Chapter 9 Summary
• Interstellar Medium
– Types of Nebulae (emission, reflection, dark)
• Interstellar Reddening from dust
• Star formation
• Protostar Evolution on H-R Diagram
• Fusion (CNO cycle, etc.)
• Pressure-Temperature “Thermostat”
• Stellar Structure (hydrostatic equilibrium, etc.)
• Convection, radiation, and opacity
• Stellar Lifetimes