Hertzsprung–Russell diagram

Frae Wikipedia
Jump to navigation Jump to search
An HR diagram shawin mony well kent starns in the Milky Way galaxy.

The Hertzsprung–Russell diagram, abbreviatit H–R diagram or HRD, is a scatter graph o starns shawin the relationship atween the starns' absolute magnitudes or luminosities versus thair spectral clessifications or effective temperaturs.