[Mesa-users] How is defined the upper limit of the star core?

[Roque Caballero Navarro]

Hi there,

    How is defined the upper limit of the star core? For example, I'm 
using the following stop condition for finishing the simulation where 
the TAMS is reached:

       ! stop when the center mass fraction of h1 drops below this limit
       xa_central_lower_limit_species(1) = 'h1'
       xa_central_lower_limit(1) = 1d-9

Which condition determines the outermost limit of the center?

Kind regards,

Roque