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Stellar structure

  1. Apr 23, 2011 #1
    1. The problem statement, all variables and given/known data

    Let be the density given by the expression p = pc(1-r/R) where R is tha radius of the star. Find the stratification for pressure and temperature.

    2. Relevant equations

    Equilibrium eq. dP/dr = -Gm(r)p/r2

    Continuity eq. dm/dr = 4*Pi*r2p

    PS.: p == rho (sorry for not using TeX)

    3. The attempt at a solution

    The main problem is how to find the temperature stratification... maybe using the ideal gas equation PV =nRT?

  2. jcsd
  3. Apr 23, 2011 #2


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    Homework Helper

    Have you already found the pressure distribution? If so, try rewriting the ideal gas law in terms of density, by multiplying both sides of PV=nRT by molar mass.
  4. Apr 26, 2011 #3
    Yes, I've found P(r) using Equilibrium equation, now if I write P=puRT (p:density; u:molar mass) and p=pc(1-r/R). Then I Have a relation between T and p, is that right?

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