VizieR

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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/847/81
  HeII photoionization rates of quasars (Schmidt+, 2017)
ReadMe+ftp
2017ApJ...847...81S
Similar Catalogs
Post annotation 		img(gal)
1.J/ApJ/847/81/losqsoOverview of the FUV spectra, HeII sightlines and the number of foreground quasars for the 22 background quasar sightlines (tables 1 and 2) (22 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);meta.version;arith.diff;phys.veloc)
  HE2QS (char) He II-transparent quasar ID ((unassigned);(unassigned);(unassigned);spect.line.veloc;arith)
  Inst (char) HST instrument +grating ((unassigned);(unassigned);(unassigned);meta.code.qual)
  R   [1000/18000] Dispersion ((unassigned);meta.version;arith.diff;phys.mass)
  HST   [9350/13013] HST Program Id ((unassigned);meta.version;arith.diff;spect.line.veloc;stat.median)
  PI (char) HST Program PI ((unassigned);instr.det.psf;stat.min;meta.version)
  Ref (char) Reference(s) (Note 1)   ((unassigned);(unassigned);arith;phys.veloc.dispersion;€?**ucdid=0**?)
  RAJ2000 "h:m:s" Hour of Right Ascension (J2000) (phot.color;phys.size.radius;arith.factor;(unassigned);arith)
  DEJ2000 "d:m:s" Degree of Declination (J2000) ((unassigned);instr.det.noise;stat.min;(unassigned);arith)
  zBG   [2.7/4] Spectroscopic redshift of HeII-transparent QSO ((unassigned);instr.det.noise;stat.min;pos.parallax;arith.diff;meta.main)
  N-VLT  (n) [0/2] Number of quasars detected with VLT/VIMOS+LBT/LBC ((unassigned);phys.luminosity.fun;arith.factor;src.var)
  N-NTT  (n) [0/2] Number of quasars detected with NTT/EFOSC2 ((unassigned);stat.error;arith.factor;src.var)
  N-CAHA  (n) [0/5] Number of quasars detected with CAHA/TWIN ((unassigned);meta.version;arith.diff;src.var)
  N-SDSS  (n) [0/7] Number of quasars used from SDSS (Note 1)   ((unassigned);(unassigned);(unassigned);src.var)
  N-Lit  (n) [1/2] Number of quasars used from the Literature (Note 2)   (stat.fit.residual;pos.wcs.crval;arith.factor;src.var)
  Nfg  (n)Number of foreground quasars in this field (link to table 3) ((unassigned);meta.version;arith.diff;src.var)
  Sloan  Display the online SDSS data for the nearest object ((unassigned);meta.version;arith.diff;pos.geocentric)
  SimbadName (char) Designation understandable by the Simbad data-base ((unassigned);(unassigned);(unassigned);spect.line.veloc)
  NED  ask the NED data-base about this object ((unassigned);(unassigned);(unassigned);pos.geocentric)

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=846683893 Where phase=3 and catid=18470081
**** 
**** --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/VR3004455.err (2026-10-30T13:58:11)
-3
-source=J/ApJ/847/81/losqso
-ref=VIZ6ae4a2742dd827
elapse time 2