\begin{table}%t3
%\centering
\par
\caption{Molecular absorption lines detected in the optical spectra. Listed parameters are from Gredel et~al. (1993).}\label{Tab:Optical-absorption-lines}
 \begin{tabular}{ccc}
\hline \hline 
 Spec. &  ${\rm CH}$& ${\rm CH^{+}}$\\
\hline\noalign{\smallskip}
 Band & ${\rm A}^{2}\Delta\!\!-\!\!{\rm X}^{2}\Pi~(0,0)$ &
 ${\rm A}^{1}\Pi\!-\!{\rm X}^{1}\Sigma^{+}~(0,0)$ \\
%\hline
{ Line}&{  ${  R_{2e}(1)\!+\! R_{2f}(1)}$}&{  ${ R(0)}$}\\
%\hline
{ $\lambda$$(\textrm{\AA})$}& { $4300.313$}& { $4232.548$}\\
%\hline
{ $f$}& { $5.06\times10^{-3}$}& { $5.45\times10^{-3}$} \\
\hline
\end{tabular}  
\end{table}