[mesa-users] Definition abundance in profile.data

[Hannah Brinkman]

Dear Aaron,
thanks for the hint.
However, this means I have to rerun over a hundred simulations. This is not
a huge problem, but I'd still like to know what the units are for the add
abundance in the profile.data files, just to understand my output better.
With kind regards,
Hannah

Op 2 dec. 2016 17:02 schreef "Aaron Dotter" <aaron.dotter at gmail.com>:

> Hi Hannah,
>
> Note that you can include various total abundance metrics in the history
> file by adding some of these lines to your history_columns.list:
>
>    ! mass totals for entire star (in Msun units)
>
>       total_mass h1
>       total_mass he4
>       ! etc.
>
>    ! log10 mass totals for entire star (in Msun units)
>
>       !log_total_mass h1
>       !log_total_mass he4
>       ! etc.
>
>    ! log10 mass fractions for entire star
>
>       !log_average h1
>       !log_average he4
>       ! etc.
>
>
> Cheers,
> Aaron
>
> On Fri, Dec 2, 2016 at 10:59 AM, Hannah Brinkman <brinkmanhe at gmail.com>
> wrote:
>
>> Dear all,
>> to get a better interpretation of the final state of my simulated stars,
>> I want to find the total abundance of elements in the star. I use the
>> standard set of isotopes and mesa version 8118.
>> Because the history.data only gives the abundance at the surface or at
>> the center, I wanted to use the final profile for the star to get the
>> stellar abundances.
>> However, when I multiply the abundance with the mass of the cell(dm), sum
>> these values, and divide this by the final stellar mass for each isotope,
>> which I thought should give the abundance of the isotope for the whole
>> star, and then add these abundances together, I get a number far larger
>> than 1.
>> This leads to my question, what is the definition of the abundance used
>> in the profile.data files? And how can I get the total abundance of the
>> isotopes for my star?
>> With kind regards,
>> Hannah Brinkman
>>
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>
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