\begin{table}%t1
\caption{Carbon stars with detached molecular shells.}\label{radio}
%\centerline
{
\begin{tabular}{lccc}
\hline
\hline
\multicolumn{1}{l}{{Source}} &
\multicolumn{1}{c}{{RA}(2000.0)} & 
\multicolumn{1}{c}{{Dec}(2000.0)} &
\multicolumn{1}{c}{{Ref.}} 
  \\
&
\multicolumn{1}{c}{[${\rm h{:}m{:}s}$]} & 
\multicolumn{1}{c}{[${\degr{:}\arcmin{:}\arcsec}$]} & 
\\
\hline
R Scl         & \mbox{01:26:58.09}  & --\mbox{32:32:35.5} & 1\\
U Cam      & \mbox{03:41:48.17} &  \phantom{--}\mbox{62:38:54.5} & 2\\
U Ant         & \mbox{10:35:12.85} &  --\mbox{39:33:45.3}  & 3 \\
V644 Sco  &\mbox{17:26:18.7}   &  --\mbox{40:01:52} &  4\\
DR Ser      & \mbox{18:47:21.02} &  \phantom{--}\mbox{05:27:18.6}  & 3 \\
S Sct         & \mbox{18:50:20.04} &  --\mbox{07:54:27.4} &  3\\
TT Cyg     & \mbox{19:40:57.00} &  \phantom{--}\mbox{32:37:05.9} & 5\\
\hline
\end{tabular}}
\medskip
Refs. --  1) \citet{Wong04}; 2) \citet{Lindqvist99}; 3) Hipparcos catalogue; 4) \citet{Kholopov85}; 5) \citet{Olofsson00}. 
\end{table}