\begin{table}%t1
%\centering
\par
\caption{\label {peak}Characteristics of the emission lines.}
\begin{tabular}{c c c c c}
\hline \hline
Line & $\lambda$ & pEW  & {\it FWHM} & Luminosity\\
& (\AA) & (\AA) &  ($\rm{km ~~ s^{-1}}$) & $10^{-5}$~\Lsun \\
\hline
&&&&\\
\Ha\ & 6562.71 & --15.2 $\pm$ 0.1  & 69.9 $\pm$ 2 &  12.0  $\pm$ 0.1\\  
$[\rm{NII}]$ & 6548.05  & --0.82 $\pm$ 0.2 &  42.6 $\pm$ 1 & 0.6 $\pm$ 0.15\\
$[\rm{NII}]$ & 6583.45 & --2.46 $\pm$ 0.1 &  39.6 $\pm$ 0.5 &  1.9  $\pm$ 0.1\\
$[\rm{SII}]$ & 6716.44 & --1.22 $\pm$ 0.03 &  48.7 $\pm$ 0.4 & 0.6 $\pm$ 0.02\\
$[\rm{SII}]$ & 6730.82 & --1.60 $\pm$ 0.08  & 43.2 $\pm$ 0.4 & 0.8 $\pm$ 0.04\\
\hline
\end{tabular}
\end{table}