[Mesa-users] Overshooting in MESA

[Jelena Petrović]

Dear all,

Could you please let me know how to switch on overshooting in my MESA 
models (massive stars in range 30 to 40 Ms)?
I need to use r10398 version, as I should compare results with my old 
models made with this version.

I assume default models do not include overshooting at all.. Is that 
correct?
Some parameters in controls.defaults are not zero, such as:
min_overshoot_q = 1d-3
D_mix_ov_limit = 1d2
Is there maybe some minimal overshooting included by default?

There are various parameters such as:
overshoot_scheme(:) = '' ! ``exponential``, ``step``, ``other``
overshoot_zone_type(:) = '' !  ``burn_H``, ``burn_He``, ``burn_Z``, 
``nonburn``, ``any``
overshoot_zone_loc(:) = '' ! ``core``, ``shell``, ``any``
overshoot_bdy_loc(:) = '' ! ``bottom``, ``top``, ``any``

Since I need to calculate helium core masses, I guess I should choose 
'step', 'burn H', 'core' and 'top'?

I am also not sure what else do I need to include and what values should 
be used for:
overshoot_f(:) = 0d0
overshoot_f0(:) = 0d0

Many thanks!
Jelena