File Syntax and Content

Files are named m[M]z[Z][A], where
  • M is the star's initial mass (in solar units),
  • Z is the star's initial metallicity (in mass fraction) and
  • A is an additional character specifying a particular feature of the computed model (optional).
Four files are available for each stellar model, namely
  • file.hrd : HRD information
    • model : model number,
    • phase : phase number (1 for PMS, 2 for MS, 3 for Post-MS, ...),
    • L : surface luminosity (in solar units),
    • Mbol : corresponding bolometric absolute magnitude,
    • Reff: radius at photosphere (in solar units),
    • R* : stellar radius at optical depth = 0.005 (R, in solar units),
    • Teff : temperature at $\tau =$ 2/3. This is actually slightly different from the effective temperature defined as $T_\mathrm{eff} = (L/(4\pi \sigma Rē)^{1/4}$ (in K),
    • rho_eff : photospheric density (in cgs),
    • log g : surface gravity (in log10 of cgs),
    • M : total mass (M, in solar units) and
    • age : age (in yr).
  • file.var1 : internal structure
    • model : model number,
    • Tc : central temperature (in K),
    • rhoc : central volumic mass (in cgs),
    • etac : central degeneracy parameter value,
    • M_core : mass coordinate of the central burning core (in solar units),
    • R_core : radius coordinate of the central burning core (relative to the total radius),
    • Lnuc : contribution of nuclear energy production to the total luminosity (relative to the surface luminosity),
    • Lgrav : contribution of $\epsilon$(grav) to the total luminosity (relative to the surface luminosity),
    • k2_conv : moment of inertia of the convective envelope (in units of total M*R**2),
    • k2_rad : moment of inertia of the central radiative core (in units of total M*R**2).
  • file.var2 : convection
    • model : model number,
    • Mconv1 : mass coordinate of the top of the convective core (in solar units),
    • Rconv1 : radius at the top of the convective core (normalized to the total radius),
    • Menv_bot : mass coordinate of the bottom of the convective envelope (in solar units),
      0 means fully convective star and no convective core
    • Renv_bot : radius of the bottom of the convective envelope (normalized to the total radius),
      0 means fully convective star and no convective core
    • Tenv_bot : temperature at the bottom of the convective envelope (in log10 of K),
    • rho_bot : volumic mass at the bottom of the convective envelope (in log10 of cgs).
  • file.xsurf : surface abundances
    • model : model number,
    • X(2H) : surface mass fraction of 2H,
    • X(3He) : surface mass fraction of 3He,
    • X(6Li) : surface mass fraction of 6Li,
    • X(7Li) : surface mass fraction of 7Li,
    • X(9Be) : surface mass fraction of 9Be,
    • X(10B) : surface mass fraction of 10B,
    • X(11B) : surface mass fraction of 11B.