Lab 10: The Milky Way

A galaxy is a collection of ______, _______, and ________ gravitationally bound together.

Types of galaxies:

1. _____________- dominated by a disk distribution
2. _____________- dominated by an halo distribution

The O plate was taken with a _____-color filter.
The E plate was taken with a _____-color filter.

Types of Objects in the Sky:

• Emission:
  _____________________________________
  
  _____________________________________
  
  _____________________________________



• Absorption:
  _____________________________________
  
  _____________________________________



• Reflection:
  _____________________________________

O-plate

E-plate