\begin{table}%t1
%\centering
\par
\caption{\label{sourcesl1457}1.2mm sources in L~1457.}
\begin{tabular}{l l l l l l l l l l }
\hline\hline
\noalign{\smallskip}
 Source & RA       & Dec.   & Size & Radius & Peak $F_\nu^{\rm beam}$ & Peak $N_{\rm H_2}$ & $F_\nu$ & $M_{\rm H_2}$ &
Virial mass  \\
           & (J2000)  & (J2000)  &($\arcsec\times\arcsec$) & (pc) &(mJy/beam)& (cm$^{-2}$) & (Jy)  & (\mo) & (\mo)  \\
\noalign{\smallskip}
\noalign{\hrule}
\noalign{\smallskip}
L~1457-A   & 2:56:00.6 & 19:26:17 &  $67\times46$ & 0.07 & $20\pm1$ & $1.3 \times 10^{22}$& $0.23\pm0.03$ & 1.0 & $\le$$ 3  $  \\
L~1457-B   & 2:56:07.0 & 19:27:10 &  $57\times40$ & 0.06 & $17\pm1$ & $1.1 \times 10^{22}$& $0.17\pm0.02$ & 0.7 &  $\le$$ 4 {-}10$\\
L~1457-C   & 2:56:13.5 & 19:27:30 & $146\times56$ & 0.11 & $17\pm1$ & $1.1 \times 10^{22}$& $0.74\pm0.05$ & 3.1 & $\le $$5 $   \\
L~1457-C1   & 2:56:17.2 & 19:27:04 & $54\times55$ & 0.08 & $17\pm1$ & $1.1 \times 10^{22}$& $0.21\pm0.03$ & 0.9 & $\le$$ 3$ \\
\noalign{\hrule}
\end{tabular}
\end{table}