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  Quasar composite made from bright QSOs (Selsing+, 2016)
Post annotation
1.J/A+A/585/A87/spectrumQuasar composite spectrum [spectrum](spectrum) (25875 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)
  lambda 0.1nm Wavelength array for the composite (em.wl)
  S  Normalized flux density, normalized to unity at 6800Å (Note 1)   (phot.flux)
  e_S  Error relative to the normalized flux density (stat.error)

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 (i)indexed column
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usage  Display UCD1+    UCD1  
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