The Hertzsprung Russell Diagram
The Hertzsprung Russell Diagram. We can express luminosity in solar units: how many times more powerful is the star than the Sun? Top: The general labeling of stars into four groups is shown.
If you plot the brightness versus color, or spectral type, of stars you get a scatter plot - these quantities are not The H-R diagram has played a crucial role in developing our understanding of stellar structure and evolution.
It's generally used to understand a star's age.
HR diagrams are valuable because they reveal important information about the stars plotted on them. A Hertzsprung-Russell diagram, or HR diagram, is a graph of stellar temperatures (plotted on the horizontal axis) and luminosities or brightnesses (plotted on the vertical axis). They are all challenged and a little uncomfortable with the.
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