[Mesa-users] The nuclide mass fraction data read from the mod file is incorrect when switching networks

[Frank Timmes]

> ... how MESA sets the mass fraction for nuclides that are included in the new network but were not part of the old network.

see the fourth paragraph of section 6.2.2 of MESA III.

also, https://docs.mesastar.org/en/24.08.1/reference/star_job.html#adjust-abundances-for-new-isos

fxt





> On Jan 16, 2025, at 11:07 PM, Guo Li via Mesa-users <mesa-users at lists.mesastar.org> wrote:
> 
> Hi all,
> I hope this message finds you well.
> I am currently using MESA-r12778, and I would like to use different networks during various evolutionary stages of my model. However, I have encountered an issue where the nuclide mass fraction data read from the mod file seems to be incorrect when switching networks.
> Additionally, I would like to know how MESA sets the mass fraction for nuclides that are included in the new network but were not part of the old network.
> I appreciate your assistance and look forward to your response.
> Thank you!
> Best regards,
> Guo Li
> National Astronomical observatories,CAS
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> mesa-users at lists.mesastar.org
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>