\begin{table}%t2
%\centering
\par
\caption {\label{sigmaproperties}Results of the morphological
classification of dust structure and \ha{} nuclear and circumnuclear
structure of the 20~galaxies from the $\sigma$-drop sample. ID of the
galaxy (Col.~1); morphological type (RC3, Col.~2); nuclear activity
(from NED, Col.~3); distance in Mpc, (Col.~4); $B$~magnitude
(NED, Col.~5); axis ratio~$d/D$ (NED, except
in NGC~1097 where we measured~$d/D$ from the \ha{} ring and NGC~6814 that looks face-on), (Col.~6); dust
structure within the radius $r_{\textrm{c}}$ (Col.~7); nuclear \ha{}
structure (Col.~8); circumnuclear \ha{} structure (Col.~9). Statements
such as ``Ring+Patchy'' describe in which order we find each
\ha{} structure, starting at the nucleus.}
\begin{tabular}{l c c c c c c c c}
\hline\hline
ID & Type & Activity & Distance & $B$ & $d/D$ & Dust & Nucl \ha{} & Circ. nucl\\
&(RC3)&(NED)&(Mpc)&Magnitude& &structure & structure &\ha{} structure\\
\hline
NGC~1068&RSAT3& Sy1 Sy2   &15.3&$-$21.47&0.87&TW&   Amorphous&  Filaments   \\
NGC~1097&.SBS3&    Sy1    &15.2&$-$20.89&1.00&LW&    Peak    & Diffuse+Ring \\
NGC~1808&RSXS1&    Sy2    &10.9&$-$19.91&0.34&LW&    Peak    &  Ring+Patchy \\
NGC~2460&.SAS1&    --     &23.8&$-$19.75&0.74&C &     --     &      --      \\
NGC~2639&RSAR1&  Sy1.9    &48.7&$-$21.10&0.76&LW&     --     &      --      \\
NGC~2775&.SAR2&    --     &19.2&$-$20.60&0.79&N &     --     &      --      \\
NGC~3021&.SAT4&    --     &23.9&$-$19.79&0.59&TW&     --     &      --      \\
NGC~3412&.LBS0&    --     &11.3&$-$18.97&0.55&N &     --     &      --      \\
NGC~3593&.SAS0&\hii{} Sy2 & 9.9&$-$18.28&0.39&C &    Peak    &     Ring     \\
NGC~3623&.SXT1&   LINER   &12.6&$-$20.94&0.26&C &    Peak    &     None     \\
NGC~3627&.SXS3& LINER Sy2 &12.8&$-$21.46&0.45&C &   Amorphous&     None     \\
NGC~4030&.SAS4&    --     &21.1&$-$20.76&0.71&TW&     --     &      --      \\
NGC~4303&.SXT4&\hii{} Sy2 &23.1&$-$21.84&0.89&LW&     --     &      --      \\
NGC~4477&.LBS.&    Sy2    &21.0&$-$20.43&0.87&TW&     --     &      --      \\
NGC~4579&.SXT3&LINER Sy1.9&23.0&$-$21.69&0.78&CS&Peak+Bipolar Structure+UCNR&Filaments\\
NGC~4725&.SXR2&    Sy2    &13.2&$-$21.69&0.69&C &     --     &      --      \\
NGC~4826&RSAT2&    Sy2    & 7.5&$-$20.64&0.49&TW&    Peak    &    Patchy    \\
NGC~6503&.SAS6& \hii/LINER& 5.2&$-$18.70&0.33&C &    Peak    &  Ring+Patchy \\
NGC~6814&.SXT4&    Sy1.5  &22.6&$-$20.48&1.00&GD&     --     &      --      \\
NGC~6951&.SXT4& LINER Sy2 &24.4&$-$21.86&0.71&LW&    Peak    &     Ring     \\
\hline
\end{tabular}
\end{table}