\begin{table}%t1 \caption{\label{imodtab}Some properties of the initial model.} \small%\centerline { \begin{tabular}{l|lllllllll} \hline\hline Model & $M$ & Pop. & $Z$ & $M_{\rm He}$ & $R_{\rm He}$ & $L_{\rm He}$ & $T_{\rm max}$ & $r_{\rm max}$ & $\rho_{\rm max}$ \\ & $[\Msun]$ & & & $[\Msun]$ & $[10^9\cm]$ & $[10^9\Lsun]$ & $[10^8\K]$ & $[10^8\cm]$ & $[10^5\gcm]$ \\ \hline M & $1.25$ & I & $0.02$ & $0.47$ & $1.91$ & $1.03$ & $1.70$ & $4.71$ & $3.44$ \\ \hline \end{tabular}} \medskip Total mass~$M$, stellar population, metal content~$Z$, mass~$M_{\rm He}$ and radius~$R_{\rm He}$ of the helium core~($X(^{4}{\rm He}) > 0.98$), nuclear energy production in the helium core~$L_{\rm He}$, temperature maximum~$T_{\rm max}$, radius~$r_{\rm max}$, and density~$\rho_{\rm max}$ at the temperature maximum. \end{table}