Difference between revisions of "H-R Diagram"

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*How do you draw lines of constant radius?  
 
*How do you draw lines of constant radius?  
 
*Talk about the HR diagram and its inhabitants.
 
*Talk about the HR diagram and its inhabitants.
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 +
-----------------
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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?

Revision as of 21:59, 29 August 2007

Questions in this category have been asked by MT, PJ

  • Draw evolution of 8 Solar Mass Star from Pre-MS phase to end of life.
  • What is the Hayashi Track?
  • 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.

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?