[mesa-users] mesa release 4906 -- with radiative levitation

[Bill Paxton]

Hi Richard,

On Apr 12, 2013, at 12:06 PM, Richard Monier wrote:

> Hello Bill,
> 
>    Many thanks for your fast answer and explanations and the paper as well. I hopy I will one happy day find the time to run mesa with radiative diffusion and see how the predictions compare withe abundances we have derived for main sequence B, A, F stars in the various open clusters we have observed. It would be useful to work out the behaviour of phosophorus, gallium, strontium, zirconium and yttrium which are diagnoses of chemical peculiarities in HgMn Bp stars and a the SrCrEu Ap stars....but I am aware this must be a daunting task.

The missing piece for that is the opacity information.  Once some brave soul works that out, we can add it to mesa without much trouble.
> 
> The processes that counteract diffusion are important too (rotational mixing, turbulent diffusion?) as these stars rotate somehow.

You can use mesa to explore some of those issues too.  
We have (some) rotational mixing and 
both turbulent diffusion following Proffitt & Michaud (1991)
and radiation turbulence following Morel & Thevenin (2002). 

> 
> Many thanks for making this code public. Best wishes,
> 
> Richard


You are very welcome!

Cheers,
Bill