Lecture 21: Testing Stellar Evolution

What are our observational tests of Stellar Evolution? This lecture
discusses how we use Hertzsprung-Russell Diagrams of star clusters
to test stellar evolution theory, and some of the conclusions we have
drawn. In particular, we will see how the age of a star cluster can
be estimated from the Main-Sequence Turn-Off for the cluster. We
also introduce Open and Globular Clusters, and show how we apply
stellar evolution theory to their H-R diagrams.
Recorded 2006 February 2 in 1008 Evans Laboratory on the Columbus campus
of The Ohio State University.