[Mesa-users] No mass loss secondary star binary with large nuclear network

[Rob Farmer]

Hi Hannah,

Thanks for the inlists, just checking but what mass loss are you expecting
to occur (and which isn't occurring) winds or rlof (or both)?

If its the wind mass loss that is missing, then I see you have a other_wind
routine, so if you add:

write(*,*) id, w

to your other wind routine, do you get output for both id=1 and id=2 (one
for each star?)

Rob

On Mon, 27 Sept 2021 at 10:50, Hannah Brinkman via Mesa-users <
mesa-users at lists.mesastar.org> wrote:

> Dear mesa-users,
>
> During one of my recent runs with a binary star in MESA, I noticed that my
> secondary star was not losing any mass. The star is fully evolved and
> behaves normally as far as I can see for a star of constant mass. However,
> when I use the same inlists and run_star_extras.f file with a smaller
> nuclear network (63 isotopes instead of 209), the star is losing mass, as
> it should. I did another test with a network of 125 isotopes, and the
> secondary is not losing mass for this network either.
>
> When I use the inlists for a single star, the star is behaving normally,
> and also the primary star of the binary star is behaving normally. Can
> someone explain to me what is going on with my secondary star? I've
> attached the inlists, run_star_extras.f and the 209 isotope network.
>
> With kind regards,
> Hannah
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> mesa-users at lists.mesastar.org
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>
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