[Mesa-users] Using make_o_ne_wd for a helium star
Charlie Sharpe
charliesharpe2101 at gmail.com
Fri Aug 6 00:59:19 UTC 2021
Hello MESA users,
I am trying to use the make_o_ne_wd test suite to model the entire life
cycle (birth to WD) of high mass stars (up to 10 solar masses, or more if
possible) of helium stars. This test case seems to be able to achieve this
assuming standard initial elemental abundances of 28% helium, 70% hydrogen,
etc. However, I am trying to model a star with a very high initial helium
abundance (75%+) with low metallicity. When I change the initial
composition to this, the model seems to reach to carbon burning before the
time step drops below 10^-6 seconds and the code is cut off. Terminal seems
to say that the dt_limit for the models before it crashes are either
'retry' or 'hold' (or 'max increase' of course), so I am not sure how to
gain any idea as to what would need to be changed here.
Any suggestions about what the process would be to resolve this?
I have attached the Trho_profile plot as well as the abundance plot at the
point where the time step causes the code to be cut out. I would attach the
inlists but they're basically identical to the ones in the make_o_ne_wd
test suite but with initial_y = 0.75 and initial_z = 0.000001.
Thanks in advance,
Charlie
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