\begin{table}%t1
%\centering
\par
\caption{\label{tab-list}Name, abbreviation, age, and mean distance of the nearby associations under study (Torres et~al. \cite{Torres08}), together with the number of known members; late-type (later than F) members selected for period search; total number of periodic members; periodic members discovered from ASAS photometry; periodic  members with period adopted from the literature; new periods determined from this study (and periods revised by us  with respect to earlier literature values).}
\begin{tabular}{l l cccccccc}
\hline\hline \noalign{\smallskip}
Association & Abbrev. & Age  & Distance & known   & Late-type & Periodic  & ASAS   &  Literature & New period \\
&        & (Myr)& (pc)     & members & members   & members   & period &  period     & (+revised) \\
\hline
\object{TW Hydrae}			& TWA	            & 8  & 48 & 36 & 29 & 23 & 12 & 11 & 4 (+0)\\
 \object{$\beta$ Pictoris} 		& $\beta$ Pic 	& 10 & 31 & 51 & 32 & 27 & 25 & 2 & 10 (+1)\\
 \object{Tucana/Horologium} 		&Tuc/Hor	& 30 & 48 & 54 & 35 & 29 & 27 & 2 & 19 (+5)\\
 \object{Columba} 			       & Col 	& 30 & 82 & 35 & 23 & 19 & 19 & 0 & 15 (+2) \\
 \object{Carina} 				& Car  	& 30 & 85 & 23 & 21 & 19 & 19 & 0 & 16 (+1) \\
 \object{AB Doradus} 			& AB~Dor		& 70\tablefootmark{a} & 34 & 91 & 64 & 48 & 42 & 6 & 29 (+1) \\ 
\hline
\end{tabular}
\tablefoot{\tablefoottext{a}{Value taken from the literature but different from our estimate.}}
\end{table}