Hertzsprung-Russell diagram
Diagrama de Hertzsprung-Russell
- Date
- 1911-1913 · confidence high
- Place
- Princeton University Observatory, New Jersey, United States
- Credited to
- Ejnar Hertzsprung; Henry Norris Russell
- People
- 👤 Ejnar Hertzsprung1873–1967👤 Henry Norris Russell1877–1957
- Field
- Cosmos & Earth
What was discovered
By plotting luminosity against spectral type, stars cluster into a main sequence, giants and white dwarfs. It is the map of stellar evolution.
Hertzsprung published his results in Potsdam in 1911; Russell presented the diagram in 1913.
What it led to
- Theory of stellar evolution
- Distances via spectroscopic parallax
- Ages of clusters