\begin{table}%t3
%\centering
\par
\caption{Models for $\alpha$~Cen~A and B. The upper part of the table gives the observational constraints used for the
calibration. The middle part of the table presents the modeling parameters with their confidence limits, while the bottom
part presents the global parameters of the two stars. The mean large and small spacings and their respective errors 
are calculated exactly as in Bouchy \& Carrier (\cite{bo02}) and Carrier \& Bourban (\cite{ca03}).}
\label{tab:res}
\begin{tabular}{c|cc|cc}
\hline
\hline
 & \multicolumn{2}{c}{Model M1} & \multicolumn{2}{|c}{Model M2}  \\
 & \multicolumn{1}{c}{$\alpha$~Cen~A} & \multicolumn{1}{c|}{$\alpha$~Cen B} & \multicolumn{1}{c}{$\alpha$~Cen~A} & \multicolumn{1}{c}{$\alpha$~Cen B} \\ \hline
$M/M_{\odot}$  & $1.105$ & $0.934$ & $1.105$ & $0.934$ \\
$L/L_{\odot}$ & $1.522 \pm 0.030$ & $0.503 \pm 0.020$ & $1.522 \pm 0.030$ & $0.503 \pm 0.020$ \\
$T_{{\rm eff}}$ [K]& $5810 \pm 50$ & $5260 \pm 50$ & $5810 \pm 50$ & $5260 \pm 50$ \\
$R/R_{\odot}$ & $1.224 \pm  {0.003}$ & $0.863 \pm  {0.005}$ & $1.224 \pm  {0.006}$ & $0.863 \pm  {0.010}$ \\
$[$Fe/H$]_{{\rm s}}$ &  $0.22 \pm 0.05$ & $0.24 \pm 0.05$ &  $0.22 \pm 0.05$ & $0.24 \pm 0.05$ \\
$\Delta \nu_{0}$ [$\mu$Hz] & $105.5 \pm 0.1$  & $161.1 \pm 0.1$ & $105.5 \pm 0.1$  & $161.1 \pm 0.1$\\
$\delta \nu_{02}$ [$\mu$Hz] & $5.6 \pm 0.7$ & $8.7 \pm 0.8$ & $5.6 \pm 0.7$ & $8.7 \pm 0.8$\\
\hline
$t$ [Gyr] & \multicolumn{2}{c|}{$6.50 \pm 0.20$} & \multicolumn{2}{c}{$6.52 \pm 0.30$} \\
$\alpha$ & $1.83 \pm 0.10$ & $1.99 \pm 0.10$ & $1.83 \pm 0.10$ & $1.97 \pm 0.10$  \\
$Y_{{\rm i}}$ & \multicolumn{2}{c|}{$0.275 \pm 0.010$} & \multicolumn{2}{c}{$0.275 \pm 0.010$} \\
$(Z/X)_{{\rm i}}$ & \multicolumn{2}{c|}{$0.0435 \pm 0.0020$} & \multicolumn{2}{c}{$0.0434 \pm 0.0020$} \\
\hline
$L/L_{\odot}$ & 1.497 & 0.522 & 1.503 & 0.523 \\
$T_{{\rm eff}}$ [K]& $5769$ & $5270$ & $5769$ & $5266$ \\
$R/R_{\odot}$ & $1.227$ & $0.868$ & $1.229$ & $0.870$ \\
$Y_{{\rm s}}$ & 0.231 & 0.247 & 0.231 & 0.247 \\
$(Z/X)_{{\rm s}}$ & 0.0386 & 0.0402 & 0.0385 & 0.0402 \\
$[$Fe/H$]_{{\rm s}}$ &  $0.22$ & $0.24$ &  $0.22$ & $0.24$ \\
$\Delta \nu_{0}$ [$\mu$Hz] & $105.9 \pm 0.1$  & $161.7 \pm 0.1$ & $105.5 \pm 0.1$  & $161.1 \pm 0.1$\\
$\delta \nu_{02}$ [$\mu$Hz] & $4.6 \pm 0.6$ & $10.3 \pm 0.9$ & $4.6 \pm 0.6$ & $10.2 \pm 0.8$\\
\hline
\end{tabular}
\end{table}