[mesa-users] Stellar Atmosphere

[Bill Paxton]

On Jun 3, 2015, at 11:33 AM, Chris Peacock wrote:

> Thank you very much, this explains my problem
> 
> Chris

you are welcome -- I always appreciate the chance to mention Paczynski! ;D

-b




> 
> On Wed, Jun 3, 2015 at 2:29 PM, Bill Paxton <paxton at kitp.ucsb.edu> wrote:
> Hi Chris,
> 
> The mesa star models go out to whatever optical depth you have fixed for the outer edge of the outermost cell -- (AKA "the surface" of the model).
> By default this means the photosphere, but you can revise it to larger or smaller values of tau (see wd_surf_at_tau_1m4 where the surface is moved out to tau = 1d-4).  But keep in mind that there is no advanced modeling of subtle effects in an atmosphere -- e.g., for RHD equations to take into account the gradual uncoupling of photons and gas.  We do use the venerable scheme of Paczynski 1969 to make adjustments for tau < 2/3 effects, but that's about it.
> 
> 
> 
> So, back to your question, it depends on what you mean by "atmosphere" and what sort of details you need.
> 
> Good luck,
> Bill
> 
> 
> On Jun 3, 2015, at 10:20 AM, Chris Peacock wrote:
> 
> > This may be a silly question, but I am looking into some atmospheric conditions of my wd (run from the wd_cool_0.6M module in test_suite), and I cannot find any information on atmosphere mass, composition, etc.  Is there anything I must include in my inlist in order to get his information, or is this a much simpler issue I am having?
> >
> > Many thanks,
> > ------------------------------------------------------------------------------
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> 
> 
> 

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