\begin{table}%t1 \caption{\label{tab:parameters}Stellar parameters for the stars analyzed in the present paper.} %\centering \par \begin{tabular}{lccc} \hline\hline \noalign{\smallskip} Parameter & \object{HD~5388}& \object{HD~181720} & \object{HD~190984}\\ \hline Spectral~type & F6V & G1V & F8V\\ $m_v$ & 6.73 & 7.84 &8.76\\ $B-V$ & 0.500 & 0.599 & 0.579\\ Parallax [mas] & 18.77 $\pm$ 0.96 & 17.88 $\pm$ 1.31 & 9.8 $\pm$ 2.6\tablefootmark{\dagger} \\ Distance~[pc] & 53 $\pm$ 3 & 56 $\pm$ 4 & 103$^{+37}_ {-21}$\tablefootmark{\dagger}\\ $M_v$ & 3.10 & 4.10 & 3.71 \\ $L [L_{\odot}]$ & 4.60 & 1.94 & 2.69 \\ Radius [$R_{\odot}$] & 1.91 & 1.39 & 1.53\\ $\log{R'_{\rm HK}}$ & $-$4.98 & $-$5.01 & $-$5.01\\ $v~\sin{i}$~[km~s$^{-1}$] & 4.2 & 1.5 &3.4\\ $T_{\rm eff}$~[K] & 6297 $\pm$ 32 & 5781 $\pm$ 18 &5988 $\pm$ 25\\ $\log{g}$ & 4.28 $\pm$ 0.06 & 4.24 $\pm$ 0.15 &4.02 $\pm$ 0.22\\ $\xi_{{\rm t}}$ & 1.57 $\pm$ 0.04 & 1.17 $\pm$ 0.04 &1.48 $\pm$ 0.03\\ ${\rm [Fe/H]}$ & $-$0.27 $\pm$ 0.02 & $-$0.53 $\pm$ 0.02 & $-$0.48 $\pm$ 0.06\\ Mass~$[M_{\odot}]$ & 1.21 & 0.92 & 0.91\\ \hline \end{tabular} \tablefoot {\tablefoottext{\dagger}{Derived in this paper (see text).}} \end{table}