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Suns contraction

  1. Feb 17, 2007 #1
    as the sun evolved it contracted, its internal energy changing fro x to y. whats the total energy radiated, assuming luminosity is comparable with present?

    I understand that the rate of change of the internal energy = rate at which energy is radiated away by the star.. but i have been given exact numbers and i dont know what calculations to preform.

    any help would be really good. thanks.
  2. jcsd
  3. Feb 20, 2007 #2


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    Stars, like people, tend to be hot blooded in their youth:
    The first million years of the Sun: A calculation of formation and early evolution of a solar-mass star
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