![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Hess_diagram.jpg/640px-Hess_diagram.jpg&w=640&q=50)
Hess diagram
Diagram of stars in astronomy / From Wikipedia, the free encyclopedia
Not to be confused with Hasse diagram.
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 or resolved stellar population. The diagram is named after R. Hess who originated it in 1924.[1] Its use dates back to at least 1948.[2]
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Hess diagrams are widely used in the study of discrete resolved stellar systems in and around the Milky Way - specifically, in the analysis of globular clusters, satellite galaxies, and stellar streams.