\begin{table}%t2

\caption{\label{tab:source_props}Source properties and observational details.}
%\centering
\par
\begin{tabular}{l@{\extracolsep{2pt}}rrrl|l@{\extracolsep{2pt}}llll}
\hline \hline%\\[-3.5mm]
%\noalign{\smallskip}
Source & Distance & Luminosity    & Envelope Mass  & Type & RA      & Dec            & Obs. Date & Obs.id \\ 
       & [pc]     & [$L_{\odot}$] & [$M_{\odot}$]  &      & [h m s] & [${}^{\circ}~{\arcmin}~{\arcsec}$] &           &        \\
\hline%\\[-3.5mm]
%\noalign{\smallskip}
HH~46             & 450\tablefootmark{a} &  16\tablefootmark{b}   &   5.1\tablefootmark{b}  & Class I        &
08:25:43.9  & $-$51:00:36  & 2009-10-26 & 1342186315 (PACS)\\
                  &     &       &        &                &            &                        & 2010-04-17 & 1342194783 (HIFI)\\
TMR~1             & 140\tablefootmark{c}  &   3.7\tablefootmark{d}  &   0.12\tablefootmark{e}  & Class I        &04:39:13.7  & +25:53:21  & 2010-03-29 & 1342192984 (PACS)\\
IRAS~15398-3359   & 130\tablefootmark{f}  &   0.92\tablefootmark{g} &   0.5\tablefootmark{h}   & Class I        &15:43:01.3  & $-$34:09:15  & 2010-02-27 & 1342191302 (PACS)\\
DK~Cha            & 178\tablefootmark{i}  &  29.4\tablefootmark{j}  &   0.03\tablefootmark{j}  & Herbig Ae      &12:53:17.2  & 
$-$77:07:10.6            & 2009-12-10 & 1342188039 (PACS)\\
                  &     &       &        &                &            &                        & 2009-12-10 & 1342188040 (PACS)\\
NGC~7129~FIRS~2   &1260\tablefootmark{k}  & 500\tablefootmark{l}    &  50\tablefootmark{m}     & Intermed.-Mass &
21:43:01.7  & +66:03:23.6            & 2009-10-26 & 1342186321 (PACS)\\
NGC~1333~I~2A     & 235\tablefootmark{n}  &  20\tablefootmark{o}  &   1.0\tablefootmark{o}   & Class 0        &
03:28:55.6  & +31:14:37  & 2010-02-13 & 1342190686 (PACS)\\
                  &     &       &        &                &            &                        & 2010-02-24 & 1342191149 (PACS)\\
                  &     &       &        &                &            &                        & 2010-03-08 & 1342191773 (HIFI)\\  
\hline
Serpens~SMM1      & 415\tablefootmark{p}  &  82.9\tablefootmark{q}  &   8.7\tablefootmark{q}   & Class 0        &            &                        & --          & ISO\tablefootmark{r}               \\
NGC~1333~I~4      & 235\tablefootmark{n}  &   5.8\tablefootmark{o}  &   4.5\tablefootmark{o}   & Class 0        &            &                        & --          & ISO\tablefootmark{s}               \\
\hline
\end{tabular}
\tablefoot{\tablefoottext{a}{\citet{Heathcote96};}
\tablefoottext{b}{\citet{vanKempen09hh46};}
\tablefoottext{c}{\citet{Motte98};}
\tablefoottext{d}{\citet{Ohashi96};}
\tablefoottext{e}{\citet{Jorgensen02};}
\tablefoottext{f}{\citet{Murphy86};}
\tablefoottext{g}{\citet{Froebrich05};}
\tablefoottext{h}{\citet{vanKempen09b};}
\tablefoottext{i}{\citet{Whittet97};}
\tablefoottext{j}{\citet{vanKempen10digit};}
\tablefoottext{k}{\citet{Shevchenko89};}
\tablefoottext{l}{\citet{Johnstone10};}
\tablefoottext{m}{\citet{Crimier10};}
\tablefoottext{n}{\citet{Hirota08};}
\tablefoottext{o}{\citet{Jorgensen09};}
\tablefoottext{p}{\citet{Dzib10};}
\tablefoottext{q}{\citet{Hogerheijde99} ($L_{{\rm bol}}$ scaled to a distance of 415~pc);}
\tablefoottext{r}{\citet{Larsson02};} 
\tablefoottext{s}{\citet{Giannini01}.} } 
\end{table}