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  Variable MgII NALs in SDSS DR14 (Chen+, 2020)
Post annotation
1.J/ApJS/250/3/table1Catalog of Mg II absorption line systems[spectrum] (22746 rows)

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)
  Seq   [1/11373] Identification number of NAL pair (
  SDSSo (char) Quasar SDSS DR14Q identifier (position based names as in VII/286, sometimes incorrect) (;meta.main)
  Plate   [266/10000] SDSS plate number (;instr.plate)
  MJD d (i) [51613/57520] SDSS Modified Julian Date of the observation (time.epoch)
  Fiber   [1/1000] SDSS fiber identifier (
  zem   [0.54/2.34] Redshift from emission lines (src.redshift)
  zabs   [0.33/2.33] Redshift of MgII NAL (src.redshift)
  EW2796 0.1nm [0.07/8.7] Rest frame MgII 2796Å equivalent width; in Angstrom units (spect.line.eqWidth)
  e_EW2796 0.1nm [0.02/13.6] Uncertainty in EW2796 (stat.error)
  EW2803 0.1nm [0.03/7.4] Rest frame MgII 2803Å equivalent width; in Angstrom units (spect.line.eqWidth)

ALL cols
 (i)indexed column
  e_EW2803 0.1nm [0.02/17] Uncertainty in EW2803 (stat.error)
  F3000 10-17cW/m2/nm(n) [0.2/241.4] Continuum flux at rest frame 3000Å (Note 1)   (phot.flux.density;spect.continuum)
  e_F3000 10-17cW/m2/nm(n) [0.09/5.4] Uncertainty in F3000 (Note 1)   (stat.error)
  Vr km/s [-5947/151956] Offset velocity of MgII NAL relative to quasar redshift (phys.veloc;arith.diff)
  ID   [1/8958] Identification number of Mg II NAL (
  f_EW2796  (n) [-2/1] Flag on EW2796 (Note 2)   (meta.code)
  SL  (n) [0/9.9] Significance level of the variation (Note 3)   (
  Sp  Interactive spectrum from SDSS-DR14 (meta.ref.url)
  SimbadName (char) Designation understandable by the Simbad data-base (
  NED  ask the NED data-base about this object (meta.ref.url)
  _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)

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