\begin{table}%T1
\par
  \caption{The observed sample. \object{IRAS16293-2422}, which has
  been studied elsewhere (see text) is included for comparison.}
%\centerline
{
    \begin{tabular}{l l l l l l l l l}
      \hline
      \hline
      Source & $\alpha (2000)$ & $\delta (2000)$ & Cloud &
      Dist.$^{{a}}$ & $L_{\rm bol}$$^{{b}}$ &
      $M_{\rm env}$$^{{b}}$ & $L_{\rm smm} /
      L_{\rm bol}$$^{{c}}$ & $T_{\rm bol}$$^{{b}}$ \\
      &&&& (pc) & (\solarlum) & (\solarmass) & (\%) & (K)\\  
      \hline
      \object{NGC~1333-IRAS~4A} & 03:29:10.3 & +31:13:31 & Perseus & 220
      & 6 & 2.3 & 5 & 34\\
      \object{NGC~1333-IRAS~4B} & 03:29:12.0 & +31:13:09 & Perseus & 220
      & 6 & 2.0 & 3 & 36\\
      \object{NGC~1333-IRAS~2} & 03:28:55.4 & +31:14:35 & Perseus & 220
      & 16 & 1.7 & $\la$1 & 50\\
      \object{L1448-MM} & 03:25:38.8 & +30:44:05 & Perseus & 220 & 5 &
      0.9 & 2 & 60\\
      \object{L1448-N} & 03:25:36.3 & +30:45:15 & Perseus & 220 & 6 &
      3.5 & 3 & 55\\
      \object{L1157-MM} & 20:39:06.2 & +68:02:22 & Isolated & 325 & 11
      & 1.6 & 5 & 60\\
      \object{L1527} & 04:39:53.9 & +26:03:10 & Taurus & 140 & 2 & 0.9
      & 0.7 & 60\\
      \object{VLA1623} & 16:26:26.4 & --24:24:30 & $\rho$-Ophiuchus &
      160 &  1 & 0.2 & 10 & $<$35\\ \hline
      \object{IRAS~16293-2422}$^{{d}}$ & 16:32:22.7 & --24:38:32 &
      $\rho$-Ophiuchus & 160 & 27 & 5.4 &  2 & 43\\
      \hline
    \end{tabular}}
\par
    \medskip
      $^{{a}}$ {From \citet{Andre00}, except for Perseus
	sources \citep{Cernis90}.}\\
      $^{{b}}$ {From \citet{Jorgensen02}.}\\
      $^{{c}}$ {From \citet{Andre00}.}\\
      $^{{d}}$ {Included for comparison.}
  \label{sources}
\end{table}