\begin{table}%t3
\caption{\label{table:sp}Stars classified towards N66A.}                   
%%\centerline

{\small          
\begin{tabular}{l l l l l l l l}
\hline\hline
Star ID & $\alpha$ (2000) & $\delta$ (J2000) & $V$ & $V-I$ &  $ B-V$ &
Previous classification{$^\dag$} & This work \\
\hline
N66A-1  & 00:59:14.93 & $-72$:11:01.9 & 15.97 & $-0.18$ &  &  & O8 V    \\
MPG 445 & 00:59:04.79 & $-72$:11:03.1 & 15.33 & & $-0.18$ & O7.5 V (a) & O8 V     \\
MPG 455 & 00:59:05.44 & $-72$:10:42.4 & 15.25 & & $-0.19$ &  & O9.5 V   \\
MPG 595 & 00:59:11.91 & $-72$:10:55.8 & 15.62 & & $-0.20$ & B0 V (b)  & B0-0.5 V  \\
MPG 655 & 00:59:15.51 & $-72$:11:11.6 & 14.82 & & $-0.15$ & O6 V (b) & O5 V + OB  \\
\hline       
\end{tabular}}
\tablebib{{$\dag$} {(a) \citet[][]{Niemela86}; (b)  \citet[][]{Massey89}.}} 
\end{table}