A452 HW #12

Handed out: April 10, 2007
Due (in class): April 17, 2007

Reading: Chapter 6 of Sparke & Gallagher

The rules: Collaborative work is encouraged. This homework can be done in consultation with your fellow classmates, the AI, or the professor. However, everyone must submit their own solutions to get credit, and all help should be acknowledged (a single sentence mentioning the others in your study group is sufficient). Show your work.

1. [5 pts] Problem 7.3 of Sparke & Gallagher

2. [5 pts] Problem 7.5 of Sparke & Gallagher

3. [10 pts] First part of Problem 6.1 of Sparke & Gallagher: Show that the R^1/4 formula yields the total luminosity shown; you do not need to show that the half light radius is R_e.

3. [15 pts] Problem 6.7 of Sparke & Gallagher

4. [15 pts] Problem 6.13 of Sparke & Gallagher