The Hertzsprung-Russell diagram is a plot of:
A) apparent brightness against intrinsic brightness of a group of stars.
B) apparent brightness against distance for stars near the Sun.
C) luminosity against mass of a group of stars.
D) absolute magnitude (or intrinsic brightness) against temperature of a group of stars.

Question

Quizplus · Accepted Answer

The Hertzsprung-Russell diagram is a plot of absolute magnitude (or intrinsic brightness) against temperature of a group of stars. This allows astronomers to classify stars based on their size, temperature, and stage in their evolution.

The Hertzsprung-Russell Diagram Is a Plot Of