\begin{table}%t4
%\centering
\par
\caption{\label{properties_delvel}Properties of $\delta$~Vel~Aa, Ab and B derived from their $V$ and $K$ band magnitudes using the surface brightness-color relations from Kervella et~al.~(\cite{kervella04}). The bolometric corrections for the $V$ band were taken from Bessell et~al.~(\cite{bessell98}). The approximate masses of the three stars are discussed in Sect.~\ref{discussion}.}
\begin{tabular}{lccccrcrcc}
\hline \hline
Star & $\theta_{\rm LD}$~(mas) & Radius~($R_\odot$) & $T_{\rm eff}$~(K) & $M_V$ & BC$_V$ & $M_{\rm bol}$ & $L/L_\odot$ & Spect. & $M/M_\odot$ \\
\hline
\noalign{\smallskip}
Aa & $1.21 \pm 0.03$ & $3.17 \pm 0.08$ & $9000 \pm 400$ & $0.39 \pm 0.04$ & $-0.07$ & $0.32 \pm 0.04$ & $59.2 \pm 2.0$ & A2IV & $2.5 \pm 0.1$\\
Ab & $0.77 \pm 0.02$ & $2.02 \pm 0.05$ & $8600 \pm 350$ & $1.50 \pm 0.04$ & 0.00 & $1.50 \pm 0.04$ & $20.0 \pm 0.7$ & A4V & $2.0 \pm 0.1$\\
B & $0.53 \pm 0.02$ & $1.39 \pm 0.06$ & $6350 \pm 350$ & $3.60 \pm 0.04$ & 0.00 & $3.60 \pm 0.04$ & $3.1 \pm 0.2$ & F8V & $1.3 \pm 0.1$\\
 \hline
\end{tabular}
\end{table}