\begin{table}%t1
%\centering
\par
\caption{\label{tbl-1a} Relevant parameters of the HD~159176 binary system adopted throughout this paper unless otherwise stated. The numbers are taken from Pachoulakis (\cite{Pach}, P96) and Diplas \& Savage (\cite{DS},~DS).}
\begin{tabular}{l c c c}
\hline\hline
Parameter & Prim. & Sec. & Ref. \\
\hline
$a~\sin{i}$~$(R_{\odot}$) & \multicolumn{2}{c}{28.9} & P96 \\
$M$~ ($M_{\odot}$) & 31.9 & 31.6 & P96 \\
$i~(^{\circ})$ & \multicolumn{2}{c}{$\sim$$ 50$} & P96 \\
$T_{\rm eff}$~(K) & 42~500 & 35~000 & P96 \\
$R_*$~ ($R_{\odot}$) & 9.8 & 9.3 & P96 \\
$v_{\infty}$~ (km~s$^{-1}$) & \multicolumn{2}{c}{2850} & P96 \\
${\dot{\it {M}}}$~ ($M_{\odot}$~yr$^{-1}$) & $3.2\times10^{-6}$ & $2.6\times10^{-6}$ & P96 \\
$\log{\it {N_{\rm H, ISM}}}$~(cm$^{-2}$) & \multicolumn{2}{c}{21.23} & DS\\
\hline
\end{tabular}
\end{table}