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II/66
  A Catalogue of observations in H alpha (Ducati, 1981)
Post annotation
  
1.II/66/obsPublished measurements (4095 rows)
2.II/66/meansHomogeneous data (2299 rows)
3.II/66/refsReferences in numerical order (39 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)HD  (n) Star identification, usually HD (meta.id)
  (1)m_HD (char) HD suffix (/3,/0, A, B, etc.) (meta.code.multip)
  (1+2)ID (char) Alternate designation (meta.id)
  (1)Sp (char) Spectral type from original reference (src.spType)
  (1)Vmag mag (n) Visual magnitude if provided (phot.mag;em.opt.V)
  (1+2)Ha mag (n) H alpha measurement (spect.index)
  (1)u_Ha (char) Uncertainty code for H alpha (meta.code.error)
  (1)e_Ha mag (n) Mean error of H alpha measurement (stat.error)
  (1)x_Ha (char) Method of measurement of Ha (Note)   (meta.unit)
  (1)o_Ha  (n) Number of observations or weight (meta.number)

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(n) indicates a possible blank or NULL column(i)indexed column
  (1)w_wt  (n) Weight of weight (stat.weight)
  (1)rem  (n) [1,6] Coded remarks (Note)   (meta.note)
   (ALL)ref   [1/37] Reference number (file refs.dat) (meta.ref)
  (3)Cont (char) [ab ] Continuation (meta.note)
  (3)source (char) Text of reference (meta.ref)

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