[mesa-users] Evolving a white dwarf on the cooling sequence

Francesca Valsecchi valsecchi.francesca at gmail.com
Tue Jan 10 13:35:32 EST 2012


Hi Jing,

Thank you for the suggestion.
It looks like it worked!
>From a quick look at the HR diagram the WD is cooling down.
I also compared the evolution on the HR diagram with the evolution of a He
WD with the same mass provided by Deloye et al. (2007) and there is good
agreement between the two.

Thanks,

Fra

On Mon, Jan 9, 2012 at 5:58 PM, Jing Luan <jingluan at caltech.edu> wrote:

>  On 1/9/12 1:39 PM, Francesca Valsecchi wrote:
>
> Hi all,
>
>  I would like to use MESA to create white dwarf models of different
> masses and temperatures.
>
>  I created a He white dwarf using one of the test_suite runs and I am
> trying to evolve it on the cooling sequence.
>
>  I have tried using the test_suite called wd_cool, reading in input the
> He white dwarf model created, but I did not have success.
>
>  Is there any documentations on the various test_suite that deal with
> white dwarfs? Also any paper that used MESA to study white dwarfs would be
> useful.
>
>
>  Thank you very much!
>
>
>  Francesca
>
>
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> _______________________________________________
> mesa-users mailing listmesa-users at lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/mesa-users
>
>  Hello,
>
> I remember I once used mesa to deal with wd cooling and it worked well.
> Actually you do not necessarily need to go to test_suite. Here is my
> suggestion: copy a work directory, edit the inlist_project file to let mesa
> start with the model you already created, and let mesa run. When the T and
> P are too low for further nuclear fusion, the He WD is now on its cooling
> trace. There should be a variable indicating the luminosity resulted from
> nuclear burning ( maybe called Lnuc or something, you can check the file
> mesa/star/public/star_data.dek for the variable name), as long as Lnuc<<
> the total luminosity, the He WD is cooling down. MESA will continue running
> until the equation of state of the central matter is uncertain ( I remember
> it is when lgQ>some critical value, you can also check what lgQ is in
> MESA's document, probably also in the star_data.dek file).
>
> Good luck!
>
> --
> Sincerely
> Jing
>
> Ph.D candidate at physics.caltech
> email: jingluan at caltech.edu
> address: MC350-17,Caltech,1200 E.California Blvd
>          Pasadena, CA 91125
>
>
>
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