\begin{table}%t6
\caption{\label{newso}New \so~candidates.}
\small        
%\centerline
{     
\begin{tabular}{l c c c c c c c l}   
\hline    
\hline    
\multicolumn{3}{c}{} &
\multicolumn{2}{c}{Palomar survey} &
\multicolumn{2}{c}{Calar survey} &
\multicolumn{2}{c}{} \\
IAU name                 &RA (J2000)&Dec (J2000)&$z'$          &$i'-z'$      &$z'$          &$i'-z'$      & $I^{{a}}$ &Phot. Prob.\\
      & ($^{\rm h}$ ~ $^{\rm m}$ ~ $^{\rm s}$)&($^\circ$ ~ $'$ ~ $''$)&              &             &              &             &     &           \\
\hline\noalign{\smallskip}
S~Ori~J053724.5$-$021856$^{{b}}$ &05 37 24.46&$-$02 18 55.7&              &             &16.58~$\pm$~0.21&1.12~$\pm$~0.29&17.07&high      \\
S~Ori~J053855.0$-$024034 &05 38 54.95&$-$02 40 33.6&17.69~$\pm$~0.21&1.64~$\pm$~0.29 &              &             &18.24&high      \\
S~Ori~J053734.5$-$025559 &05 37 34.51&$-$02 55 58.5&              &              &17.79~$\pm$~0.21&1.35~$\pm$~0.30&18.35&high      \\
S~Ori~J053908.4$-$023902 &05 39 08.38&$-$02 39 01.9&18.03~$\pm$~0.22&1.22~$\pm$~0.31 &              &             &18.60&low       \\
S~Ori~J053912.6$-$025724 &05 39 12.60&$-$02 57 23.9&18.69~$\pm$~0.21&1.30~$\pm$~0.29 &              &             &19.29&low       \\
S~Ori~J053731.9$-$021634$^{{b}}$ &05 37 31.89&$-$02 16 33.8&              &             &19.03~$\pm$~0.21&1.49~$\pm$~0.29&19.65&high      \\
S~Ori~J053946.3$-$022631 &05 39 46.33&$-$02 26 31.3&              &              &19.70~$\pm$~0.29&1.51~$\pm$~0.39&20.36&low       \\
S~Ori~J053913.9$-$021621$^{{b}}$ &05 39 13.94&$-$02 16 21.2&              &             &19.80~$\pm$~0.21&1.73~$\pm$~0.29&20.47&high      \\
S~Ori~J053813.5$-$021934$^{{b}}$ &05 38 13.54&$-$02 19 34.2&              &             &20.13~$\pm$~0.21&1.48~$\pm$~0.29&20.83&low       \\
S~Ori~J053758.0$-$025146 &05 37 57.98&$-$02 51 46.1&              &              &20.63~$\pm$~0.26&1.59~$\pm$~0.38&21.38&low       \\
S~Ori~J053957.4$-$025006 &05 39 57.40&$-$02 50 06.2&              &              &21.26~$\pm$~0.22&1.95~$\pm$~0.32&22.10&high      \\
S~Ori~J053919.2$-$025910 &05 39 19.23&$-$02 59 10.4&21.60~$\pm$~0.28&1.84~$\pm$~0.38 &              &             &22.50&low       \\
S~Ori~J054007.8$-$022234 &05 40 07.75&$-$02 22 34.3&              &              &21.65~$\pm$~0.22&1.79~$\pm$~0.33&22.56&low       \\
S~Ori~J053844.5$-$025514$^{{c}}$ &05 38 44.54&$-$02 55 14.3&21.66~$\pm$~0.27&2.02~$\pm$~0.38&      &      &22.57&high      \\ 
S~Ori~J054008.5$-$024551$^{{c}}$ &05 40 08.51&$-$02 45 50.6&              &              &21.85~$\pm$~0.22&1.91~$\pm$~0.44&22.80&low       \\
S~Ori~J053932.4$-$025220$^{{c}}$ &05 39 32.43&$-$02 52 20.2&21.99~$\pm$~0.22 &1.85~$\pm$~0.40&21.91~$\pm$~0.22&2.13~$\pm$~0.40&22.87&high    \\
S~Ori~J053732.3$-$022842 &05 37 32.32&$-$02 28 42.1&              &              &22.09~$\pm$~0.23&1.98~$\pm$~0.37&23.09&low       \\
S~Ori~J053816.3$-$022727 &05 38 16.38&$-$02 27 27.1&              &              &22.18~$\pm$~0.24&1.85~$\pm$~0.37&23.20&low       \\
\hline
\end{tabular}}
\smallskip
$^{{a}}$  Estimated from the $z'$ photometry;
$^{{b}}$  also in  B\'ejar et al$.$ (\cite{bejar06});
$^{{c}}$  also in  Caballero et al$.$ (\cite{caballero06}).
\end{table}