: stdb_pg,     Status: STDB_ERR 
****ERROR:  invalid page in block 0 of relation base/16403/6104 
****ERROR:  invalid page in block 0 of relation base/16403/6104
If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR3395512.err (2026-10-28T20:36:13)
-3
-source=J/AJ/121/1872
-ref=VIZ6ae25cbe33cfb8
elapse time 1