\begin{table}%t1
%\centering
\par
\caption{\label{source} Source of the velocity dispersion profiles or 2D maps that we used to construct the samples.}
\begin{tabular}{l c | l c}
\hline\hline
\multicolumn{2}{c|}{$\sigma$-drop sample}&\multicolumn{2}{c}{Control sample}\\
Galaxy & Source & Galaxy & Source\\
\hline
NGC~1068 & Dumas et~al.~(\cite{Dumas07}) & NGC~488 & Ganda et~al.~(\cite{Ganda06})\\
NGC~1097 & Emsellem et~al.~(\cite{Emsellem01}) & NGC~864 & Ganda et~al.~(\cite{Ganda06})\\
NGC~1808 & Emsellem et~al.~(\cite{Emsellem01}) & NGC~1566 & Bottema (\cite{Bottema93})\\
NGC~2460 & Shapiro et~al.~(\cite{Shapiro03}) & NGC~2964 & Ganda et~al.~(\cite{Ganda06})\\
NGC~2639 & M\'arquez et~al.~(\cite{Marquez03}) & NGC~2985 & Dumas et~al.~(\cite{Dumas07})\\
NGC~2775 & Shapiro et~al.~(\cite{Shapiro03}) & NGC~3031 & H\'eraudeau \& Simien (\cite{Heraudeau98})\\
NGC~3021 & H\'eraudeau et~al.~(\cite{Heraudeau99}) & NGC~3169 & H\'eraudeau \& Simien (\cite{Heraudeau98})\\
NGC~3412 & Aguerri et~al.~(\cite{Aguerri03}) & NGC~3198 & Bottema (\cite{Bottema93})\\
NGC~3593 & Bertola et~al.~(\cite{Bertola96}) & NGC~3227 & Dumas et~al.~(\cite{Dumas07})\\
NGC~3623 & Falc\'on-Barroso et~al.~(\cite{FalconBarroso06}) & NGC~3368 & H\'eraudeau et~al.~(\cite{Heraudeau99})\\
NGC~3627 & Dumas et~al.~(\cite{Dumas07})& NGC~3675 & H\'eraudeau \& Simien (\cite{Heraudeau98})\\
NGC~4030 & Ganda et~al.~(\cite{Ganda06}) & NGC~3718 & H\'eraudeau \& Simien (\cite{Heraudeau98})\\
NGC~4303 & H\'eraudeau \& Simien (\cite{Heraudeau98}) & NGC~4102 & Ganda et~al.~(\cite{Ganda06})\\
NGC~4477 & Jarvis et~al.~(\cite{Jarvis88}) & NGC~4151 & Dumas et~al.~(\cite{Dumas07})\\
NGC~4579 & Dumas et~al.~(\cite{Dumas07}) & NGC~4459 & Dumas et~al.~(\cite{Dumas07})\\
NGC~4725 & H\'eraudeau et~al.~(\cite{Heraudeau99}) & NGC~5055 & Dumas et~al.~(\cite{Dumas07})\\
NGC~4826 & H\'eraudeau \& Simien (\cite{Heraudeau98}) & NGC~6340 & Bottema (\cite{Bottema93}) \\
NGC~6503 & Bottema \& Gerritsen (\cite{Bottema97}) & NGC~6501 & Falc\'on-Barroso et~al.~(\cite{FalconBarroso06})\\
NGC~6814 & M\'arquez et~al.~(\cite{Marquez03}) & NGC~7331 & H\'eraudeau et~al.~(\cite{Heraudeau99})\\
NGC~6951 & Dumas et~al.~(\cite{Dumas07}) & NGC~7742 & Falc\'on-Barroso et~al.~(\cite{FalconBarroso06}) \\
\hline
\end{tabular}
\end{table}