This sheet is to help you prepare for the third exam. It is not a "sample" of the exam. Instead it is designed to help you focus on the most important aspects of a large body of material.
0. What is a neutron star? How are they formed? How big is one? What is the limit on their masses? How is it that they are observed as pulsars? How else can they be detected?
1. What is the Schwarzschild Radius? How can we distinguish black hole candidates from neutron stars. What is the name of the best black hole candidate?
2. What is a nova? What is a burster? What is a dwarf nova?
3. Draw a schematic picture of the Milky Way as viewed from the side. Label all the main features.
4. Explain Reflection Nebulae, HII regions, Molecular Clouds, interstellar dust.
5. Explain the phases of the development of a supernova remnant. What is their importance to the interstellar medium? To star formation?
6. What are superbubbles? What is the galactic halo?
7. How can we tell the difference between a distant galaxy and a much closer gas cloud?
8. Draw a Hubble Sequence of Galaxies and label the galaxies shown on it.
9. Describe the Local Group of Galaxies. Name the major members.