When the absolute magnitudes, or brightnesses, of stars are plotted against their surface temperatures or colors, we obtain a(n)
A) Hertzsprung-Russell (or H-R) diagram.
B) straight line.
C) random pattern.
D) none of the above

Question

Quizplus · Accepted Answer

The Hertzsprung-Russell (H-R) diagram is a scatter plot that shows the relationship between the absolute magnitudes (intrinsic brightness) of stars and their surface temperatures (or colors), revealing patterns that indicate various stages of stellar evolution.

When the Absolute Magnitudes, or Brightnesses, of Stars Are Plotted