Hess diagram

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Hess diagram with data from SDSS b>80 degree

A Hess diagram plots the relative density of occurrence of stars at differing color–magnitude positions of the Hertzsprung–Russell diagram for a given galaxy. The diagram is named after R. Hess who originated it in 1924.[1] Its use dates back to at least 1948.[2]

References[edit]

  1. ^ R. Hess (Heß) (1924). "Die Verteilungsfunktion der absoluten Helligkeiten in ihrer Abhängigkeit vom Spektrum". Probleme der Astronomie. Festschrift fur Hugo v. Seeliger. Springer, Berlin. p. 265. 
  2. ^ Gaposchkin, Cecilia Payne (1948). "The connection of motion with intrinsic variability.". Astronomical Journal 53: 193. Bibcode:1948AJ.....53..193G. doi:10.1086/106093.