\begin{table}%t5
\par
%\begin{center}
\par
\caption{Estimated ages, masses and radii of the stars in our sample
and the companions.}
\label{ages}
\begin{tabular}{lcccc}
\hline
\hline\noalign{\smallskip}
\par
{ Star } & & { Age [Myr]} & { Mass [\Msun]} & Radius [\Rsun]\\\noalign{\smallskip}
\par
\hline
\par
     T Cha &-- &  $\geq$10 &        1.2 & 1.5  \\
\par
     Sz 68 &A &     1--3 &          2 & 2.9\\
\par
         &B &   $\leq$30 & 0.6--0.8  & 0.8   \\
\par
    RU Lup &--  &         1 &  0.6--0.8 &  2.4 \\
\par
    EX Lup &--   &     1--3 &  $\leq$0.6 & 1.6  \\
\par
    Sz 124 & -- &        10 &  0.6--0.8 & 1.0  \\
\par
           &SE &      --      &    --        &  --  \\
\par
     ROX 2 &A   &         1 &  0.6--0.8 &  2.2 (2.3)  \\
\par
           &B &        --   &    --        & --  \\
\par
   DoAr 24 &--   &     1--3 &    1.2  & 2.2 \\
\par
  DoAr 24E &A &     1--3 &  2 & 3.5 \\
\par
           &B &        --   &    --        & --   \\
\par
     SR 12 &A &   $\ll$1 &  0.2--0.4 & 2.7 (2.3) \\
\par
           &B &    --       &     --       &  3.8  \\
\par
    ROX 31 &A   &     3--5 &  0.6--0.8 & 1.4 (2.6) \\
\par
           &B &        --   &    --        & --   \\
\par
  Wa Oph/4 & A    &    5--10 &    1.2 & 1.6 (2.4) \\
\par
           & B  &   --       &    -- &    --    \\
\par
  Wa Oph/6 &--   &         3 &  0.6--0.8 &  1.7\ (3.4)  \\
\par
    IX Oph &--   & $\geq$10  &   1.2  & 1.6 \\
\par
 V1725 Oph & -- &     $\geq$1 &  $\leq$0.6 & 1.8 (1.3) \\
\par
           & \Ha2$^{a}$ &    1       &   0.2--0.4  & 1.8   \\
\par
CoKu Ser G1 & --  &         3 &  0.6 - 0.8 & 1.6 (2.1)  \\
\par
            & c$^{b}$  &   --       &    -- &    --    \\
\par
CoKu Ser G7 &--  &     1--3 &  0.6 -- 0.8 & 2 \\
\par
  V536 Aql &A &   1--3 &  0.6--0.8 & 1.8 (4.0)  \\
\par
           &B &      --    &      --     &  --  \\
\par
   MacC H3 &-- &  $\geq$5 &   1.5  & 1.8 (2.6) \\
\par
\hline
\par
\end{tabular}
%\end{center}
\par
Notes to table: the ages and the masses have been obtained from
the H-R diagram (Fig.\ \ref{masses}). The radii using $T_{*}$ and \Lstar\ from 
Table\ \ref{results}. The second radius, between brackets,
is the result of using alternative temperatures or luminosities suggested in Sect.3. 
\newline
$^a$~B62-\Ha2 is not really a companion, but a nearby star of V1725~Oph, associated to the same globule Barnard~62
\citep{Reipurth86, Weaver92}.
\newline
$^b$~Companion of CoKu~Ser/G1, also known as HBC~666 \citep{Cohen79}.
  % \vspace{3mm}
\end{table}