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:
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NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
J/ApJS/258/18
  Damped Ly{alpha} systems from SDSS DR16Q (Chabanier+, 2022)
ReadMe+ftp
2022ApJS..258...18C
Similar Catalogs
spectrum
Post annotation 		img(gal)
1.J/ApJS/258/18/dr16dlaThe DR16 damped Ly{alpha} (DLA) catalog[spectrum] (117458 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)
  ID  (n) [7095815/554679218] The SDSS identifier as found in DR16Q, Cat. VII/289 (THING_ID) ((unassigned);phys.veloc.orbital;arith.diff;spect.line.veloc;arith)
  zQSO   [2/5.6] Quasar redshift of the sight line using the Z_PCA estimator of DR16Q (Z_QSO) (Note 1)   ((unassigned);(unassigned);(unassigned);pos.parallax;arith.diff;meta.main)
  zCNN   [2/5.4] Absorber redshift as found by the convolutional neural networks (CNN; Parks+ 2018MNRAS.476.1151P) (Z_CNN) (stat.value;pos.phaseAng;arith.grad;pos.parallax;arith.diff;meta.main)
  Conf   [0.1/1] Confidence parameter of the CNN (>0.5=highly confident absorbers) (CONF_CNN) (src.morph.param;meta.id.cross;(unassigned);pos.cartesian)
  NHIcnn [cm-2] [19.7/22.3] Logarithm of the absorber column density as found by the CNN (NHI_CNN) ((unassigned);(unassigned);(unassigned);(unassigned))
  Flux 10-19W/m2/nm(n) [-0.99/73.6] Mean forest flux in 10–19W/m2/nm units (MEAN_FLUX) (Note 2)   ((unassigned);phys.veloc.orbital;arith.diff;meta.abstract)
  SNR   [-1.3/41] Mean signal-to-noise ratio of the sight line ((unassigned);(unassigned);(unassigned);meta.abstract;src.orbital.meanMotion;meta.main)
  Plate   [269/11704] SDSS spectroscopic plate of the sight line as found in DR16Q ((unassigned);phys.veloc.orbital;arith.diff;instr.det.psf;phys.atmol.term)
  MJD d (i) [51612/58543] SDSS modified Julian date of observation of the sight line as found in DR16Q (src.class.distance;phys.size;arith.factor;pos.centroid;meta.main)
  Fiber   [1/1000] SDSS spectroscopic fiber identification of the sight line as found in DR16Q (FIBERID) ((unassigned);phys.veloc.orbital;arith.diff;src.class.color;instr.det.psf;phys.angMomentum;meta.main)
  RAJ2000 deg (i) Right ascension (J2000) of the sight line as found in DR16Q (RA) ((unassigned);(unassigned);(unassigned);(unassigned);arith)
  DEJ2000 deg (i) [-17.6/70] Declination (J2000) of the sight line as found in DR16Q (DEC) ((unassigned);phys.veloc.orbital;arith.diff;(unassigned);arith)
  NHIfit [cm-2] (n) [19.29/22.4] Logarithm of the absorber column density as found by the Voigt profile fitter for absorbers in the rest-frame range 1040Å<={lambda}RF<1216Å (NHI_FIT) ((unassigned);(unassigned);(unassigned);(unassigned))
  Sp  Interactive spectrum from SDSS-DR16 ((unassigned);phys.veloc.orbital;arith.diff;pos.geocentric)
spectrum
  SimbadName (char) (n)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)

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