\begin{table}
%%%\centering
\par
%\caption{Constant mass ($\alpha'$) lost by MS stars (option b)}
%\begin{tabular}{ccccc}
%\hline
% \multicolumn{5}{c}{$M_{\rm min}=5~M_\odot$} \\
%\hline
%  x  & mass in stars      & mass in stars      & $\alpha'$ &  ratio \\
%     & of 0.5-5 $M_\odot$ & of 5-8 $M_\odot$   &          & 1st/2nd gen\\
%\hline
%-2.9   &     0.339        &	0.0146	   &0.029  &    22.7 \\
%-2.6   &     0.410        &	0.030      &0.054  &    13.3 \\
%-2.3   &     0.435        &	0.052      &0.099  &	8.1  \\
%-2.0   &     0.373        &	0.070	   &0.174  &	5.1  \\
%\hline
% \multicolumn{5}{c}{$M_{\rm min}=6~M_\odot$} \\
%\hline
%  x  & mass in stars      & mass in stars      & $\alpha'$ &  ratio \\
%     & of 0.5-6 $M_\odot$ & of 6-8 $M_\odot$   &          & 1st/2nd gen\\
%\hline
%-2.9   &     0.345        &	0.0086	   &0.0168 &   41.1 \\
%-2.6   &     0.422        &	0.0182	   &0.0323 &   23.7 \\
%-2.3   &     0.455        &	0.032	   &0.060  &   14.3 \\
%-2.0   &     0.398        &	0.045	   &0.109  &	9.0 \\
%\hline
% \multicolumn{5}{c}{$M_{\rm min}=7~M_\odot$} \\
%\hline
%  x  & mass in stars      & mass in stars      & $\alpha'$ &  ratio \\
%     & of 0.5-7 $M_\odot$ & of 7-8 $M_\odot$   &          & 1st/2nd gen\\
%\hline
%-2.9   &     0.350  	  &	0.0037     &0.0074   &  96.4  \\
%-2.6   &     0.432  	  &	0.0080     &0.0146   &  54.8  \\
%-2.3   &     0.472  	  &	0.0147     &0.0280   &  32.7  \\
%-2.0   &     0.422  	  &	0.0207     &0.051    &  20.6  \\
%\hline
%\end{tabular}
%\label{t:optionb}
%\end{table}