In the Hertzsprung-Russell diagram in Figure 10-7 of Comins,Discovering the Essential Universe,6th ed.,which list is the CORRECT sequence of stars in order of increasing intrinsic brightness?
A) Deneb, the Sun, Sirius B, Procyon B
B) Sirius B, Deneb, Procyon B, the Sun
C) Sun, Procyon B, Deneb, Sirius B
D) Procyon B, Sirius B, the Sun, Deneb

Question

Quizplus · Accepted Answer

In the Hertzsprung-Russell diagram, stars are arranged by intrinsic brightness (luminosity) and temperature. Procyon B and Sirius B are white dwarfs with low intrinsic brightness, the Sun is a main-sequence star with moderate brightness, and Deneb is a supergiant with high intrinsic brightness.

In the Hertzsprung-Russell Diagram in Figure 10-7 of Comins,Discovering the Essential