\begin{table}
%\centering
\par
\caption{The orbital period is given. Note that we included further refinements of our own based on longer time series. The original reference is
given.\label{tab:Porbit}}
$$
\begin{tabular}{llr@{~$\pm$~}lll}
\hline
\hline
No	&Name			&\multicolumn{2}{c}{$P_{{\rm orbit}}$}	&$a \sin i$		&Reference\\
	&			&\multicolumn{2}{c}{(days)}			&AU			&\\
\hline
8	&HD~44179		&$319$					&$2$	&$0.34$			&\citet{95VanWinckel}\\
\par
9	&HD~46703		&$600$					&$2$	&$0.92$			&\citet{93Waelkens}\\
\par
10	&ST~Pup		&$410.4$				&$2.9$	&$0.65$			&\citet{96Gonzalez}\\
\par
11	&HD~52961		&$1310$					&$8$	&$1.60$			&\citet{99VanWinckel}\\
\par
12	&SAO~173329		&$115.9$				&$1$	&$0.14$			&\citet{00VanWinckel}\\
\par
13	&U~Mon			&\multicolumn{2}{c}{$\pm$2597}		&$3.6$			&\citet{95Pollard}\\
\par
15	&IRAS~08544		&$503$					&$2$	&$0.38$			&\citet{03Maas}\\
\par
21	&HR~4049		&$430.7$				&$1$	&$0.60$			&\citet{91bWaelkens}\\
\par
24	&HD~95767		&\multicolumn{2}{c}{$\pm$2050}		&			&\citet{00VanWinckel}\\
\par
28	&SX~Cen		&$595$					&$7$	&$1.12$			&\citet{02Maas}\\
\par
31	&EN~TrA		&$1534$					&$21$	&$2.07$			&\citet{99VanWinckel}\\
\par
38	&89~Her		&$288.4$				&$4$	&$0.08$			&\citet{84Arellano}\\
\par
42	&AC~Her		&$1194$					&$6$	&$1.39$			&\citet{98VanWinckel}\\
\par
50	&HD~213985		&$259$					&$1$	&$0.78$			&\citet{00VanWinckel}\\
\par
51	&BD$+$39$^{\circ}$4926	&$775$					&$5$	&$0.10$			&\citet{70Kodaira}\\\hline
\end{tabular}
$$
\end{table}