[Mesa-users] Any tips on making a brown dwarf?

Earl Bellinger earlbellinger at gmail.com
Mon Nov 19 10:37:58 EST 2018


...to answer my own question...

I have made some progress by setting:

    mesh_delta_coeff = 0.5
    varcontrol_target = 1d-5

    tol_correction_norm = 3d-4
    tol_max_correction = 3d-2

It has now evolved for at least tens of millions of years.

Best regards,
Earl

On Mon, Nov 19, 2018 at 4:15 PM Earl Bellinger <earlbellinger at gmail.com>
wrote:

> Hi mesa-users,
>
> When I try to run a very low-mass track, for example with M=0.05, MESA
> crashes after a couple hundred models (~300,000 years):
>
> hydro_newton_step failed to accept
> ...
> terminated evolution: cannot find acceptable model
> termination code: min_timestep_limit
>
> I have not changed much in the inlist besides the initial mass.
>
> I have tried several versions of MESA and also tried running the brown
> dwarf test suite, but to no avail.
>
> Any tips here?
>
> Best regards,
> Earl Bellinger
>
>
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