A star with a surface temperature of 5000 K and a luminosity greater than 10⁴ times that of the Sun is a member of which luminosity class? (See Figure 10-10,Comins,Discovering the Essential Universe,6th ed.)
A) II, bright giant
B) V, main sequence
C) III, giant
D) I, supergiant

Question

Quizplus · Accepted Answer

A star with a surface temperature of 5000 K and a luminosity greater than 10⁴ times that of the Sun is classified as a supergiant, which is represented by the luminosity class I.

A Star with a Surface Temperature of 5000 K and a Luminosity