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Figure-Based Questions
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1

Suppose there is a cluster of stars in which there are no main sequence stars hotter than spectral class A0. Use Table 19.1 and Figure 19.9 to estimate the age of the cluster.
2

Use Figure 19.9 to find the main sequence lifetime of a 5 solar mass star.
3

Use Figure 19.19 to find the luminosity of a Cepheid variable that has a period of 100 days.





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