[Mesa-users] lithium abundance in convective core

Bill Paxton paxton at kitp.ucsb.edu
Wed Jan 15 10:29:32 EST 2020


Hi Sebastien,

Good to hear from you again!    

I’ll take a look at this using your inlist, but 1st I want to check on the mass of the model.  Your inlist doesn’t set the mass or initial_z.  What should those be?

Cheers,
bill



> On Jan 15, 2020, at 7:24 AM, Sébastien Deheuvels <sebastien.deheuvels at irap.omp.eu> wrote:
> 
> Hi Aaron,
> 
> Thanks for the answer.
>> 
>> It would be helpful for you to provide more information about the models you're looking at.  This will help us to provide an informative response.
> 
> Yes, I can provide information. I attach the inlist of my model. I also attach a plot of Li7 versus radius, with the convective part highlighted in purple, where it can be seen that the LI7 abundance is not constant in the core. I did rapid calculations, which indicate that the timescale for lithium burning is around 4 minutes in the center while the convective mixing timescale should be around 4 days (if I didn't make mistakes).
> 
> Cheers,
> 
> Sebastien.
> 
> <inlist>
> <li7.ps>
> 
> Le 15 janv. 2020 à 15:16, Aaron Dotter a écrit :
> 
>> Hi Sebastien,
>> 
>>  If it is indeed the case, I was wondering how MESA handles these very short timescales numerically.
>> 
>> It would be helpful for you to provide more information about the models you're looking at.  This will help us to provide an informative response.
>> 
>> Cheers,
>> Aaron
>> 
>>  
> 
> 
> -----------------------------------------------------------
> Sébastien Deheuvels
> Associate Professor
> University Paul Sabatier - IRAP - OMP
> 14 Avenue Edouard Belin 31400 Toulouse
> Tel. : +33 (0)5 61 33 28 20
> Mail : sebastien.deheuvels at irap.omp.eu <mailto:sebastien.deheuvels at irap.omp.eu>
> 
> _______________________________________________
> mesa-users at lists.mesastar.org
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> 

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