\begin{table}%t2
\caption{Stellar parameters for some test stars.}\label{tab:parameters}
\small%\centerline
{
\begin{tabular}{lcccrccc}
\hline
\hline
%&&&&&&& \\[-8pt]
HD number    & $T_{{\rm eff}}$ [K] & $\log{g}_{\rm spec}$ [cm~s$^{-2}$] & $\xi_{{\rm t}}$ [km~s$^{-1}$]& \multicolumn{1}{c}{[Fe/H]} & $N$(\ion{Fe}{i}, \ion{Fe}{ii}) & $\sigma$(\ion{Fe}{i}, \ion{Fe}{ii}) & Ref.$\dagger$  \\
%&&&&&&& \\[-8pt]
\hline
FEROS spectra:& & & & & & \\
\hline
\object{HD~20201}   &6064\ $\pm$\ 34 &  4.43\ $\pm$\  0.02& 1.17\ $\pm$\  0.05 &0.19\ $\pm$\  0.05&38,15& 0.04, 0.06 & [1]\\
		 &6084\ $\pm$\ 18 &  4.57\ $\pm$\  0.03& 1.16\ $\pm$\  0.02 &0.16\ $\pm$\  0.01&350,57& 0.05, 0.09 & [2]\\	
\object{HD~33214}   &5180\ $\pm$\ 74 &  4.40\ $\pm$\  0.11& 1.10\ $\pm$\  0.10 &0.17\ $\pm$\  0.08&39,14& 0.08, 0.13 & [1]\\
	 &5265\ $\pm$\ 31 &  4.48\ $\pm$\  0.08& 1.10\ $\pm$\  0.06 &0.19\ $\pm$\  0.02&348,51& 0.09, 0.24 & [2]\\	
\object{HD~36553}   &6103\ $\pm$\ 46 &  3.85\ $\pm$\  0.03& 1.61\ $\pm$\  0.07 &0.41\ $\pm$\  0.06&37,15& 0.05, 0.09 & [1]\\
	 &6153\ $\pm$\ 23 &  4.06\ $\pm$\  0.04& 1.67\ $\pm$\  0.02 &0.39\ $\pm$\  0.02&349,55& 0.07, 0.12 & [2]\\	
\object{HD~7570}    &6198\ $\pm$\ 39 &  3.49\ $\pm$\  0.02& 1.40\ $\pm$\  0.07 &0.24\ $\pm$\  0.05&38,15& 0.04, 0.06 & [1]\\
	 &6204\ $\pm$\ 16 &  4.55\ $\pm$\  0.03& 1.31\ $\pm$\  0.02 &0.21\ $\pm$\  0.01&350,59& 0.05, 0.10 & [2]\\	
\object{HD~7727}    &6131\ $\pm$\ 41 &  3.34\ $\pm$\  0.02& 1.18\ $\pm$\  0.07 &0.16\ $\pm$\  0.05&38,15& 0.05, 0.07 & [1]\\
		 &6169\ $\pm$\ 18 &  4.55\ $\pm$\  0.03& 1.26\ $\pm$\  0.02 &0.12\ $\pm$\  0.01&327,57& 0.05, 0.10 & [2]\\	
\hline
HARPS spectra:& & & & & & \\
\hline
\object{HD~102117}  &5672\ $\pm$\ 22 &  4.27\ $\pm$\  0.03& 1.05\ $\pm$\  0.02 &0.30\ $\pm$\  0.02&37, 8& 0.03, 0.03 & [3]\\
		 &5671\ $\pm$\ 18 &  4.24\ $\pm$\  0.03& 1.06\ $\pm$\  0.02 &0.28\ $\pm$\  0.01&286,56& 0.05, 0.10 & [2]\\	
\object{HD~212301}  &6256\ $\pm$\ 28 &  4.52\ $\pm$\  0.02& 1.43\ $\pm$\  0.06 &0.18\ $\pm$\  0.02&36, 9& 0.03, 0.01 & [1]\\
		 &6273\ $\pm$\ 21 &  4.64\ $\pm$\  0.04& 1.32\ $\pm$\  0.02 &0.16\ $\pm$\  0.02&278,53& 0.05, 0.13 & [2]\\	
\object{HD~4308}    &5685\ $\pm$\ 12 &  4.49\ $\pm$\  0.02& 1.08\ $\pm$\  0.03 &-0.31\ $\pm$\  0.01&35, 8& 0.01, 0.02 & [1]\\
		 &5675\ $\pm$\ 13 &  4.43\ $\pm$\  0.02& 0.91\ $\pm$\  0.02 &-0.33\ $\pm$\  0.02&293,56& 0.04, 0.08 & [2]\\	
\object{HD~69830}   &5385\ $\pm$\ 19 &  4.37\ $\pm$\  0.03& 0.80\ $\pm$\  0.03 &-0.05\ $\pm$\  0.01&35, 8& 0.03, 0.02 & [1]\\
		 &5410\ $\pm$\ 17 &  4.35\ $\pm$\  0.04& 0.83\ $\pm$\  0.02 &-0.07\ $\pm$\  0.01&284,55& 0.05, 0.15 & [2]\\	
\hline
\end{tabular}}
\medskip
$\dagger$ The instruments used to obtain the spectra were: [1] \citet[][]{Sousa-2006}; [2] this paper; [3] \citet[][]{Santos-2005}.
\end{table}