\begin{table}%t8
\caption{Summary of the distances (${D}_\ast$) derived from our fits for sources
 with unconfirmed spectral classes.}\label{tab8}
%\centering
\small
\begin{tabular}{c c ccc}
\hline
\hline
 Sources & SpT & \multicolumn{3}{c}{${D}_\ast({\rm kpc})$}\\
&& V &  III &  I \\
\hline
IGR~J16195-4945 & B1 & $\sim$3.1&$\sim$5.7&$\sim$9.8\\
IGR~J16207-5129 & O7.5 &$\sim$1.8&$\sim$2.8&$\sim$4.1\\
IGR~J16418-4532 & O8.5 &$\sim$4.9&$\sim$8.3&$\sim$13\\
\hline
\end{tabular}
\end{table}