[mesa-users] Problem with the overshoot parameters

Dennis Stello stello at physics.usyd.edu.au
Mon Dec 17 17:21:58 EST 2012

...and check the the defintions of the overshoot parameters in the 
different codes are the same (and tranform if they are not).


On Mon, 17 Dec 2012, Matteo Cantiello wrote:

> Hi Umang,
> could you please be a little more specific?
> In particular:
> 1) What version of MESA are you using?
> 2) Is the physics in the models you are trying to compare the same (for example, are you sure the implementation of overshooting in the YREC and CESAM models is the same as in your calculations with MESA, so that you can directly compare the overshooting parameters?)
> 3) What kind of models have you been trying to evolve (Mass / Metallicity / Evolutionary Phase)?
> 4) If you are sure you are comparing apples to apples, and you still find large discrepancies, I would be very interested to have a look at some plots.
> I'm looking forward to hear about your findings,
> thanks!
> Matteo
> On Dec 17, 2012, at 2:01 PM, Umang Gupta wrote:
>> Hi,
>> I tried evolving some models with overshoot parameters (0.05), however the resulting models are not convincing as they do not match with the other tested older codes like YREC, and CESAM. I compared the results with this codes and there is a huge difference. The overshoot effect is much higher in MESA as compared to the other codes. I think there is some problem with the overshoot implementation
>> Kindly, let me know if there is a fix
>> Umang Gupta
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> Dr. Matteo Cantiello ------------------------
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> Room 1226 Kohn Hall CA 93106-4030
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Dennis Stello

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