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/932/76
  Ly{beta} dark gaps in z\la6 QSOs spectra (Zhu+, 2022)
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2022ApJ...932...76Z
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Post annotation 		img(gal)
1.J/ApJ/932/76/qsosList of targets; table added by CDS from Paper I (Zhu+ 2021, J/ApJ/923/223) (42 rows) (released 2025-06-02)
[METAtab] [METAcola]

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - ) [METAcola]
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  QSO (char) (i) QSO name (meta.id;meta.main)
  zem   [5.77/6.31] QSO redshift (src.redshift)
  r_zem (char) Reference on zem (Note 1)   (meta.ref;src.redshift)
  Source (char) Source of the spectrum used for dark gap statistics (Note 2)   (meta.code)
  Inst (char) Instrument ("ESI" or "X-Shooter") (meta.id;instr)
  S/N   [21/152] Signal-to-noise ratio (stat.snr)
  File  Subset number in Figure 1 file names; column added by CDS (meta.id;meta.file)
  S20  (n)Display data from Schindler+ 2020, J/ApJ/905/51 if any (meta.ref.url)
  Ng  (n)Number of dark gaps detected for this QSO (meta.number)
  SimbadName (char) (n)Designation understandable by the Simbad data-base (meta.id)
  _RA deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
  _DE deg (i) Declination (J2000) from SIMBAD (not part of the original data) (pos.eq.dec;meta.main)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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-3
-source=J/ApJ/932/76/qsos
-ref=VIZ68ee702c2e8415
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