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bessieboo97 bessieboo97
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6 years ago
What is hydrostatic equilibrium and how is it used to explain the internal stability of a star?
 
  What will be an ideal response?

Question 2

What of the following distance methods is used to determine the distance to the most distant galaxies?
 
  a. radar echo
  b. supernova observations
  c. period-luminosity relationship of variable stars
  d. parallax

Question 3

Why are massive stars more luminous than low mass stars? That is, why is there a mass-luminosity relation?
 
  What will be an ideal response?

Question 4

What distance method did Edwin Hubble use to determine the distance to local galaxies?
 
  a. Hubble law
  b. supernova observations
  c. period-luminosity relationship of variable stars
  d. parallax

Question 5

Why is there a lower end to the main sequence?
 
  What will be an ideal response?
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bessieboo97 Author
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