\begin{table}%t1
%%\centering

\par
\caption{\label{t:samples}Samples analyzed in this paper, selection criteria for solar analogs, and number of stars selected.}
\begin{tabular}{lcc}\hline\hline
Sample & Solar analogs range & Number \\ 
       & $\Delta\teff/\Delta\logg/\Delta\feh$ & of stars \\ \hline
\cite{reddy03}             & $\pm300$~K/$\pm0.2$/$\pm0.2$ & 11 \\
\cite{allende04:s4n}       & $\pm150$~K/$\pm0.2$/$\pm0.2$ & 12 \\
\cite{takeda07:abundances} & $\pm150$~K/$\pm0.2$/$\pm0.2$ & 14 \\
\cite{neves09}             & $\pm100$~K/$\pm0.1$/$\pm0.1$ & 19 \\
\cite{gonzalez10}          & $\pm100$~K/$\pm0.1$/$\pm0.1$ & 11 \\
Bensby et~al. (in prep.) & $\pm100$~K/$\pm0.1$/$\pm0.1$ & 20 \\ \hline
\end{tabular}
\end{table}