\begin{table}%t1
\caption{\label{table:1}Molecular cores in IC~1396~N.}             
\par
\small%\centerline
 {
\begin{tabular}{l c c c c c c c c c c}      
\hline\hline \noalign{\smallskip}      
\multicolumn{1}{c}{Source}  & 
\multicolumn{1}{c}{RA(2000)} &  
\multicolumn{1}{c}{Dec(2000)} &
\multicolumn{1}{c}{Size} &  
\multicolumn{1}{c}{$T$}  &  
\multicolumn{1}{c}{Mass} & 
\multicolumn{1}{c}{$N$(H$_2$)} &    
\multicolumn{1}{c}{$X$(N$_2$H$^+$)} &  
\multicolumn{1}{c}{$X$(CH$_3$CN)} &
\multicolumn{1}{c}{[CH$_3$CN]/[N$_2$H$^+$]} &  
\multicolumn{1}{c}{$\Delta v$} \\
\multicolumn{1}{c}{}  &  
\multicolumn{1}{c}{} & 
\multicolumn{1}{c}{}  &   
\multicolumn{1}{c}{} &
\multicolumn{1}{c}{(K)} & 
\multicolumn{1}{c}{($M_\odot$)} & 
\multicolumn{1}{c}{(cm$^{-2}$)} & 
\multicolumn{1}{c}{} & 
\multicolumn{1}{c}{} & 
\multicolumn{1}{c}{} & 
\multicolumn{1}{c}{(km~s$^{-1}$)}  \\
\hline\noalign{\smallskip}
IRAM 2A$^*$     & 21:40:41.86  &  58:16:11.9  &  0.4$''$ $\times$ 0.2$''$ & {\bf 100} & {\bf 0.06} &
{\bf 3.1~$\times$ 10$^{24}$} &  {\bf $<$1.4~$\times$ 10$^{-10}$}  &  {\bf $\sim$5.0~$\times$ 10$^{-10}$} & $>$4 & $\sim$2  \\ 
BIMA3$^*$       & 21:40:42.84  &  58:16:01.4  & 0.8$''$ $\times$ 0.4$''$ & {\bf 100}  & {\bf 0.05} &
{\bf 6.5~$\times$ 10$^{23}$} &  {\bf $<$1.6~$\times$ 10$^{-10}$}  &  {\bf $<$2.3~$\times$ 10$^{-9}$} &  &  $\sim$2 \\
            &               &             &      & 50  & 0.11 &      1.4~$\times$ 10$^{24}$    &  $<$4.1~$\times$ 10$^{-11}$       & $<$1.2~$\times$ 10$^{-9}$ & & \\ 
            &               &             &      & 20  & 0.32 &      4.1~$\times$ 10$^{24}$    &  $<$6.2~$\times$ 10$^{-12}$       & $<$6.1~$\times$ 10$^{-10}$ & &     \\ 
N1$^a$       &  21:40:41.76 &  58:16:15.57 & 1.4$''$ $\times$ 1.2$''$ &  100  &  $<$0.03  &  $<$6.8~$\times$ 10$^{22}$   & $>$1.8~$\times$ 10$^{-9}$  &   & $<$2 & 2.4 \\
         &              &                  &                      &  50   &  $<$0.06  &  $<$1.4~$\times$ 10$^{23}$   & $>$4.7~$\times$ 10$^{-10}$ &   &  $<$5 &    \\
         &              &                  &                      &  {\bf 20} &  {\bf $<$0.15} &  
{\bf $<$3.7~$\times$ 10$^{23}$}   & {\bf $>$8.0~$\times$ 10$^{-11}$}  &   &  $<$16 &    \\  
N2$^a$      &  21:40:41.03 &  58:16:18.66 &  1.4$''$ $\times$ 1.2$''$ &  100  & $<$0.03  & $<$6.8~$\times$ 10$^{22}$   & $>$1.1~$\times$ 10$^{-9}$  &   &  $<$5  &   2.1 \\
         &              &                 &                       &  50   & $<$0.06  & $<$1.4~$\times$ 10$^{23}$   & $>$3.0~$\times$ 10$^{-10}$ &   &  $<$8 &    \\
         &              &                 &                       &  {\bf 20}  &  {\bf $<$0.15} & {\bf $<$3.7~$\times$ 10$^{23}$}   &  {\bf $>$5.1~$\times$ 10$^{-11}$}  &  &   $<$40 &    \\  
N3$^a$      &  21:40:41.83 &  58:16:08.22 &  1.4$''$ $\times$ 1.2$''$ &  100  & $<$0.03  & $<$6.8~$\times$ 10$^{22}$   & $>$1.6~$\times$ 10$^{-9}$  &   & $<$2    &  1.9 \\
         &              &              &                          &  50   & $<$0.06  & $<$1.4~$\times$ 10$^{23}$   & $>$4.2~$\times$ 10$^{-10}$ &   &  $<$5 &    \\
         &              &              &                        &  {\bf 20}  & {\bf $<$0.15} & {\bf $<$3.7~$\times$ 10$^{23}$}   &  {\bf $>$7.2~$\times$ 10$^{-11}$}  &   &   $<$17 &   \\  
N4$^a$      &  21:40:41.22 &  58:16:07.26 & 1.4$''$ $\times$ 1.2$''$ &  100  & $<$0.03  & $<$6.8~$\times$ 10$^{22}$   & $>$1.2~$\times$ 10$^{-9}$  &   &  $<$3  & 2.4 \\
         &              &              &                         &  50   & $<$0.06  & $<$1.4~$\times$ 10$^{23}$  & $>$3.1~$\times$ 10$^{-10}$  &   &   $<$7  & \\
         &              &              &                         &  {\bf 20}  &  {\bf $<$0.15} & {\bf $<$3.7~$\times$ 10$^{23}$}   &  {\bf $>$5.3~$\times$ 10$^{-11}$}  &   &  $<$36 &   \\  
N5$^a$      &  21:40:41.81 &  58:15:56.82 & 1.4$''$ $\times$ 1.2$''$ &  100  &  $<$0.03  & $<$6.8~$\times$ 10$^{22}$   & $>$1.3~$\times$ 10$^{-9}$  &    &   $<$3 & 2.1  \\
         &              &              &                         &  50   &  $<$0.06  &  $<$1.4~$\times$ 10$^{23}$   & $>$3.4~$\times$ 10$^{-10}$ &    &   $<$7  &   \\
         &              &              &                        &  {\bf 20}  &   {\bf $<$0.15} & {\bf $<$3.7~$\times$ 10$^{23}$}   &  {\bf $>$5.8~$\times$ 10$^{-11}$}  &   &   $<$20 &  \\
\hline
\end{tabular}}
\medskip
$^*$ Sizes, masses and $N$(H$_2$) from Neri et~al. (\cite{Neri07});
$^a$~the size is assumed to be equal to the beam size. The values of $N$(H$_2$) and the masses have been estimated from the 3~$\times$ rms (1~mJy/beam) of our 3.1~mm map and by adopting $\kappa$$_{1~{\rm mm}}$~= 0.01~cm$^2$~g$^{-1}$ and a dust emissivity spectral index of~1.
\vspace*{3mm}
\end{table}