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You Observe a Star Cluster with a Main- Sequence Turn-

Question 109

Multiple Choice

You observe a star cluster with a main- sequence turn- off point at spectral type G2 (the same spectral type as the Sun) . What is the age of this star cluster?


A) 10,000 years
B) 100 billion years
C) 4) 6 billion years
D) 10 billion years
E) You also need to know the luminosity class of the turn- off point to determine the age.

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