[Mesa-users] Terminated evolution of F type star

[Kira McCracken]

Hello Diogo!

Thank you so much! That is incredibly helpful. I will go through that case
on the test suite and apply it to what I am working on.

Sincerely,
Kira

On Wed, Feb 19, 2025 at 5:13 PM Diogo Capelo <
diogo.capelo at tecnico.ulisboa.pt> wrote:

> Hello Kira, and welcome to using MESA.
>
> Evolving a 1.5 M_Sun star from the pre-Main Sequence all the way to a
> White Dwarf means going through some rather challenging evolutionary steps,
> which can be dominated by very different physical phenomena. These
> different scenarios often benefit from different approaches, and so, trying
> to evolve a star through the Main Sequence using the same controls as
> through the Helium flash is not optimal (and will, in fact, often fail).
> MESA can and will get your star through these stages, but in most cases,
> changing your inlist to handle the difficulties of each stage of evolution
> separately will result in a faster, more consistent model.
>
> I suggest you take a look at the test_suite case "1M_pre_ms_to_wd", which
> evolves a 1M_Sun star from the pre-Main Sequence (MS) to White Dwarf (WD).
> On it, ou will be able to identify several (six!) inlists:
> inlist_start
> inlist_to_end_core_h_burn
> inlist_to_start_he_core_flash
> inlist_to_end_core_he_burn
> inlist_to_end_agb
> inlist_to_wd
>
> Each of these inlists contains small changes that make a big difference
> when running a model through some specifically challenging steps like the
> RGB ascent, the Helium flash, or the AGB. My suggestion is that you read
> these inlists, and then seek out the controls in the documentation, and the
> Physics in the MESA papers. I learned a lot of stellar physics by trying to
> understand why a specific control is on an inlist.
>
> Examining the 'rn' file will also reveal some interesting built-in MESA
> functions that allow you to run several inlists without having to stop and
> restart by hand each time.
>
> Hope this helps!
>
> --
>
> Diogo
>
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