\begin{table}%t11
\caption{Comparison of stellar parameters and abundances derived for $\tau$~Sco in previous studies found in the literature and in this work.}\label{t_comp_tau}
%\centering
\par
\begin{tabular}{c c c c c}    
\hline
\hline
 Work & \Teff\ (K) & \grav\ & $\epsilon$(O) & $\xi_{\rm t}$ (\kms)\\
\hline
Hardorp \& Scholz & 30~900 & 4.05 & 8.70 & -- \\
Kane et~al.  & 30~300 & 3.95 & 8.6 & -- \\
Peters \& Polidan & 31~500 & 4.3 & 8.65 $\pm$ 0.26 & 5 \\
Sch\"onberner et~al. & 33~000 & 4.15 & 8.5 & 5 \\
Becker \& Butler & 33~000 & 4.15 & 8.70 $\pm$ 0.19 & 5 \\
                 &       &      & 8.58 $\pm$ 0.19 & 10 \\
Kilian et~al. & 31~400 & 4.24 & 8.61 $\pm$ 0.12 & 3 \\
Martin & 30~000 & 3.75 & 8.58 $\pm$ 0.17 & 7 \\
This work & 32~000 & 4.0 & 8.70 $\pm$ 0.10 & 8 \\
\hline
\end{tabular}
\end{table}