\begin{table}%t3 \par \caption{\label{ldmodels}Results of the fits to the data for different models.} %\centerline {\small \begin{tabular}{lcccrcrc} \hline \hline \noalign{\smallskip} Model & $\theta_{\rm LD}$ & $\alpha$ & \multicolumn{2}{c}{First lobe} & \multicolumn{2}{c}{All} \\ & (mas) & & $\chi^2$ & $P$ & $\chi^2$ & $P$ \\ \noalign{\smallskip} \hline \noalign{\smallskip} Uniform disk & $2.855 \pm 0.007$ & 0.000 &1.89 &1& 17.1&0 \\ ATLAS9 & $2.936 \pm 0.007$ & 0.176 &1.59 &1& 2.2&0 \\ MARCS-pp & $2.940 \pm 0.007$ & 0.183 &1.58 &1& 2.1&0 \\ PHOENIX & $2.944 \pm 0.007$ & 0.196 &1.57 &1& 1.9&0 \\ MARCS-sph & $2.945 \pm 0.007$ & 0.193 &1.56 &1& 1.9&0 \\ adjusted LD & $2.958 \pm 0.027$ & $0.23\pm0.05$ &1.52 &0& 2.1&2 \\ \hline \end{tabular}} \tablefoot{$\theta_{\rm LD}$: CLD corrected diameter; $\alpha$: equivalent power law parameter; $\chi^2$ and $P$: reduced $\chi^2$ and number of parameters fitted (if $P=0$, the $\chi^2$ is only computed). ``first lobe'' referes to data marked with a ``$\bullet$'' in Table~\ref{visib-table}.} \end{table}