A H-R Diagram Is Made for Two Star Clusters, Cluster

question 51

Multiple Choice

A H-R diagram is made for two star clusters, Cluster A and Cluster B.Cluster A has stars of spectral type A, while Cluster B has no such stars.What can we conclude about these two clusters from this information?

• A) Cluster A has more total stars than Cluster B.
• B) Cluster A is more distant than Cluster B.
• C) Cluster A has less iron present than Cluster B.
• D) Cluster A is younger than Cluster B.
• E) Nothing can be determined without more information.

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