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  HII Regions Properties in M101 (Scowen+ 1992)
Post annotation
1.J/AJ/104/92/fig34567Table of derived properties of HII regions used in Figures 3,4,5,6 and 7. Higher threshold used. [Rnum,CHb,O3Hb,S2Ha,OH,U,Q] (248 rows)

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ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  Rnum  (i) [2/323] HII Region Reference Number (;meta.main)
  CHb  Balmer Decrement as C(H beta) (phot.flux;arith.ratio)
  O3Hb  Ratio of [O III] to H beta (phot.flux;arith.ratio)
  S2Ha  Ratio of [S II] to H alpha (phot.flux;arith.ratio)
  OH  Oxygen Abundance as 12+log(O/H) (phys.abund)
  U  Ionization Parameter (phys.ionizParam.rad)
  Q 10+45ct/sNumber of Ionizing photons /s (phys.luminosity)

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