The Milky Way Flashcards
1
Q
What are the 3 main parts of a spiral galaxy? And what are the 3 things that are specific to each
A
- halo
- bulge
- disk
Each has its own motion, composition and structure
2
Q
What are some characteristics of the halo?
A
- old stars and globular clusters
- orbit randomly in 3D
- almost 0 dust
- no star formation
- roughly spherical
- reddish
3
Q
WHat are some characteristics of the bulge
A
- footballish shape
- high density of stars and gas
- individual motions are still random
- general rotation around galactic canter
4
Q
What are some characteristics of the disk
A
- flat
- star formation
- structural orbit
