\begin{table}%t2
\caption{\label{par}Stellar parameters for the model atmospheres of our program stars given as $T_{\rm eff}/\log g/{\rm [Fe/H]}/\xi_{\rm micro}$. }
\small%\centerline
 {  
  \begin{tabular}{l c c c c c}
  \hline\hline
  \noalign{\smallskip}
    Star &  \multicolumn{2}{c}{Stellar parameters$^a$ determined by}   &      \multicolumn{3}{c}{Stellar model parameters adopted in this paper}\\
    & \citet{lecureur} & Zoccali (2009), private comm.  &$T_{\rm eff}/\log g/$ [Fe/H] $/\xi_{\rm micro}$ &  [$\alpha$/Fe] & $\xi_{\rm macro}^b$ \\
    &  &   see also \citet{zoccali:08} &   & & {\it FWHM} in km~s$^{-1}$ \\
     \noalign{\smallskip}
  \hline
 {B3-b1} & $4300/1.7/{-}0.78/1.5$ & $4400/1.7/{-}0.60/1.3$ &  $4365/2.0/{-}0.73/1.5$ & +0.3 & 5.0 \\
 {B3-b7}   &  $4400/1.9/{+}0.20/1.3$  & $4350/1.6/{+}0.21/1.2$   & $4310/2.1/{+}0.06/1.6$  & +0.08  & 4.8\\
 {B3-b8}   &  $4400/1.8/{-}0.62/1.4$  & $4350/1.7/{-}0.65/1.4$   & $4250/1.5/{-}0.69/1.4$  & +0.3  & 4.8\\
 {BW-b6}   & $4200/1.7/{-}0.25/1.3$ &  $4450/1.9/{-}0.20/1.4$ &  $4340/2.2/{-}0.16/1.5$  & +0.15 & 4.3 \\
 {BW-f6}   & $4100/1.7/{-}0.21/1.5$ & $4400/1.8/{-}0.23/1.6$ &  $4150/1.5/{-}0.31/1.6$  & +0.2 & 5.0  \\
 {B6-f1} &   $4200/1.6/{-}0.01/1.5$ & $4250/1.9/{-}0.08/1.5$  & $4030/1.3/{-}0.08/1.5$  & +0.1 & 5.3 \\
 {B6-b8}    &  $4100/1.6/{+}0.03/1.3$ &  $4250/1.8/{-}0.06/1.4$  &  $3985/1.1/{-}0.14/1.3$ & $+$0.1  & 5.7 \\
 {B6-f7}  & $4300/1.7/{-}0.42/1.6$  & $4450/1.8/{-}0.27/1.5$ &  $4315/1.9/{-}0.34/1.6$  & $+0.2$ & 4.8\\
\hline
    &  \multicolumn{2}{c}{Stellar parameters$^a$ determined by}   &      \multicolumn{3}{c}{Stellar model parameters adopted in this paper}\\
    &  \multicolumn{2}{c}{\citet{fulbright:07} and used by \citet{ryde_bulb1}}  &$T_{\rm eff}/\log g/$ [Fe/H] $/\xi_{\rm micro}$ &  [$\alpha$/Fe] & $\xi_{\rm macro}^b$ \\
    &  & &   & & {\it FWHM} in km~s$^{-1}$ \\
\hline
 {Arp~4203} & \multicolumn{2}{c}{$3902/0.5/{-}1.25/1.9$} &  $3815/0.35/{-}1.25/1.8$ & +0.35  & 6.2 \\
 {Arp~4329} &\multicolumn{2}{c}{ $4197/1.3/{-}0.90/1.5$} &  $4153/1.15/{-}1.02/1.5$ & +0.35 & 5.8 \\
 {Arp~1322} & \multicolumn{2}{c}{$4106/0.9/{-}0.23/1.6$} &  $4250/1.5/{-}0.16/1.5$ & +0.15 & 6.2 \\
 {Arcturus} &  \multicolumn{2}{c}{$4290/1.5/{-}0.5/1.7$} & $4280/1.7/{-}0.53/1.7$  & +0.3 & 3.7\\  
\hline
\end{tabular}}
\medskip
$^{a}$~The stellar parameters are given as  the effective temperature, $T_{\rm eff}$, in~K, the logarithmic surface gravity, $\log g$, in cgs~units, and the microturbulence, $\xi_{\rm micro}$, in~km~s$^{-1}$. \\
$^{b}$~The macroturbulence is given as the {\it FWHM} used in the final convolution of the synthetic spectra fitted to include both effects of stellar macroturbulence and the instrumental profile.
\end{table}