15 February 2001CfA Colloquium

Title: The Ages of Stars

Speaker: Brian Chaboyer

Abstract: The ages of stars are based upon a comparison between observations and stellar evolution theory. I will provide an overview of the age determination process, including a discussion of possible sources of errors. Stellar ages provide valuable insight into two key questions in astrophysics. How did the Milky Way form? How old is the universe? The former question requires a study of the relative ages of a large number of stars, while the latter question involves the study of the absolute ages of the oldest stars. I will review recent progress in stellar age determations as they relate to formation of the Milky Way and the age of the universe.

Reference for students: Lunch with the students will be on Thursday, February 15th at 12:30 in A-101.