[Mesa-users] Evolution of a 9M_sun ZAMS star up to to core collapse

[amar at aries.res.in]

Dear MESA user team, 
I am trying to make a 9M_sun ZAMS model with Z=0.02 that explodes as a type IIb SN. Gladly, I could evolve the star up to the stage of Fe core infall, using the default star/test_suit/example_make_pre_ccsn with few modifications. Although I could evolve the model up to Fe core infall, I am not sure about a few parameters to be physical : 

Now here I briefly mention the changes in the inlist_files of example_make_pre_ccsn directory : 

a) In inlist_common, varcontrol_target = 1d-3, 
mixing_length_alpha = 2.0 
mixing_delta_coeff_for_highT = 2.5 
f = 0.007 (Not sure if this is allowed!) 
f0= 0.001 

b) In inlist_set_alpha_mlt, x_ctrl(21) = 2.5 
x_ctrl(22) = 1.5 
x_ctrl(23) = 0.5 
1) In Inlist_to_zams, varcontrol_target = 1d-5 

2) In inlist_to_zams, varcontrol_target = 1d-5 

3) In inlist_remove, varcontrol_target = 1d-5, 
mass_change = -1d-4 
star_H_mass_min_limit = 0.013 

4) In inlist_before_remove, ! varcontrol_target = 1d-2 (Not used) 
Steps_to_take_before_terminate = 2 

5) In inlist_to_si_burn, varcontrol_target = 5d-4, 
mixing_length_alpha = 0.01 (seems to be too low but anything greater than 0.01 did not worked, setting this to 0 also failed!!) 
6) In inlist_to_lgT9.9, varcontrol_target = 5d-4 

Please provide your valuable suggestions regarding f, f0, mixing_lenth_alpha, and other major mistakes if any in the above parameters. 

With best regards, 
Amar 


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