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Unformatted text preview: The Sun is a relatively regular star Determining the Age o Stars that are still in clusters are the easiest way to determine age o globular cluster millions of stars held together in a relatively small area a few 10s of light years wide all the stars are formed from the same cloud of gas, around the same time, and at relatively the same distance O-type stars only live for a few million years Sun = 10 billion years M Star is greater than 100 billion years The turn-off point of the main sequence gives Age of cluster Find age by looking at the most massive star If G types had burnt out be at least 10 billion years old...
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This note was uploaded on 04/04/2008 for the course ASTRO C 10 taught by Professor Filippenko during the Fall '08 term at University of California, Berkeley.
- Fall '08
- Dark Energy