[Mesa-users] Post-AGB evolution

[Natalie Rees]

Hi Francis,

Thank you very much for that example, it does indeed run very nicely. I have had a look through the inlist and there are some interesting controls that I have not used before so I will experiment with those!

Thanks,
Natalie

From: Francis Timmes <fxt44 at mac.com>
Date: Thursday, 29 April 2021 at 02:07
To: Rees, Natalie R (PG/R - Physics) <n.rees at surrey.ac.uk>
Cc: Frank Timmes <fxt44 at mac.com>, mesa-users <mesa-users at lists.mesastar.org>
Subject: Re: [Mesa-users] Post-AGB evolution
hi natalie,

attached is an xz compressed tarball of a 15140 mesa work directory that begins
when the h-rich envelope mass is 0.01 msun and terminates at the top of the wd cooling track,
completing its gold2 tolerance, ~9500 cell, 30 isotope, post-agb journey in 310 timesteps.

after unpacking the tarball and a ./mk to build the executable, run it with

./rn 07_post_agb_to_wd_cooling_track_header

perhaps something can be gleaned from this example for your science.

fxt





> On Apr 26, 2021, at 6:06 AM, Natalie Rees via Mesa-users <mesa-users at lists.mesastar.org> wrote:
>
> Dear MESA Users,
>
> I have been evolving AGB stars to the end of the TP-AGB stage and am now trying to evolve them off the AGB and to the white dwarf cooling track. Unfortunately, I am finding the post-AGB evolution to be very slow (it is taking about 140,000 models to go from logTeff = 3.56 to 3.63). So, I am trying to figure out what is limiting the timestep as there is very little change in the structure variables. The terminal output for dt_limit often says "max increase", but this is not listed in the table for dt_limit in controls.defaults. Does anyone know what this means and/or have any tips for faster post-AGB evolution?
>
> Thanks,
> Natalie Rees
> _______________________________________________
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