[mesa-users] inquiry about changing alpha enhancement in MESA

[sarah yousefi]

Dear all,

I want to evolve a low mass star with alpha-enhanced chemical composition
using MESA. I have tried these options:

file_for_uniform_xa = ''
set_uniform_initial_xa_from_file = .false.
set_uniform_xa_from_file = .false.

Dose anybody know the relation between [alpha/Fe] and mass fraction of each
alpha element!? actually I want to evolve my model with different
metallicity and non-zero [alpha/Fe], but I need the mass fraction of each
element that related to the specific [alpha/Fe].

Is there any option in MESA we could import alpha enhancement ([alpha/Fe])
and work with it directly (instead of preparing a list of alpha elements
abundance)? Do I have any other choice for evolving my model with MESA?

and Do you have any suggestion about the "net" of this evolution ?

I appreciate your help and time in advance.

Best

Sarah
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