[mesa-users] The mass and radius of the Sun

Michal Simon michal.simon at stonybrook.edu
Wed Jan 27 11:45:12 EST 2016


Please let us know what value of mixing length parameter you settle on.
Mike

On Wed, Jan 27, 2016 at 11:28 AM, Warrick Ball <
wball at astro.physik.uni-goettingen.de> wrote:

> I am!  If it wasn't clear, I'm optimizing:
>
> - the mixing length parameter alpha,
> - the initial helium, and
> - the initial metallicity
>
> to fit
>
> - the luminosity,
> - the radius, and
> - the surface metallicity
>
> of the Sun, at age 4.61 and with all models computed with one solar mass.
> This is what I call a "classical" calibration, in the sense that it doesn't
> use any information that is inferred from helioseismology (e.g. helium
> abundance, convection zone depth).
>
> One potential culprit (and the one I'm currently playing with) is the
> choice of atmospheric model.  This affects the mixing length parameter and
> thus, as you say, potentially also the base of the convection zone.
>
> W
>
> On Wed, 27 Jan 2016, Adam Jermyn wrote:
>
> Hi Warrick,
>>
>> Are you also changing the mixing length parameter? That can have an
>> impact on things like the convective boundary location...
>>
>> Adam
>>
>>
>
> ------------
> Warrick Ball
> Postdoc, Institut für Astrophysik Göttingen
> wball at astro.physik.uni-goettingen.de
> +49 (0) 551 39 5069
>
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