\begin{table}%t2
\caption{\label{tab2}\label{tbl:CO_radio_parameters}Observational parameters for the Mopra $^{13}$CO observations.}
\small%\centering
\par
\begin{tabular}{lcc}
\hline
\hline
Parameter& \\
\hline
Rest frequency (GHz) & \multicolumn{2}{c}{110.201} \\
Total bandwidth (MHz)& \multicolumn{2}{c}{64} \\
Number of channels   & \multicolumn{2}{c}{1024} \\
Velocity resolution (km s$^{-1}$) & \multicolumn{2}{c}{0.17}\\
Beam size (\arcsec) & \multicolumn{2}{c}{34} \\
Date of observations & \multicolumn{2}{c}{7th July 2005}\\
Total integration time (hr) & \multicolumn{2}{c}{$\sim$1.5}\\
Obs. positions & RA(J2000) & Dec(J2000)\\
Map centre		& 15$\rm ^h55^m49.3^s$ & --54$^\circ$39\arcmin13\arcsec \\
Offset position		& 16$\rm ^h02^m17.6^s$ & --55$^\circ$19\arcmin12\arcsec \\
\hline
\end{tabular}
\end{table}