[Mesa-users] Pitfalls of eosPTEH?

[Bill Paxton]

Are you reusing old models or building new ones?  

For the cases you mention, the differences between the older eos and PTEH could be large, so it might not be possible to load a model created with the one and expect it to work with the other.

-b




> On Dec 28, 2018, at 1:16 AM, Zhang, Zhaoxi M. (Michael) <mz at astro.caltech.edu> wrote:
> 
> Hello MESA users & developers,
> 
> I'm trying to reproduce the simulations I did for my paper (https://arxiv.org/abs/1812.08793 <https://arxiv.org/abs/1812.08793>) with the latest MESA code, but they fail immediately with a lot of retries and backups.  I managed to determine that version number 10,204--specifically, the introduction of eosPTEH--is what broke my simulations.  Turning off PTEH by setting use_eosPTEH_with_eosDT = .false. and use_PTEH_for_high_Z = .false. fixes the problem.
> 
> Is there a reason why PTEH isn't good to use in my scenario, namely iron enriched C/O white dwarfs with hot inflated envelopes?  Reading the latest release notes, it seems like low density and high metallicity environments are precisely what PTEH is meant for, so I have no idea why MESA can't even find a first model.  
> 
> Thanks for any help,
> 
> 
> Michael
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