\begin{table}%t2
\caption{\label{T3}Mean structural parameters of the host for the sample.}
%\centerline
 {\begin{tabular}{c c c c c}       
\hline\hline                 
 Parameter &   $B$   & $ V$   &  $R$   & Ref. \\
\hline 
$n$            &1.15 (0.55)&1.12 (0.44)&1.12 (0.45) & $a$  \\
$r_{\rm e}$    &1.11 (0.74)&1.05 (0.71)&1.09 (0.60)& $a$   \\
               &1.36 (1.23) & 1.22 (1.14) & 1.19 (0.72) & $b$ \\   
               &0.84& \nodata &1.06& $c$  \\
               &1.10& \nodata &1.25& $d$  \\
               & \nodata &0.83& \nodata & $e$  \\
$\mu_{\rm e}$  &22.59 (0.68)&22.19 (0.75)& 21.95 (0.76)& $a$   \\
               &23.56 (0.97) & 22.92 (0.98) & 22.53 (1.02) & $b$ \\
               &23.5&\nodata &22.8& $c$  \\
               &23.1&\nodata &22.5& $d$  \\
               & \nodata &22.8& \nodata & $e$  \\
\hline                                  
\end{tabular}}
\par
\smallskip
Notes: References: $a$~$=$~This work; $b$~$=$~C01a; $c$~$=$~\citet{GdP03}; $d$~$=$~\citet{Papade96a}; $e$~$=$~\citet{Hunter06}. Effective radii, $r_{\rm e}$, and surface brightnesses, $\mu_{\rm e}$, are expressed in kiloparsecs and magnitudes per square arcseconds.
Values in parentheses indicate the standard deviation for the sample.
  S\'ersic index for the~$b$, $c$, $d$, and $e$ references may be considered as $n$~$=$~1, since 
in these papers a pure exponential profile was fitted to the host surface brightness distribution.
\end{table}