**
Problem set 5 for ASTR 221: Stars and Planets
**
**
**

**
Due Friday Nov 7 at 5pm.
**

**
Kutner Problems P2.3, P2.5 (this gives a commonly used approximation: if stellar brightness differs by 0.01 mag, this is roughly 1%), P2.13, P2.14, P2.19
**

**
Kutner Computer Problem C2.2 Hint: simplify the equation before you type it into your plotting code.
**

**
Kutner problems P3.17 (look at Figure 3.11), P3.18 (assume that the apparent magnitude is in the V band), P3.19 (use Figure 3.11 again).
**

**
Give the spectral type of the following spectra, by comparing to the
spectral type examples in class notes. For each spectrum write a sentence
explaining which features caused you to make this classification.
**

**
(a) and (b):
(c) and (d):
(e) and (f):
**