Determining the Age, Distance & Relative Motion of Stars


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To determine the age of stars, which of the following would you want to study?

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1. Using the main sequence turnoff method, find the age of the stars in a star cluster where a star just leaving its main sequence phase has a luminosity (L) of 5 solar units.

2. What is the distance (d) to a star with a parallax (p) of 0.08 arc seconds?

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