\begin{table}%t2
\caption{\label{table_measure}Quantities measured from the spectra: radial velocity, Tc~content,
effective temperature, and Li~abundance of the sample stars.}
\small%\centering
\par
\begin{tabular}{lrccr}
\hline\hline\noalign{\smallskip}
Name             & $rv$ [km~s$^{-1}$] & Tc? & $T_{\rm{eff}}$ & $\log\epsilon(\rm{Li})$ \\
\hline
\object{U Cet}   & $-19.0$  & no  & 3300 & $\la$$0.0$ \\
\object{W Cet}   & $ +5.8$  & yes & 3100 & +0.8          \\
\object{V441~Cyg}& $-61.7$  & yes & 3400 & +4.6          \\
\object{W Eri}   & $+17.8$  & no  & 2950 & +0.4          \\
\object{S Gru}   & $-18.4$  & yes & 2900 & +0.8          \\
\object{R Hor}   & $+56.0$  & yes & 2900 & +0.6          \\
\object{T Hor}   & $+44.9$  & no  & 3300 & $\la$$0.0$ \\
\object{TW Hor}  & $+14.5$  & yes & 3000 & $-$1.5        \\
\object{R Hya}   & $-15.7$  & no  & 3100 & $\la$$0.0$ \\
\object{RU Hya}  & $ +0.4$  & no  & 3300 & $\la$$0.0$ \\
\object{Y Lib}   & $ +9.3$  & no  & 3100 & +0.9          \\
\object{U Mic}   & $-61.0$  & no  & 2900 & +0.6          \\
\object{Y Scl}   & $+30.0$  & no  & 3200 & +1.0          \\
\object{T Tuc}   & $-37.9$  & no  & 3300 & $\la$$0.0$ \\
\object{ER Vir}  & $ +8.5$  & no  & 3500 & $\la$$0.0$ \\
\object{EV Vir}  & $-44.5$  & no  & 3500 & $\la$$0.0$ \\
\object{RS Vir}  & $-15.9$  & no  & 2900 & +1.0          \\
\object{S Vir}   & $ +7.2$  & yes & 2800 & +0.5          \\
\hline
\end{tabular}
\end{table}