[Mesa-users] White dwarf cooling for different compositions

Na'ama Hallakoun naama at wise.tau.ac.il
Tue Jul 10 08:47:18 EDT 2018


Hi Héctor,

Thanks a lot for the files! This is very useful.
I managed to run it with a different composition file, after I realized I
messed up with the mass parameter as you wrote, and I also increased the
num_steps_to_relax_composition (I guess that it was too much to relax the
composition to pure C, as I tried in the beginning).
Now it seems to run and I get different cooling curves for different
compositions. There is still some discrepancy when I try to compare the
resulting cooling curves with those of Bergeron (
http://www.astro.umontreal.ca/~bergeron/CoolingModels/) with a similar
composition, but at least it runs so I can try and figure it out. :)

Thanks again,
Na'ama

On Tue, Jul 10, 2018 at 2:28 PM Héctor MR <hector.mr at pitt.edu> wrote:

>   Hi Na'ama,
>
>   I have created a composition.dat file (n_shells = 1305 for wd_0.6.mod)
> with c12, o16 and ne22 in the core and a h1+he4 envelope that works for me
> (look at the IPython notebook). Note that, in MESA's profiles, m=0
> corresponds to the envelope. The attached movie shows the change in
> composition after 50 steps.
>
>   Best,
>
>
>   --
>   H.
>
>
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