[Mesa-users] Standard Solar Model initialization

[Noah Tuchow]

Hello everyone,

I'm currently trying to run the Standard Solar Model in MESA with slightly
different initial conditions than those which are normally used (ie
different abundances, initial masses and mass loss rates). To this end I
have been focused on the test suit example "simplex_solar_calibration".
However I don't want to use the built in simplex optimizer, and I'd rather
use another, so I've modified the example to no longer use the
simplex_search_controls namelist and to do everything in star_job and
controls. I have this working so that I can almost exactly replicate the
output of test suite example (minus a tiny variation due to slight
differences in step sizes used), but find that both my model and the
test_suite example don't appear to be initialized from the premain sequence
and instead load a model from the file 'solar_calibration_input.mod'. I'd
like to know how exactly this model file was made and with what inlists.
I'm a bit confused as to what exactly the model I'm loading is, because
some of the arguments used in the solar calibration inlist in the example
appear to be for initializing a premain sequence model with from a cloud
with uniform composition, specified mass fractions and abundances. I've
noticed that MESA crashes if I keep all the inlist arguments the same
values and just start with set_uniform_initial_composition = .true. without
loading the model, and I think that this is likely due to
having which_atm_option = 'photosphere_tables'.  Since this example doesn't
appear to have any documentation, I'm curious to know how this model file
was made and what I should do to initialize a model for a slightly
different sun.  Does anyone have the inlists used to make the model file?

I'm running MESA 10398 on my CentOS 7 linux machine. I've attached the
inlist that I'm trying to get working without loading the model file. It's
pretty close to a copy of the test_suite example without the simplex search
controls inlist.

Thanks so much,
Noah Tuchow

Noah TuchowPenn State UniversityDepartment of Astronomy and Astrophysics532C
Davey LabUniversity Park, PA 16802
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