White dwarfs are NOT included in the luminosity classification because they are
A) not yet active stars; they have not yet begun nuclear reactions.
B) no longer producing energy by nuclear reactions.
C) no longer radiating energy away.
D) too small.

Question

Quizplus · Accepted Answer

White dwarfs are not included in the luminosity classification because they are no longer producing energy through nuclear reactions. They are the remnants of stars that have exhausted their nuclear fuel.

White Dwarfs Are NOT Included in the Luminosity Classification Because