Hertzsprung-Russell diagram

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English

A Hertzsprung-Russell diagram.

Etymology

After astronomers Ejnar Hertzsprung and Henry Norris Russell.

Noun

Hertzsprung-Russell diagram (plural Hertzsprung-Russell diagrams)

  1. (astronomy) A graphic representation of the absolute magnitude of stars against their color (or surface temperature), which shows the main sequence of stars plus the white dwarfs and red giants.

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