HERTZSPRUNG-RUSSELL DIAGRAM
Spectral Class
o
B
A
G
M
Spica
Deneb SUPERGIANTS
Betelgeux
Aldebaran
GLANTS
Sirius A
Absolute Magnitude
MAIN SEQUENCE
Sun
10
12
Sirius B
WHITE DWARFS
14
16
Proxima
Centus
4,000 3,000
30,000
20,000
10,000 7,000 6,000
Temperature (K)
space fm
Which of the following stars is the brightest?
Sirius B
O Proxima Centuri
Sun
Deneb