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Newsgroups: sci.astro, sci.physics, sci.math
From: Andrew Usher <k_over_hb...@yahoo.com>
Date: Sat, 5 Jul 2008 16:12:02 -0700 (PDT)
Local: Sun, Jul 6 2008 4:12 am
Subject: Re: Stellar Hydrostatic Equilibrium with Differential Rotation
On Jul 5, 4:24 pm, tadchem <tadc...@comcast.net> wrote:
> You might try a more realistic equation of state. The one you have is This is wrong - stars like the Sun are nearly ideal throughout, though > an ideal thermodynamic gas equation with considerations made for heat > capacities (gamma = Cp / Cv is the adiabatic index - the ratio of > specific heats). This might be sufficient for gases at densities well > below those found at the critical point, but at higher densities, the > fluid becomes 'incompressible'. > You might try a 'hardened' equation - one which has special with varying heat capacity in the ionisation zones. The deviation from ideality that does occur in stars at high density is well modeled by electron degeneracy pressure. Andrew Usher You must Sign in before you can post messages.
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