|  | 
   
    |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
    |  | Ch. 9: The Formation & Structure of Stars 
 |  |  
    |  |  
    |  |  | 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 
 |  |  |  |