Explain how does the use of h ii regions to find out a

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How does the use of H II regions to find a galaxy's distance differ from the use of Cepheid variables? in question 4 concentrate on the places we find H II regions and Cepheid variables and the distances that each can be observed. How bright are each? Are there any differences in accuracy? How do we know? How is their brightness used to determine distance?

Reference no: EM13462467

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