\begin{table}%t4
\caption{\label{tab: index}Spectral index for single component.}
\par
\small%%\centerline

 {
\begin{tabular}{cccccc}
\hline\hline
$\nu_1$-$\nu_2$ & {\it HPBW}& Component&$S_{\nu_1}$&$S_{\nu_2}$& $\alpha$\\
GHz &mas$\times$mas, $^{\circ}$ &&mJy&mJy&\\
\hline
1.6--5&10.0 $\times$ 5.0, 0&A&15.4&7.5& 0.63 $\pm$ 0.01\\
&&B&29.0&3.6&1.82 $\pm$ 0.01\\
&&N1&15.4&6.1&0.82 $\pm$ 0.02\\
&&S1&9.4&7.3&0.66 $\pm$ 0.03\\
5--8.4&3.0 $\times$ 3.0, 0&A&6.7&6.7&0.00 $\pm$ 0.05\\
&&C&4.1&4.1&0.00 $\pm$ 0.05\\
&&B&6.2&3.7&1.03 $\pm$ 0.06\\
&&S1&7.7&2.6&2.12 $\pm$ 0.06\\
8.4--22&1.86 $\times$ 0.86, --4&C&5.3&4.6&0.14 $\pm$ 0.04\\
&&A1&2.9&2.2&0.29 $\pm$ 0.08\\
&&A2&8.1&6.8&0.18 $\pm$ 0.03\\
\hline
\end{tabular}}
\medskip
$S_{\nu_1}$ and $S_{\nu_2}$ are referred to the flux density at lower~${\nu_1}$ and higher~${\nu_2}$ frequency  between the two considered for the spectral analysis. All flux density values are  derived from 2008~February~26 observations. 
\end{table}