VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

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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/MNRAS/452/2553
  Sample of foreground-background quasar pairs (Johnson+, 2015)
ReadMe+ftp
2015MNRAS.452.2553J
Similar Catalogs
Post annotation 		img(gal)
1.J/MNRAS/452/2553/table1Summary of quasar and absorption properties (247 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)
  Name (char) Foreground QSO name (JHHMM+DDMM) (meta.id;meta.main)
  RAJ2000 "h:m:s" (i) Foreground QSO Right ascension (J2000) (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Foreground QSO Declination (J2000) (pos.eq.dec;meta.main)
  z  Foreground QSO redshift (Note 1)   (src.redshift)
  logLbol [10-7W] Bolometric luminosity (phys.luminosity)
  dtheta arcsec Angular separation between the foreground and background quasars (pos.angDistance)
  d kpc Distance Projected distance between the foreground and background quasars (pos.distance)
  l_Wr(2796) (char) Limit flag on Wr(2796) (Note 2)   (meta.code.error)
  Wr(2796) 0.1nm Rest-frame equivalent width of MgII (2796) (spect.line.eqWidth)
  e_Wr(2796) 0.1nm (n) rms uncertainty on Wr(2796) (stat.error)
  dv km/s (n) Velocity difference between the foreground and background quasars (phys.veloc;arith.diff)
  Ref  Reference (Note 3)   (meta.ref;pos.frame)

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