\begin{table}%t3
  \caption{\label{tabSpectraDistances}Properties of the different central stars.}
  %\centerline
{
  \begin{tabular}{l l l l l l}
    \hline\hline
    \noalign{\smallskip}
    Name & Type & $T_{\rm eff}$ (K) & $d$ (pc) & $a$  (AU)\\
    \hline
    \noalign{\smallskip}
    $\sigma \ {\rm Bootis}$\tablefootmark{a,b} & F2V & 6722 & 15.5 & 1.89\\
    Sun\tablefootmark{c} & G2V & 5777 & 0 & 1.0\\
    $\epsilon \ {\rm Eridani}$\tablefootmark{a,d} & K2V & 5072 & 3.2 & 0.61 & \\
    AD Leo\tablefootmark{e,f} & M4.5V & 3400 & 4.9 & 0.15\\
    \hline
    \noalign{\smallskip}
  \end{tabular}}
\par
   \tablefoot{\tablefoottext{a}{\citet{Habing2001};} \tablefoottext{b}{\citet{Cenarro2007};} \tablefoottext{c}{\citet{CoxAstroQuant};}
    \tablefoottext{d}{\citet{Santos2004};} \tablefoottext{e} {\citet{Leggett1996};}  \tablefoottext{f}{\citet{Segura05}.}}
\end{table}