[mesa-users] wd asteroseismology

[Choi, Jieun]

Ooops, apologies for the redundant response! Didn't see Rob's email!

On Wed, Sep 28, 2016 at 2:37 PM, Choi, Jieun <jieun.choi at cfa.harvard.edu>
wrote:

> Hi Jing,
>
> The "redo with smaller timestep to get closer to stopping target" message
> in the terminal output is not a problem.
>
> The inlist you attached contains:
>
>       xa_central_lower_limit_species(1) = 'h1'
>       xa_central_lower_limit(1) = 0.001
>
>       when_to_stop_rtol = 1d-5
>       when_to_stop_atol = 1d-5
>
> This is telling MESA to stop the calculations when the central hydrogen
> abundance reaches 0.001, or 0.1000000000E-02. Your inlist also specifies
> the desired relative and absolute error tolerances (read about them here:
> http://mesa.sourceforge.net/controls_defaults.html#when_to_stop_rtol). So
> MESA is simply reducing the time steps as it nears the end of the evolution
> in order to meet those stopping criteria.
>
> Hope this helps!
>
> -Jieun
>
> On Wed, Sep 28, 2016 at 2:03 PM, Jing Luan <jingluan.xw at gmail.com> wrote:
>
>> Hello,
>>
>> I used star/test_suite/wd_surf_tau_1m4 to make a 0.6Msun white dwarf
>> with Teff=10195 and log(g)~8. I input this model to
>> star/test_suite/adipls_pulse to calculate its g mode frequency map.
>> However, it does a lot of redos reducing the time step, one example of the
>> output in the terminal is quoted below:
>>
>> 1st model retry log10(dt/yr)   -1.7921584698646690D+01
>>
>>
>> redo with smaller timestep to get closer to stopping target
>> 0.1167063354E-58    0.1000000000E-02
>>
>>        6021   6.958330   9942.668  -3.863284  -3.863284   0.604404
>> 0.000107   0.000000   0.000000   0.303811   0.000078 391.960076   1310
>> 0
>>
>>  -17.921585   6.579841  -1.895884 -48.202552  -5.392151 -99.000000
>> 0.604297   0.000000   0.723766   0.034697   0.013251  87.435464    114
>> 1
>>
>>  6.1943E+08  23.296547  -2.848282 -19.566950   5.509990  -6.203180
>> 0.578631   0.252617   0.019530  1.000E+00  9.867E-01  0.185E+08
>> varcontrol
>>
>>
>> Anyone has some clue what might be wrong. Three files are attached.
>>
>> 1, The white dwarf model file
>>
>> 2,The beginning part of the terminal output is also attached.
>>
>> 3, inlist file
>>
>>  Many thanks :-D
>>
>> Sincerely,
>>
>> Jing
>>
>> ------------------------------------------------------------
>> ------------------
>>
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>>
>>
>
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