[mesa-users] make naked WD models

[Philip D. Hall]

Dear Hailiang,

I have used two methods to make naked WDs with uniform composition.

1. Evolve a pre-MS star of the desired composition with nuclear burning
switched off until it becomes a WD. The attached
inlist_make_co_wd_from_prems achieves this with r8845. The pre_ms_T_c
parameter may need to be tweaked.

2. Make a WD with an envelope (as in make_co_wd) then change the
composition using set_uniform_initial_xa_from_file = .true. or similar.

If you want a naked WD with an evolutionary composition (and thermal)
profile then maybe relax_initial_composition could be an alternative to
mass-loss, but I have no experience of how well it works for this problem.

Philip D. Hall
Armagh Observatory


On 29 September 2016 at 10:08, chenhl <chlcrazyboy at gmail.com> wrote:

> Dear all,
>
> I used star/test_suite/make_co_wd and star/test_suite/make_o_ne_wd to make
> CO and ONe WD models.  Normally, the CO or ONe WDs produced with these test
> suite cases are surrounded by a zone of unburnt material (i.e. He-rich or
> CO-rich material, respectively).  But I want to make 'pure' WD models,
> which do not have such unburnt material.  I have tried to adjust the
> initial mass and wind efficiency. But I still failed to make it. Is there
> anyone have experience on this?
>
>
> Best wishes,
> Hailiang
>
>
>
>
>
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