\begin{table}%ta1 \scriptsize \caption{\label{twa_lit}TW Hydrae association.} %\centering \par \begin{tabular}{l@{\hspace{.1cm}}l@{\hspace{.3cm}}r@{\hspace{.1cm}}r@{\hspace{.1cm}}r@{\hspace{.3cm}}r@{\hspace{.1cm}}r@{\hspace{.1cm}}l@{\hspace{.1cm}}r@{\hspace{.1cm}}r@{\hspace{.1cm}}r@{\hspace{.1cm}}r@{\hspace{.1cm}}r@{\hspace{.1cm}}c@{\hspace{.1cm}}c@{\hspace{.1cm}}c@{\hspace{.1cm}}l@{\hspace{.1cm}}l@{\hspace{.1cm}}l@{\hspace{.1cm}}l@{\hspace{.1cm}}} \hline\hline\noalign{\smallskip} Name & & \multicolumn{3}{c}{RA } & \multicolumn{3}{c}{Dec} & \multicolumn{1}{c}{V} & $B - V$ & $V - I$ & $M_V$ & \multicolumn{1}{c}{d} & \multicolumn{1}{c}{$v\sin i$} & Mass & Radius & Sp.T & mgr & n1 & n2\\ & & \multicolumn{3}{c}{(2000.0)} & \multicolumn{3}{c}{(2000.0)} & \multicolumn{1}{c}{(mag)} & (mag) & (mag) & (mag) & \multicolumn{1}{c}{(pc)} & \multicolumn{1}{c}{(km~s$^{-1}$)} & ($M_{\odot}$) & ($R_{\odot}$) & & & & \\ \hline TWHya & HIP~53911 & 11 & 1 & 51.90 & --34 & 42 & 17.0 & 10.50 & 0.97 & 1.70 & 6.88 & 53.00 & 6.00 & 1.0 & 1.4 & K6Ve & TWA & -- & m \\ TWA2 & CD-298887 & 11 & 9 & 13.80 & --30 & 1 & 40.0 & 11.07 & 1.48 & 2.24 & 8.01 & 41.00 & 12.60 & 0.6 & 1.5 & M2Ve & TWA & -- & m \\ TWA4 & HIP~55505 & 11 & 22 & 5.30 & --24 & 46 & 40.0 & 9.42 & 1.17 & 1.39 & 6.20 & 44.00 & 8.90 & 1.0 & 1.2 & K5V & TWA & -- & m \\ TWA5A & CD-337795 & 11 & 31 & 55.30 & --34 & 36 & 27.0 & 12.12 & 1.47 & 2.36 & 8.85 & 45.00 & 53.50 & 0.4 & 1.1 & M2Ve & TWA & -- & m \\ TWA7 & GSC7190-2111 & 10 & 42 & 30.10 & --33 & 40 & 17.0 & 11.65 & 1.46 & 2.44 & 9.41 & 28.00 & 4.40 & 0.3 & 1.0 & M2Ve & TWA & -- & m \\ TWA8A & CD-268623A & 11 & 32 & 41.20 & --26 & 51 & 56.0 & 12.23 & 1.46 & 2.41 & 9.27 & 39.00 & 6.60 & 0.4 & 1.0 & M3Ve & TWA & -- & m \\ TWA8B & xxxxx & 11 & 32 & 41.16 & --26 & 52 & 9.00 & 15.20 & 1.50 & 3.72 & 12.19 & 40.00 & 11.00 & 0.2 & 0.6 & M6 & TWA & -- & m \\ TWA9A & HIP~57589 & 11 & 48 & 24.30 & --37 & 28 & 49.0 & 11.26 & 1.26 & 1.62 & 7.10 & 68.00 & 11.26 & 0.9 & 1.1 & K5V & TWA & -- & m \\ TWA9B & CD-387429B & 11 & 48 & 24.30 & --37 & 28 & 49.0 & 14.00 & 1.43 & 2.58 & 9.84 & 68.00 & 8.39 & 0.3 & 0.9 & M1V & TWA & -- & m \\ TWA10 & GSC~7766-0743 & 12 & 35 & 4.20 & --41 & 36 & 39.0 & 12.96 & 1.43 & 2.47 & 9.38 & 52.00 & 3.00 & 0.3 & 1.0 & M2Ve & TWA & -- & m \\ TWA13A & CD-347390A & 11 & 21 & 17.20 & --34 & 46 & 46.0 & 11.46 & 1.42 & 1.89 & 7.76 & 55.00 & 12.30 & 0.8 & 1.1 & M1Ve & TWA & -- & m \\ TWA13B & CD-347390B & 11 & 21 & 17.40 & --34 & 46 & 50.0 & 11.96 & 1.47 & 2.08 & 8.26 & 55.00 & 12.00 & 0.7 & 1.0 & M5 & TWA & -- & m \\ TWA20 & xxx & 12 & 31 & 38.10 & --45 & 58 & 59.0 & 13.00 & 1.10 & 2.30 & 8.68 & 73.00 & 30.00 & 0.5 & 1.0 & M2 & TWA & -- & m \\ TWA25 & CD-397538 & 12 & 15 & 30.70 & --39 & 48 & 43.0 & 11.44 & 1.41 & 1.94 & 7.90 & 51.00 & 12.90 & 0.8 & 1.1 & M1Ve & TWA & -- & m \\ \hline \end{tabular} \tablefoot{Summary data from the literature and mass derived from evolutionary tracks. Note~n1~=~1 indicates that $V - I$ is derived from $B - V$. Note~n2~=~m indicates a confirmed member. } \end{table}