A young star cluster will have ____ than an older star cluster.
A) a redder turn-off point
B) a bluer turn-off point
C) fewer stars
D) fewer luminous stars
E) more low mass stars

Question

Quizplus · Accepted Answer

A young star cluster will have a bluer turn-off point than an older star cluster because the most massive and hottest stars will have already exhausted their fuel and left the main sequence in an older cluster, while in a younger cluster, these massive and hot stars will still be on the main sequence.

A Young Star Cluster Will Have ____ Than an Older