赫罗图

光谱型态

棕矮星

白矮星

红矮星

次矮星

主序星

(矮星)

次巨星

巨星

亮巨星

超巨星

特超巨星

绝对

星等

(M_V)

亮巨星在约克光谱分类中的光度属于Ⅱ，是介于超巨星和巨星之间的恒星。一般来说，是光度比巨星明亮但又达不到超巨星程度的恒星。

在各种不同的颜色中，知名的巨星有：

Hertzsprung–Russell diagram

Spectral type

Brown dwarfs

White dwarfs

Red dwarfs

Subdwarfs

Main sequence
("dwarfs")

Subgiants

Giants

Bright giants

Supergiants

Hypergiants

absolute
magni-
tude
(M_V)

The luminosity class II in the Yerkes spectral classification is given to bright giants. These are stars which straddle the boundary between ordinary giants and supergiants, and the classification is in general given to giant stars with exceptionally high luminosity, but which are not sufficiently bright or massive to be classified as supergiants.