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V/19
  Masses and Ages of Stars in 68 Open Clusters (Piskunov 1980)
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1980BICDS..19...67P
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1.V/19/dataData for individual stars (9879 rows)
2.V/19/clustersGeneral information on each cluster (68 rows)

Simple ConstraintList Of Constraints
 
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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)
   (ALL)Cl  (i) [1/68] Cluster number (see clusters.dat) (meta.id)
  (1)N  Running number within each cluster (Note)   (meta.id)
  (1)ID  Star number in UBV source (meta.id;meta.main)
  (1)B-V mag B-V color index (phot.color;em.opt.B;em.opt.V)
  (1)Vmag mag V magnitude (phot.mag;em.opt.V)
  (1)LC  Adopted luminosity class (src.class.luminosity)
  (1)log.Teff [K] Logarithm of effective temperature (phys.temperature.effective)
  (1)logL [solLum] Logarithm of luminosity (phys.luminosity)
  (1)Age yr (n) Age of the star (Note)   (time.age)
  (1)Mass solMass (n) Mass of the star (phys.mass)
  (1)Prob % [0/100] Probability of Age and Mass (stat.fit.goodness)
  (2)E(B-V) mag Colour excess (phot.color.excess)
  (2)m-M mag True distance modulus (Note)   (phot.mag.distMod)
  (2)Model (char) [IP] Evolutionary tracks used (Note)   (meta.note)
  (2)ClName (char) Name of cluster (meta.id;meta.main)
  (2)Ref (char) Reference text (meta.ref)

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