\begin{table}%t2
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\par
\caption{\label{tab_diskbin}Sub-samples used to investigate the dependence of $v\sin i$ on the evolutionary state of the stars. }             % title of Table
     % is used to refer this table in the text
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\begin{tabular}{l l c ccccl}        % centered columns (4 columns)
\hline\hline  
\noalign{\smallskip}               % inserts double horizontal lines
Sub-sample & Description & $n_{\rm stars}$ & $n_{\rm M-stars}$ & $\langle{\rm Age}\rangle$ & $\langle v\sin i\rangle $ & $\sigma_{v\sin i}$ & Results\\    % table heading
 & & & & Myr & km~s$^{-1}$ & km~s$^{-1}$ &\\
\hline                        % inserts single horizontal line
   (i) & accreting stars & 11 & 3 & 5 & $10\pm 1$ & $3\pm 1$ & small $\langle v\sin i\rangle$, no fast rotators\\
   (ii) & non-accreting stars, thick disks & 12 & 4 & 7 & $15\pm 2$ & $8\pm 2$ & larger $\langle v\sin i\rangle$, fast rotators\\
   (iii) & stars with debris disks & 23 & 2 & 33 & $10\pm 1$ & $5\pm 1$ & small  $\langle v\sin i\rangle$, fast rotators\\
   (iv) & stars without disks & 81 & 1 & 90 & $11\pm 1$ & $4\pm 1$ & small  $\langle v\sin i\rangle$, tail of fast rotators\\
   (v) & no disk info, same age as (iv) & 81 & 3 & 90 & $7\pm 1$ & $2\pm 1$ & similar to (iv)\\
   (iv)+(v) & combined (iv)+(v) & 162 & 4 & 90 & $8\pm1$ & $2\pm1$ & small  $\langle v\sin i\rangle$, tail of fast rotators \\
\hline                                   %inserts single line
\end{tabular}
\tablefoot{We list the selection criteria for the sub-sample, the number of stars and M-type lower-mass stars, mean age, $v\sin i$, and the width of the Gaussian fit to the distribution $\sigma_{v\sin i}$.}
\end{table}