Hess diagram

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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.

Its use dates back to at least 1948.[1]


[edit] References

  1. ^ Gaposchkin, Cecilia Payne (1948). "The connection of motion with intrinsic variability.". Astronomical Journal 53: 193. 


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