[mesa-users] Problem with the overshoot parameters

Matteo Cantiello cantiel at kitp.ucsb.edu
Mon Dec 17 17:14:53 EST 2012

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,


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 ------------------------
Kavli Institute for Theoretical Physics 
Room 1226 Kohn Hall CA 93106-4030
University of California, Santa Barbara
---------------- http://matteocantiello.com/

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