Astronomy 110 Homework #7

Due  November 6th, 2012

Name:_________________________________

1) Describe the evolution of a low mass star from its beginning in a cool cloud of hydrogen gas, to its dying days as a white dwarf. Note all of the most important events in its life. Also draw-up an HR Diagram that shows this evolution with the positions of these important events labeled. Do Not, I repeat, Do Not try to squeeze your answer in this tiny space!!!! (15 points)

2) Compare the evolution (life history) of a high-mass star to that of a low mass star. How do they differ? What are the final stages like? Compare and contrast the various stages in the lives of low and high mass stars. (10 points)