\begin{table}%t6
\caption{The five spectroscopic binaries (SBs) and their orbital
elements. Columns for the first part of the table (literature data):
(1) HD number; 
(2) periastron date $T_0$ (HJD); 
(3) period $P$ (days); 
(4) primary orbital semi-amplitude $K_1$ (km~s$^{-1}$); 
(5) secondary orbital semi-amplitude $K_2$ (km~s$^{-1}$; only for
    double-lined spectroscopic binaries, i.e., SB2s); 
(6) systemic velocity $\gamma$ (km~s$^{-1}$); 
(7) orbital eccentricity $\epsilon$ (see the footnote to the table for
    literature sources). 
Columns for the second part of the table (data from this study): 
(1) HD number; 
(2) exposure number (Table~\ref{tab:3}); 
(3) instantaneous radial velocity (km~s$^{-1}$); 
(4) primary component prediction using the ephemeris provided above
    (km~s$^{-1}$);
(5) secondary component prediction using the ephemeris provided above
    (km~s$^{-1}$; only for SB2s).}
 %\centering
\par
\begin{tabular}{cccclcl} 
\hline\hline 
\multicolumn{1}{c}{HD} & 
\multicolumn{1}{c}{$T_0$~[HJD]} & 
\multicolumn{1}{c}{$P$~[days]} & 
\multicolumn{1}{c}{$K_1$~[km~s$^{-1}$]} & 
\multicolumn{1}{c}{$K_2$~[km~s$^{-1}$]} & 
\multicolumn{1}{c}{$\gamma$~[km~s$^{-1}$]} & 
\multicolumn{1}{c}{$\epsilon$}\\ 
\multicolumn{1}{c}{(1)} & 
\multicolumn{1}{c}{(2)} & 
\multicolumn{1}{c}{(3)} & 
\multicolumn{1}{c}{(4)} & 
\multicolumn{1}{c}{(5)} & 
\multicolumn{1}{c}{(6)} & 
\multicolumn{1}{c}{(7)} \\ 
\hline 
23180 & $2445338.267\phantom{0} \pm 0.005$ & $ \phantom{0}4.4191447 \pm 0.0000082$ & $111.8 \pm 1.4$ & $155.0 \pm 2.4$ & $+12.2 \pm 0.5$ & $0              $\\ 
23625 & $2400000.0\phantom{000}   \pm 0.005$ & $ \phantom{0}1.940564\phantom{0}  \pm 0.000004\phantom{0} $ & $ \phantom{0}82.0 \pm 2.0$ & $114.0 \pm 3.0$ & $+20.0 \pm 1.0$ & $0              $\\ 
24190 & $2435401.00\phantom{00}  \pm 0.01\phantom{0} $ & $26.111\phantom{0000}     \pm 0.001\phantom{0000}    $ & $ \phantom{0}13.0 \pm 1.0$ & --              & $+26.7 \pm 1.0$ & $0.08\phantom{0}  \pm 0.01\phantom{0} $\\ 
25799 & $2435152.835\phantom{0} \pm 0.013$ & $ \phantom{0}0.9121679 \pm 0.0000019$ & $ \phantom{0}17.6 \pm 1.2$ & --              & $+24.3 \pm 0.8$ & $0              $\\ 
25833 & $2424946.5150 \phantom{ \pm 0.0000}        $ & $ \phantom{0}2.0287298 \phantom{ \pm 0.0000000~~}             $ & $162.8 \pm 1.1$ & $178.7 \pm 1.2$ & $+24.7 \pm 0.9$ & $0.071 \pm 0.001$\\
\hline
\end{tabular}
\begin{flushleft}
HD~23180: Stickland \& Lloyd (\cite{Sti98}); \\ 
HD~23625: Blaauw \& van Hoof (\cite{Blah63}); \\ 
HD~24190: Lucy \& Sweeney (\cite{Luc71}); \\ 
HD~25799: Morris et~al. (\cite{Mor88}); this is a non-radial pulsator;  \\ 
HD~25833: Gim\'enez \& Clausen (\cite{Gim94}) (cf. Popper \cite{Pop74}).
\end{flushleft}
\medskip
\begin{tabular}{ccrrr}
\hline\hline 
\multicolumn{1}{c}{HD} & 
\multicolumn{1}{c}{Exposure} & 
\multicolumn{1}{c}{$v_{\rm rad}$~[km~s$^{-1}$]} & 
\multicolumn{1}{c}{$v_{\rm rad,1}$~[km~s$^{-1}$]} & 
\multicolumn{1}{c}{$v_{\rm rad,2}$~[km~s$^{-1}$]} \\ 
\multicolumn{1}{c}{(1)} & 
\multicolumn{1}{c}{(2)} & 
\multicolumn{1}{c}{(3)} & 
\multicolumn{1}{c}{(4)} & 
\multicolumn{1}{c}{(5)} \\ 
\hline 
23180 & 1*           & $-6.1 \pm 3.3$ & $  \phantom{\sim 0}-28.0 \pm  \phantom{0}1.8$ & $  67.9 \pm  \phantom{0}2.5$\\ 
      & 2\phantom{*} & $ 6.4 \pm 3.1$ & $  \phantom{\sim 0}-21.6 \pm  \phantom{0}1.8$ & $  59.0 \pm  \phantom{0}2.5$\\ 
      & 3\phantom{*} & $80.2 \pm 4.2$ & $  \phantom{\sim}108.7 \pm  \phantom{0}1.6$   & $-121.6 \pm  \phantom{0}2.5$\\ 
23625 & 1\phantom{*} & $ 1.7 \pm 3.0$ & $  \phantom{\sim 0}-34.7 \pm 19.1$ & $  96.1 \pm 26.5$\\ 
24190 & 1\phantom{*} & $21.3 \pm 4.6$ & $  \phantom{\sim 0}20.6 \pm  \phantom{0}1.9$ & --                 \\ 
      & 2*           & $22.2 \pm 4.6$ & $  \phantom{\sim 0}20.5 \pm  \phantom{0}1.9$ & --                 \\ 
25799 & 1\phantom{*} & $38.3 \pm 4.0$ & $  \phantom{\sim 0}40.3 \pm  \phantom{0}2.1$ & --                 \\ 
      & 2\phantom{*} & $38.4 \pm 3.9$ & $  \phantom{\sim 0}41.2 \pm  \phantom{0}1.7$ & --                 \\ 
25833 & 1*           & $31.6 \pm 1.2$ & $\sim$$190 \phantom{ \pm 00.00~~~~~}$ & $\sim$$-150 \phantom{ \pm 00.00~~~~~}$\\ 
\hline
\end{tabular} 
\label{tab:6} 
\end{table}