[Mesa-users] He star models evolve with high metallicity

[Ebraheem Farag]

Hello 辛文宇 (Wenyu),

Try 'use_superad_reduction = .true.'. You might want to turn this off,
after He burning.

-EbF



On Fri, May 5, 2023 at 2:17 AM 辛文宇 <xinwenyu16 at mails.ucas.ac.cn> wrote:

> Hi everyone,
>
>
> I'm trying to evolve the He star models in high metallicity with 'ppisn'
> in the test_suite.
>
> The models can go through with Z=1E-3 well. But when I use Z=0.01 or 0.02,
> the timesteps
>
> become very small after logT reaches 7.5 K (Model Number = 2000). Then
> from 2000 to 100000,
>
> logT increase from 7.5 to 7.6. The inlist file and screenshots are
> attached.
>
>
> I am not sure why this model cannot ignite He burning with high
> metallicity.
>
> In order to make this model go through with Z=0.01 or 0.02 well, besides
> initial_Z and Zbase,
>
> which parameters should also be changed ?
>
>
> Thanks very much!
>
> Wenyu
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