[mesa-users] dlnRho_dlnPgas_const_T = 0 problem for 0.5-1.5 solar mass models (multimass)

Robert FARMER rjfarmer at asu.edu
Fri Jun 12 11:11:59 EDT 2015


You cant change the example solar model mass because it is loading a mod
file 'solar_calibration_input.mod' which will allready have the mass set.
What you could do is look at the 1M_pre_ms_to_wd as a starting point and
vary the mass in that test suite problem

Try setting
      change_lnPgas_flag = .true.
      new_lnPgas_flag = .true.

in the star_job section. This might work to give you non zero
dlnRho_dlnPgas_const_T

Rob

On Fri, Jun 12, 2015 at 7:14 AM, Ireland, Lewis <lgi201 at exeter.ac.uk> wrote:

>  Hi everyone,
>
>  I am using the multimass test suite to create simple 1D models of
> 0.5-1.5 solar mass stars in 0.1 solar mass increments. I want to collect
> the data for dlnRho_dlnPgas_const_T from each model, but
>  dlnRho_dlnPgas_const_T = 0 throughout when I look at the results. When I
> used example_solar_model to model a 1 solar mass star, I obtained non-zero
> values for dlnRho_dlnPgas_const_T, and I want the same for the other masses.
>
>  Why does dlnRho_dlnPgas_const_T = 0 throughout the models in the
> multimass test suite? Can I use example_solar_model and vary the mass to
> obtain the results I want? When I tried changing initial_mass in the
> example_solar_model inlist, the final mass always ended up at 1 solar mass.
>
>  Thank you!
>
>  Lewis
>
>
>
>
>
>
>
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