\begin{table}%t1
%\centering
\par
\caption{\label{tab:tauboo}Parameters of the star $\tau$~Boo and its planetary companion.}  
      \begin{tabular}{l r l l }  
      \hline\hline\noalign{\smallskip}
      Parameter & Value & Error &Ref. \\
      \hline 
      Star: \\
      Spectral type & F7 IV-V  & & B97 \\ 
      $V~({\rm mag})$        & 6.35 & & VF05\\
      $d~ (\rm{pc})$ & 15.60 & 0.17 & VF05\\
      $M_{\star}~({M_{\odot}})$ & 1.33 & 0.11 & VF05 \\
      $R_{\star}~({R_{\odot}})$ & 1.31 & 0.06 & G98 \\
      $P_{\rm{rot}}~({\rm d})$ & 3.31 &  & B97 \\
      $v \sin i~(\rm{km~s^{-1}})$ & 14.9 & 0.5 & H00 \\
      Age (Gyr) & $1.3$  & 0.4 & VF05 \\
      \hline
      Planet:\\
      $M_{\rm{p}} \sin i~({M_{\rm{Jup}}})$  & 4.13 & 0.34 & B06 \\
      $a~ (\rm{AU})$ & 0.0481 & 0.0028 & B06 \\
      $e$ & 0.023 & 0.015 & B06 \\
      $K_{\star}~(\rm{km~s^{-1}})$ & 0.4611 & 0.0076 & B06 \\
      Orbital period (d) & 3.31245 & 0.00003  & L03 \\
      ${ T_{\phi=0}}$ (JD) & 2~451~653.968 & 0.015  & L03 \\
            \hline
    \end{tabular}
\tablefoot{Abbreviations for the references are: B06 = Butler et~al. (\cite{butler06}) and references therein,  B97~=~Baliunas et~al. (\cite{baliunas97}), G98~=~Gonzalez (\cite{gonz98}),  H00~=~Henry et~al. (\cite{hen00}),  L89~=~Latham et~al. (\cite{latham89}),   L03~=~Leigh et~al. (\cite{leigh03a}),  VF05~=~Valenty \& Fischer (\cite{VF05}).}
  \end{table}