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/ApJ/776/136
  QPQ VI. HI absorption of z~2 quasars (Prochaska+, 2013)
ReadMe+ftp
2013ApJ...776..136P
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/776/136/qpq6(c)Quasars Probing Quasars VI (QPQ6) redshifts and HI measurements (tables 1, 3 and 4) (646 rows)
2.J/ApJ/776/136/table2(c)Journal of observations (105 rows)
Help Xmatch is

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortJoin tables
more join
Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. ((unassigned);phys.veloc.orbital;arith.diff;phys.veloc)
  (1)f/g-Q (char) Foreground quasar identifier ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc;arith)
  (1)L912 [cW/m2/nm](n) [28/32] Log of 912Å luminosity; erg/s/cm2/Å (Note 2)   ((unassigned);(unassigned);(unassigned);(unassigned);(unassigned);(unassigned))
  (1)Lbol [mW/m2] (n) [45/48] Log of bolometric luminosity; erg/s/cm2 (Note 2)   ((unassigned);(unassigned);(unassigned);(unassigned))
   (ALL)b/g-Q (char) Background quasar identifier ((unassigned);phys.veloc.orbital;arith.diff;src.class.color)
  (1)zbg   [1.7/4.9] Background redshift ((unassigned);(unassigned);(unassigned);pos.parallax;arith.diff;meta.main)
   (ALL)Nq  (n)Number of foreground quasars associated in QPQ6 ((unassigned);(unassigned);(unassigned);src.var)
  (1)b kpc [31/999] Impact parameter R{perp} ((unassigned);(unassigned);(unassigned);phys.polarization;meta.main)
  (1)gUV  (n) [2/17964] Enhancement in flux relative to the extragalactic UV background (Note 2)   ((unassigned);phys.veloc.orbital;arith.diff;meta.abstract;instr.offset)
   (ALL)Inst (char) Source spectrum (Note G1)   ((unassigned);(unassigned);(unassigned);spect.line.veloc;meta.code.qual)
  (1)Lines (char) Emission lines used in zem ((unassigned);(unassigned);(unassigned);spect.line.veloc;phys.angArea;meta.main)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)zfg   [1.6/4.5] Emission line derived redshift ((unassigned);(unassigned);(unassigned);pos.parallax;arith.diff;meta.main)
  (1)e_zfg km/s [272/794] Uncertainty in zfg ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  (1)S/N   [6/205] Signal-to-noise per rest-frame Å (Note 3)   ((unassigned);phys.veloc.orbital;arith.diff;meta.abstract;meta.main)
  (1)<F2000>   [0/1.2] Average flux (Note 4)   ((unassigned);(unassigned);(unassigned);meta.abstract)
  (1)DelF   [-0.5/1] Value defined in Equ. 4 (Note 5)   ((unassigned);(unassigned);(unassigned);meta.abstract;instr.offset)
  (1)delv km/s (n) [-1733/1553] Velocity offset (Note 6)   ((unassigned);(unassigned);(unassigned);spect.index;instr.bandpass)
  (1)LWave 0.1nm (n) [3204/6615] Lower wavelength of Ly{alpha} analysis (Å) ((unassigned);(unassigned);(unassigned);meta.bib.author)
  (1)UWave 0.1nm (n) [3217/6634] Upper wavelength of Ly{alpha} analysis (Å) ((unassigned);(unassigned);(unassigned);meta.bib.author)
  (1)l_WLya (char) Limit flag on WLya ((unassigned);phys.veloc.orbital;arith.diff;pos.galactic.lon)
  (1)WLya 0.1nm (n) [0.2/23.7] Rest equivalent width (Note 7)   ((unassigned);(unassigned);(unassigned);phys.at.moment.magnetic;meta.main)
  (1)e_WLya 0.1nm (n) [0.01/0.3] Uncertainty in WLya (stat.value;phys.atmol.qn.I;arith.grad;time.age;meta.main)
  (1)l_logNH (char) Limit flag on logNH (time.lifetime;(unassigned);arith.factor;pos.galactic.lon)
  (1)logNH [cm-2] (n) [14.3/21.3] Log of H I column density ((unassigned);(unassigned);(unassigned);(unassigned))

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)e_logNH [cm-2] (n) [0.1/0.4] Uncertainty in logNH ((unassigned);(unassigned);(unassigned);time.age;meta.main)
  (1)OT  (n) [-1/1] Optical thick flag (Note 8)   ((unassigned);phys.veloc.orbital;arith.diff;pos.eq.dec)
  (1)Qfg (char) Name of the foreground quasar in SIMBAD ((unassigned);(unassigned);(unassigned);spect.line.veloc)
  (1)Qbg (char) Name of the background quasar in SIMBAD ((unassigned);(unassigned);(unassigned);spect.line.veloc)
  (1)DR9Q  (n)Sources from Paris+, 2012, VII/269, within 2" ((unassigned);(unassigned);(unassigned);pos.geocentric)
  (1)Obs  (n)Display the observation log ((unassigned);(unassigned);(unassigned);pos.eq.dec)
   (ALL)Sloan (char) Display the online SDSS data for the nearest object ((unassigned);(unassigned);(unassigned);pos.geocentric)
  (1)Simbad (char) ask the Simbad data-base about this object ((unassigned);(unassigned);(unassigned);pos.geocentric)
   (ALL)_RA deg Postion of foreground quasar (from f/g-Q identifier (right ascension part) ((unassigned);(unassigned);(unassigned);(unassigned);arith)
   (ALL)_DE deg Postion of foreground quasar (from f/g-Q identifier (declination part) ((unassigned);(unassigned);(unassigned);(unassigned);arith)
  (2)Obs (char) Observatory ((unassigned);(unassigned);(unassigned);spect.line.veloc;phys.angArea)
  (2)Date "Y:M:D" (n)Observation date (Note 3)   ((unassigned);(unassigned);(unassigned);pos.centroid;stat.param)
  (2)Exp s [300/16800] Exposure time (Note 4)   ((unassigned);(unassigned);(unassigned);(unassigned);(unassigned);meta.main)

ALL cols		    
(n) indicates a possible blank or NULL column(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=846443624 Where phase=3 and catid=17760136
**** 
**** --POSTGRES MSG db=0
**** 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 
****Error execute query: UPDATE METAstat set nother=nother+1, tother=846443624 Where phase=3 and catid=17760136
**** 
**** --POSTGRES MSG db=0
**** 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/VR208339.err (2026-10-27T19:13:40)
-3
-source=J/ApJ/776/136
-ref=VIZ6ae0f7e832dd3
elapse time 4