[Mesa-users] ZAHB temperatures and Reimers parameter

Raphael Hirschi r.hirschi at keele.ac.uk
Thu Oct 19 14:22:39 EDT 2017


How much mass have the models actually lost up to that point? Not 100% 
sure but I suspect very little, hence the tiny difference between the 
two models


On 19/10/17 18:59, Adrian Ayala wrote:
> Hi, everybody!
> We are running two models (Reimers mass loss parameter, eta = 0.2 and 
> eta = 0.3). In both models, we have M = 0.82 solar mass, initial 
> helium mass fraction, Y = 0.248, and metallicity, Z =0.001.
> By the beginning of horizontal branch phase, we should obtain that the 
> two models have different Teff (higher in the case of the bigger 
> Reimers parameter). However,
> the Teff are practically the same for both models.
> I suspect we are making some mistake when introducing the initial 
> helium mass fraction (changing the default value of MESA) or when 
> turning on the mass loss mechanism.
> See in attach the inlist we use. Could anybody suggest how to detect 
> where the flaw is?
> Thank you very much in advance!
>
>
>

-- 
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+  Dr Raphael Hirschi            r.hirschi at keele.ac.uk +
+  Reader in Astrophysics (Associate Professor)        +
+  Astrophysics Group                                  +
+  School of Chemical and Physical Sciences            +
+  Keele University                                    +
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