[mesa-users] Hook in HR when hitting max_age

[Bill Paxton]

Hi Radek,

Good news is that I can reproduce the last step "hook" -- will let you know as soon as I have a fix.

Cheers,
Bill





On Jan 30, 2014, at 1:09 AM, Radek Smolec wrote:

> Hi,
> 
> I am also playing with solar calibration, but in a traditional approach, i.e. I modify Zini,Yini and alpha to match L, R (Teff) and Z/X at 4.57x10^years. I have two questions:
> 
> When I use the stopping condition:
>  max_age = 4.57d9
> the last time step is adjusted to match the desired age. But in HR diagram it produces an artificial hook - see an example  Figure (magnified at the end of calculation) and inlist I used. The hook remains there for all the parameters I tried, sometimes it is smaller, sometimes it is very large. How can I get rid of it?
> (I am using 5819 so there should be no problems to reproduce it!)
> 
> Second question, as you see in the inlist I am using A09 mix. But how to do it consistently?
>  There are no lowT opacity tables for A09. There are for A09p (A09 + Przybilla modifications), while for high temperatures we have a09 only. Also I have to set the initial_zfracs. Fortunately, these are for both A09 and A09p, but none of the mixes can be used consistently. Has anyone played with low-temperature opacity tables with A09 and can share the tables? Now it seems that only with gn93/gs98 and OPAL the fully consistent calculations can be done (ie., we have gn93/gs98 for high temperature, low temperature and type-2 OPAL opacities).
> Cheers,
> Radek
> 
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