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*What is the Hayashi Track?
 
*What is the Hayashi Track?
 
*What is on the diagram at cooler temps?
 
*What is on the diagram at cooler temps?
 
*What is the luminosity-mass relation for main-sequence stars?
 
*How do you draw lines of constant radius?
 
*Talk about the HR diagram and its inhabitants.
 
 
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a bit redundant but on a different exam DC asked:
 
 
* Draw an HR diagram, label T and L axes
 
* List different spectral classes and their temperatures
 
* draw the evolution of a star like the sun
 
* name the branches
 
* what is helium flash? where is it on the evolutionary track? describe it.
 
 
follow-up by PJ:
 
 
* what is the end product of the star? What supports a WD?
 
* what supports a brown dwarf? is that related to the fact that they don't start fusion?
 
* is triple-alpha a 3-body interaction?
 
* does the helium flash actually lead to an explosion?
 
 
* What is the dominant radiation mechanism in a planetary nebula around a white dwarf?
 
 
* Draw an HR diagram of a 5 billion yr old globular cluster?  What is the mass of the turnoff point?
 
** Describe the stars evolution.  (AB)
 
** After the AGB, what happens?  What powers a planetary nebula?  How can you get mass loss?  (SR)
 
 
[[Astrophysics]]
 

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