\begin{table}%T1
\par
%\centering
\par
\caption{Sources falling in the RGS field of view with an EPIC flux more
than 20\% that of $\sigma$~Ori~AB. Count rates are MOS equivalent count
rates. Identified stars are all members or candidate members of the
$\sigma$~Ori cluster. 
\label{tab:sources}}
\begin{tabular}{cccrlcrrl}
\hline\hline
$N_x$& RA$_x$& Dec$_x$& Count rate& Opt. ID& Offset& $V$& $B-V$& Sp. type \\
& \multicolumn{2}{c}{(2000)}& (cts/ks)& & ($\arcsec$)& & & \\ 
\hline
%----------------
1& $5\>38\>44.86$& $-2\>36\>00.2$& $439.9 \pm 2.5$& 
  $\sigma$~Ori~AB& 1.17& 3.78& $-0.24$& O9.5V\\
2& $5\>38\>47.26$& $-2\>35\>39.9$& $199.4 \pm 1.7$& 
  $\sigma$~Ori~E & 1.08& 6.70& $-0.18$& B2Vp \\
3& $5\>38\>38.54$& $-2\>34\>55.5$& $138.8 \pm 1.4$& 
  GSC 4771-1147  & 0.91& 12.24&  $1.18$& K5  \\
4& $5\>38\>41.34$& $-2\>37\>22.3$& $107.2 \pm 1.2$& 
  r053841-0237   & 0.82&     &      & K3 \\
%----------------
\hline
\end{tabular}
\end{table}