The choices below each describe the appearance of an H-R diagram for a different star cluster.Which cluster is most likely to be located in the halo of our galaxy?

Question

Quizplus · Accepted Answer

Stars in the halo tend to be older and have lower metallicity, which corresponds to a lack of heavy elements in their atmospheres. This would result in a population of stars with cooler temperatures and redder colors, which are characteristic of spectral types G, K, and M. The numerous giants and white dwarfs in the diagram further suggest that this cluster has gone through an extended period of stellar evolution, consistent with an old population in the halo.

The Choices Below Each Describe the Appearance of an H-R