[Mesa-users] Question about calculating electron densities for high mass stars

[Jeremy Sakstein]

Thanks Josiah,

Final question: does lnfree_e include positrons too?

If not I can calculate it from other quantities.

Cheers,

Jeremy

On Wed, May 6, 2020 at 1:14 PM Josiah Schwab <jwschwab at ucsc.edu> wrote:
>
> Hi Jeremy,
>
>> Is lnfree_e called in the star pointer? I am using this in other_neu so
I was hoping not to have to call the EOS twice.
>
>
> Why don't you check yourself?  It'll be good practice :)
>
>>
>> If not, does this info end up in s% ye(k) or does this only include
 electrons from ions?
>
>
> No, ye is defined relative to the ions, just zbar / abar.
>
> So I think values derived in these two ways should start to be different
once you have pair production and you can use the difference to get the
pair density.
>
> Josiah

>
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