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ASTR 1303 - Ages and Distances of Clusters
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Complete the table on page 2 and then answer the questions below.
Questions
1.
How would you characterize the H-R diagrams of a young cluster and of an old cluster?
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2.
What are the effects of interstellar reddening on the measured distances and observed colors of stars?
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3.
If interstellar reddening is not taken into account, how would the observed size of the galaxy and the universe be affected?
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4.
Is star formation still occurring within our galaxy? Support your answer with the cluster ages you have just determined.
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5.
The color-magnitude diagram of the open cluster NGC 2682 (M67) is very similar to the HR diagrams of all globular clusters. Is there
anything you can conclude about globular clusters from this fact?
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