A diagram showing the [[luminosity]] and temperature of stars, which is useful for comparing large numbers of stars and for tracking their evolution. Photospheric temperature is shown along the horizontal axis (increasing to the left), and luminosity is shown along the vertical axis. A star appears as a point on the diagram, corresponding to its temperature and luminosity.
[[Docent/S284 Astronomy]]
[[../Chapters/Part 2 Spectral lines]]