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VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:

  
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J/ApJS/235/11
  Absorption features in SDSS. I. MgII abs. doublets (Chen+, 2018)
spectrum
Post annotation
img(gal)
1.J/ApJS/235/11/table1(c)Catalog of quasar spectra searched for MgII absorption systems[spectrum] (198229 rows)
2.J/ApJS/235/11/table2Catalog of MgII absorption systems (17316 rows)

 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  (1)EW (char) Display the MgII absorption system catalog (table 2) (meta.ref.url)
   (ALL)SDSS (char) (i) SDSS identifier (JHHMMSS.ss+DDMMSS.s) (Note G1)   (meta.id;meta.main)
   (ALL)Plate  SDSS plate number (meta.id;instr.plate)
   (ALL)MJD d [51608/56837] Modified Julian Date of the observation (time.epoch)
   (ALL)Fiber  SDSS fiber number (meta.id)
   (ALL)zem   [0.3/2.8] Spectroscopic emission line derived redshift (src.redshift)
  (1)logL [10-7W] [43/47.5] log monochromatic flux at 3000Å; in units of erg/s. (phys.luminosity)
  (1)S/N   [3/87] Median Signal-to-Noise per pixel (stat.snr)
  (1)DR7Q  (n)Display the SDSS -DR7 quasar catalog (VII/260) within 1" if any (meta.ref.url)
  (1)DR12Q  (n)Display the SDSS -DR12 quasar catalog (VII/279) within 0.5" (meta.ref.url)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)DR7+DR12 (char) Display data from the SDSS -DR7 (II/294) and -DR12 (V/147) photometric catalogs within 0.5" (meta.ref.url)
  (1)Sp (char) Interactive spectrum from SDSS-DR12 (meta.ref.url)
  (1)Simbad (char) ask the Simbad data-base about this object (meta.ref.url)
  (1)NED (char) ask the NED data-base about this object (meta.ref.url)
  (1)_RA deg (i) Position from SDSS name (right ascension part) (pos.eq.ra;meta.main)
  (1)_DE deg (i) Position from SDSS name (declination part) (pos.eq.dec;meta.main)
  (2)zabs   [0.3/2.6] Spectroscopic absorption line derived redshift (src.redshift)
  (2)W2796 0.1nm [0.2/8.3] Equivalent width of MgII 2796Å line (Note 1)   (spect.line.eqWidth)
  (2)e_W2796 0.1nm [0.02/1.7] Uncertainty in W2796 (Note 1)   (stat.error)
  (2)W2803 0.1nm [0.2/7.5] Equivalent width of MgII 2803Å line (Note 1)   (spect.line.eqWidth)
  (2)e_W2803 0.1nm [0.02/1.4] Uncertainty in W2803 (Note 1)   (stat.error)
  (2)RV km/s [-10447/11652] Radial velocity (phys.veloc;pos.heliocentric)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
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