[Mesa-users] A question about the default "core_mass" entry of profile_columns.list

[Francis Timmes]

hi levi,

mesa offers a variety of definitions for core masses.

for 15140

https://docs.mesastar.org/en/r15140/reference/controls.html#c-core-boundary-he4-fraction

https://docs.mesastar.org/en/r15140/reference/controls.html#o-core-boundary-c12-fraction


for 22.05.1

https://docs.mesastar.org/en/release-r22.05.1/reference/controls.html#co-core-boundary-he4-fraction

https://docs.mesastar.org/en/release-r22.05.1/reference/controls.html#one-core-boundary-he4-c12-fraction


given the default values, the results quoted below make sense.
you can set these inlist control parameters to -1 to get a core mass definition that may be more what you want.

fxt





> On Sep 5, 2022, at 9:32 PM, Levi via Mesa-users <mesa-users at lists.mesastar.org> wrote:
> 
> Dear MESA-users,
> 
> I recently used a profile file to draw a diagram to show the elemental abundance distribution of a helium star at iron core collapse, which puzzled me.
> First, the value output in the profile file is
> c_core_mass                                             o_core_mass
> 1.8878532932090049E+001                  6.0420723232834375E+000.
> But the diagram show that the carbon/oxygen core mass and oxygen core mass are significantly larger.
> Attach a diagram of the elements abundance.
> 
> I'd be grateful for any suggestions.
> 
> All the best,
> Levi
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