The textbook, Carroll & Ostlie, is quite expensive ($160 new at the bookstore; the used texts cost about $120). You MUST have access to this text. It is a good text, and may be useful in AST 346/347.
You may be able to purchase the text for less on-line, at
You MUST have the second edition (2007) of the text.
There is a shorter and slightly less expensive version of the text called An Introduction to Modern Stellar Astrophysics. It is substantially the same as the required text. If you use this text, you assume responsibility for checking for differences between this and the required text.