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J/ApJS/243/2
  SiIV and NV absorption line SDSS quasar systems (Chen+, 2019)
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2019ApJS..243....2C
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1.J/ApJS/243/2/table1Catalog of SiIV Absorption Line Systems[spectrum] (716 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)
  Pair   [1/358] ID number of a NAL pair ((unassigned);(unassigned);(unassigned);spect.line.veloc)
  SDSS (char) SDSS object name (HHMMSS.ss+DDMMSS.s; J2000) ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc;arith)
  Plate  SDSS spectra plate ID ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc;phys.atmol.qn.F)
  MJD d SDSS spectra modified Julian Date of observation ((unassigned);phys.veloc.orbital;arith.diff;pos.centroid;meta.main)
  Fiber  SDSS spectra fiber ID ((unassigned);(unassigned);(unassigned);spect.line.veloc)
  zem   [1.75/4.26] Redshift, quasar (phot.limbDark;phys.mol;arith.grad;pos.parallax;meta.main)
  zabs   [1.73/4.14] Redshift, absorption line system, blue line of the SiIV doublet (phot.mag.reddFree;pos.parallax.trig;arith.grad;pos.parallax;meta.main)
  EW1393 0.1nm [0.05/4] Equivalent width at rest frame, SiIV 1393Å ((unassigned);phys.veloc.orbital;arith.diff;phys.at.moment.magnetic;meta.main)
  e_EW1393 0.1nm [0/0.6] Uncertainty in EW1393 (Note 1)   ((unassigned);em.line;arith.grad;time.age;meta.main)
  EW1402 0.1nm [0.04/3.8] Equivalent width at rest frame, SiIV 1402Å ((unassigned);phys.veloc.orbital;arith.diff;phys.at.moment.magnetic;meta.main)
  e_EW1402 0.1nm [0/0.7] Uncertainty in EW1402 (Note 1)   ((unassigned);phys.veloc.orbital;arith.diff;time.age;meta.main)
  F1350 10-19W/m2/nm [6/422] Continuum 1350Å flux, rest frame; in 10–17erg/s/cm2/Å units ((unassigned);phys.veloc.orbital;arith.diff;meta.abstract)
  e_F1350 10-19W/m2/nm [0.2/5] Uncertainty in flux1350 ((unassigned);phys.veloc.orbital;arith.diff;time.age;meta.main)
  Vr km/s [-4498/28417] Offset velocity, SiIV absorption line system to quasar redshift (Note G1)   ((unassigned);(unassigned);(unassigned);spect.index;instr.bandpass)
  ID   [1/295] Identification number of the SiIV absorption line system ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc)
  Sys  (n) [-2/2] System category (Note 2)   ((unassigned);phys.veloc.orbital;arith.diff;pos.eq.dec)
  SL  (n) [0/17.4] Significance level of the variation (Note 3)   ((unassigned);phys.veloc.orbital;arith.diff;phys.polarization.circular;meta.main)
  Sp  Interactive spectrum from SDSS-DR14 ((unassigned);phys.veloc.orbital;arith.diff;pos.geocentric)
spectrum

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The following problems were encountered in this VizieR run:
****Error execute query: UPDATE METAstat set nother=nother+1, tother=846452172 Where phase=3 and catid=22430002
**** 
**** --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/VR386627.err (2026-10-27T21:36:10)
-3
-source=J/ApJS/243/2/table1
-ref=VIZ6ae1194b5e643
elapse time 2