If RR Lyrae Stars in a Globular Cluster Had an Apparent

question 15

Multiple Choice

If RR Lyrae stars in a globular cluster had an apparent magnitude of 11.5 and an absolute magnitude of 0.5, what would the globular cluster's distance be?

• A) 1,600 pc
• B) 1,900 pc
• C) 2,500 pc
• D) 3,200 pc
• E) 8,600 pc

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