\begin{table}%t2 %\centering \caption{\label{abundances} Absolute abundances of neon and oxygen and the Ne/O abundance ratio of $\alpha$~Cen obtained with different methods. } \begin{tabular}{lcccc} \hline\hline &\multicolumn{2}{c}{$DEM$ modeling}& linear&Asplund\\ &method 1 &method 2 & combinations &et al.\\ \hline %Ne/H & $1.30\pm0.13$ & $1.49\pm0.40$ & --- & \\ %O/H & $0.72\pm0.01$ & $0.72\pm0.01$ & --- & \\ %Ne/O & $1.80\pm0.18$ & $2.08\pm0.56$ & $1.85\pm0.31$ & \\ Ne & $7.95\pm0.04$ & $8.01\pm0.13$ &-- &7.84\\ O & $8.52\pm0.01$ & $8.51\pm0.01$ &-- &8.66\\ $A_{\rm Ne}$/$A_{\rm O}$ & $0.27\pm0.03$ & $0.31\pm0.08$ & $0.28\pm0.05$& 0.15\\ \hline \end{tabular} \end{table}