According to the mass-luminosity relation shown in Figure 10-14 of Comins,Discovering the Essential Universe,6th ed.,what is the mass of the star Regulus (α Leonis,the brightest star in the constellation Leo)? See also the Hertzsprung-Russell diagram in Figure 10-7.
A) between 2.5 and 5 solar masses
B) between 1.5 and 2 solar masses
C) between 10 and 15 solar masses
D) between 8 and 10 solar masses

Question

Quizplus · Accepted Answer

Regulus is a B7V star, which corresponds to a mass of between 2.5 and 5 solar masses.

According to the Mass-Luminosity Relation Shown in Figure 10-14 of Comins,Discovering