Astrophysics (Index)About

Hess diagram

(diagram relating effective temperature to luminosity)

A Hess diagram is a graph showing the density of occurrence of stars over the same axes as H-R diagrams: effective temperature versus luminosity. (The term may have been used for similar type density plots.) Richard Hess originated the concept in 1924, using lines like a typical drawn topographic map. Currently, it is common to use colors to indicate the densities.

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