[Mesa-users] Cooling a CO White Dwarf

[Josiah Schwab]

Please keep your replies on mesa-users.

Thanks for the quick response. That's annoying to hear. However, the same
> issue doesn't seem to arise when I develop a normal star (i.e. our sun).
> For example, the 1M_pre_ms_to_wd test suite case will go all the way does
> to 2500K for a normal 1M (or even 1.75M) star. I have attached a photo of
> the abundances for a 1.75M star at the time where fusion is no longer
> occurring. It doesn't seem to differ drastically from the 75% helium 1M
> case (attached in prev message). It seems odd that it would cool so much
> for this star but not for the Helium star. Any thoughts as to why this
> could be the case? I could be pulling at straws here, but this seems to
> suggest there should be a way to cool the 75% He 1M star.
>

Models with different masses and composition profiles will realize
different conditions in terms of density and temperature.  The coverage
limits of the EOS and opacities are also dependent on the chemical
composition.

If you are interested in pushing the limits of WD cooling models in MESA
you will have to invest some time and energy thinking carefully about the
input physics and its limitations.

Josiah
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