\begin{table}%t2
%\centering
\par
\caption{\label{tab_obs}A selection of AGB stars with their mass-loss rates and the results.}
\begin{tabular}{l l l l l l} 
\hline\hline 
\noalign{\smallskip}
Source    &   {\it \.{M}}  &  Strength	&  Fo. abun.  & Fo. abun.\\
&  $(M_{\odot}~{\rm yr}^{-1})$	& 11.3~$\mu$m  & 11.3~$\mu$m & Kemper et~al. (2001) \\
& $^{(a)}$  & band  & band & \\
\hline 
IRAS 17010-3840	&  ?  & 0.14  &   $>$12\%  &  $-$ \\
OH104.91+2.41	& $5.6\times 10^{-5}$ (1)  & 0.03  &	$<$2\% &  $<$5\%\\
OH26.5+0.6	& $16 \times 10^{-5}$ (2)  & 0.06  &	$\sim$4\% & $<$5\%\\
OH127.8+0.0	& $20 \times 10^{-5}$ (3)  & 0.04  &	$\sim$2\%  &  $<$5\%\\
OH30.1-0.7	& $15 \times 10^{-5}$ (4)  & 0.10  &	$\sim$9\%  & $-$\\
OH32.8-0.3	& $16 \times 10^{-5}$ (5)  & 0.14  &	$>$12\%    & $<$5\%\\
\hline
\end{tabular}
\tablefoot{It lists the strength of the 11.3~$\mu$m band together with the indicated forsterite (fo.) abundance using the 11.3~$\mu$m band. The sources have been selected using the catalog of \citet{sloan03}. The forsterite abundance obtained by \citet{kemper01} has also been included.} \vspace*{-2mm}
\tablebib{1: \citet{riechers05}; 2: \citet{just96}; 3: \citet{just92}; 4: \citet{schut89}; 
5: \citet{groene94}.}
\end{table}