\begin{table}%T1
%\centering
\small
  \caption{Properties of the subgroups \object{Upper Scorpius} (\object{US}), \object{Upper Centaurus Lupus} (\object{UCL}), and \object{Lower Centaurus Crux} (\object{LCC}) of \sco{}, and of our model for \sco{}. Columns 2--4 list for each subgroup its distance, effective radius, and age. Column~5 lists the median interstellar extinction towards each subgroup. Column~6 lists the number of confirmed \hipp{} members of each subgroup, and is followed by the {\em observed} number of singles, binaries, triples, and higher-order systems among the confirmed members in Cols.~7--10, taken from \cite{kouwenhoven2007a}. Finally, Cols.~11--13 list the observed multiplicity fraction, non-single star fraction, and companion star fraction among the confirmed members \citep[see][ for a definition of these fractions]{kouwenhoven2005}. Note that the latter quantities are lower limits due to the presence of unresolved binary and multiple systems. In the bottom row we list the properties of our \sco{} model. The number of systems $N=S+B$ (i.e., singles and binaries) used in our model includes substellar objects with masses down to $0.02 \msun$. References: (1) \cite{dezeeuw1999}; (2) \cite{degeus1989}; (3) \cite{preibisch2002}; (4) \cite{mamajek2002}; (5) \cite{debruijne1999}. 
 \label{table:subgroups}}
  \begin{tabular}{lc cc cc cccc ccc}
    \hline \hline
    Subgroup & $D$ & $R$ & Age & $A_V$ & $N_\star$ & $S_\star$ & $B_\star$ & $T_\star$ & ${>}3$ & $F_{M,\star}$ & $F_{\rm NS,\star}$ & $F_{\rm C,\star}$ \\
          & pc  & pc  & Myr & mag \\
    \hline
    \object{US}  &  145$^1$ & ${\sim} 20^5$  & 5$-$6$^{2,3}$ & 0.47$^5$  & 120$^1$ & 64  & 44 & 8  & 3 & 0.46 & 0.67 & 0.61 \\
    \object{UCL} &  140$^1$ & ${\sim} 35^5$  & 15$-$22$^4$   & 0.06$^5$  & 221$^1$ & 132 & 65 & 19 & 4 & 0.40 & 0.61 & 0.52\\
    \object{LCC} &  118$^1$ & ${\sim} 35^5$  & 17$-$23$^4$   & 0.05$^5$  & 180$^1$ & 112 & 57 & 9  & 1 & 0.37 & 0.56 & 0.44 \\
    \hline 
    Model& 130     & 20           & 5  & 0.00 & 9000 & varying & varying & 0  & 0 & varying & varying & varying \\
    \hline 
   \end{tabular}
\end{table}