[mesa-users] Tricks to create CO white dwarfs

[Aaron Dotter]

Hi Pablo,

What are the initial and current masses of the stars when you have
convergence issues?

Do you find regions in these stars where Pgas/P << 1?

If you're experiencing this sort of problem, there are a few "engineering"
tricks, like limiting max opacity or MLT++, that will get you through
faster.  Otherwise you need patience.

Aaron


On Saturday, May 16, 2015, Pablo Marchant <pamarca at gmail.com> wrote:

> Hi all. For the last days I've been playing with some systems that will
> end their lives as CO white dwarfs, but I always run into convergence
> problems close to stripping the CO core. At that point maybe it manages to
> go through after several hundred thousand steps, but that makes it a bit
> unpractical if I want to model several. So I was wondering if others with
> experience on the topic could share their tricks to get through this phase.
>
> I know the test_suite case make_co_wd makes use of MLT++, so in particular
> I'm looking to find if others have managed to get things to work with plain
> old MLT.
>
> Cheers!
>
> --
> Pablo Marchant Campos
> M.Sc on Astrophysics, Universidad Católica de Chile
> PhD student, Argelander-Institut für Astronomie
>
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