\begin{table}%T2
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\par
\caption{Important physical parameters and DIG properties of the H$\alpha$ 
survey galaxies.}\label{tab2}
\begin{tabular}{lcccccccc}
\hline\hline
Galaxy & $S_{60}/S_{100}$ & $D$ & $a_{25}$ & $L_{\rm{FIR}}/D^2_{25}$ & 
DIG morph.$^{\footnotesize a}$ & Radio halo & X-ray halo & Refs.\\ 
& & [Mpc] & [$'$] & [$\rm{10^{40}~erg~s^{-1}~kpc^{-2}}$] & & (thick disk) 
& & \\
%\noalign{\smallskip}
\hline
NGC~5775$^\star$ & 0.3415 & 26.7 & ~~3.8 & {\bf 21.49} & h$_{\rm b}$,f,pl 
& $\bullet$ & $\bullet$ & (6); (11); (12)\\
NGC~4945$^\star$ & 0.5661 & ~~7.5 & 20.4 & {\bf 14.79} & f,h$_{\rm b}$,pl 
& $\bullet$ & & \\
NGC~3221 & 0.3738 & 54.7 & ~~3.1 & {\bf 13.80} & ee,f,h$_{\rm f}$ & 
$\bullet$ & & (10)\\
NGC~4634 & 0.3720 & 19.1 & ~~2.6 & {\bf 11.84} & ee,f,h$_{\rm b}$,pa & 
& & \\
NGC~4402 & 0.3320 & 22.0 & ~~3.9 & {\bf ~~7.82} & ee,f,pa & & & \\
IC~2135$^b$ & 0.4051 & 17.7 & ~~2.8 & {\bf ~~7.28} & e,h,p & & & \\
ESO~121--6 & 0.3256 & 16.2 & ~~3.9 & {\bf ~~7.05} & h$_{\rm f}$ & & & \\
NGC~3044$^\star$ & 0.4633 & 17.2 & ~~4.9 & {\bf ~~6.72} & ee,f,h$_{\rm b}$ & $\bullet$ & $\bullet$ & (8);(13) \\
NGC~4388$^\star$ & 0.6127 & 33.6 & ~~5.5 & {\bf ~~5.53} & f,h$_{\rm f}$,pa & $\bullet$ & & \\
NGC~3628$^\star$ & 0.4694 & ~~7.7 & 12.9 & {\bf ~~5.02} & ee,f,pl & 
$\bullet$ & $\bullet$ & (4)\\
NGC~4700 & 0.5074 & 24.0 & ~~3.0 & {\bf ~~4.99} & h$_{\rm b}$,f,pa & 
$\bullet$ & & (5)\\
ESO~209--9 & 0.2948 & 14.9 & ~~6.2 & {\bf ~~4.56} & h$_{\rm b}$,pa,pl & 
& & \\
NGC~3877 & 0.2486 & 12.1 & ~~5.3 & {\bf ~~4.15} & ee,f,pl & & & \\
NGC~4302$^\star$ & 0.2136 & 18.8 & ~~5.5 & {\bf ~~3.69} & ee,pl & 
$\bullet$ & & (9)\\
ESO~379--6 & 0.2452 & 39.8 & ~~2.6 & {\bf ~~3.67} & ee,pl & & & \\
ESO~117--19 & 0.2759 & 71.4 & ~~2.0 & {\bf ~~3.51} & d & & & \\
IC~5176 & 0.3044 & 23.3 & ~~4.5 & {\bf ~~3.51} & ee,h$_{\rm f}$ & 
$\bullet$ & & (7)\\
NGC~7462 & 0.4492 & 14.1 & ~~4.0 & {\bf ~~3.34} & f,h$_{\rm f}$,pl & 
$\bullet$ & & (5)\\
UGC~260 & 0.3761 & 28.5 & ~~2.7 & {\bf ~~3.30} & eh2,f,h$_{\rm f}$,pec & 
& & \\
NGC~891$^\star$ & 0.2089 & ~~9.5 & 14.0 & {\bf ~~3.19} & ee,eh2,f,h$_{\rm 
b}$ & $\bullet$ & $\bullet$ & (1); (3)\\
NGC~1247 & 0.3604 & 52.6 & ~~3.4 & {\bf ~~2.92} & d,pa & & & \\
ESO~362--11 & 0.3295 & 17.9 & ~~4.7 & {\bf ~~2.63} & h$_{\rm f}$ & & & \\
NGC~5290 & 0.3139 & 34.4 & ~~3.7 & {\bf ~~2.57} & ee,f,h$_{\rm b}$ & & & \\
IC~1862 & 0.3357 & 85.3 & ~~2.8 & {\bf ~~2.48} & d,n & & & \\
IC~4837A & 0.2605 & 37.9 & ~~4.1 & {\bf ~~2.42} & d & & & \\
NGC~3936 & 0.2447 & 29.0 & ~~3.9 & {\bf ~~2.03} & d,n & & & \\
NGC~7090 & 0.3287 & 11.4 & ~~7.7 & {\bf ~~1.95} & a,ee,f,h$_{\rm f}$ & 
$\bullet$ & & (5)\\
NGC~360 & 0.1609 & 30.7 & ~~3.5 & {\bf ~~1.94} & d,ee,pl & & & \\
IC~5171 & 0.3101 & 34.1 & ~~3.0 & {\bf ~~1.86} & d & & & \\
NGC~2683 & 0.1976 & ~~5.5 & ~~8.8 & {\bf ~~1.76} & d,n & $\bullet$ & 
& (10)\\
NGC~5297 & 0.2714 & 67.5 & ~~5.4 & {\bf ~~1.69} & d,n & $\bullet$ & 
& (10)\\
NGC~3003$^\star$ & 0.3434 & 19.7 & ~~6.0 & {\bf ~~1.65} & d,n & & & \\
NGC~2188$^\star$ & 0.4301 & ~~7.9 & ~~4.7 & {\bf ~~1.63} & f,h$_{\rm f}$,pl& & & \\
NGC~6875A & 0.3048 & 42.4 & ~~2.8 & {\bf ~~1.56} & ee?,pa & & & \\
IC~4351 & 0.1947 & 35.5 & ~~6.0 & {\bf ~~1.48} & n & & & \\
IC~5096 & 0.2280 & 41.9 & ~~3.2 & {\bf ~~1.42} & n & & & \\
IC~5071 & 0.2472 & 41.6 & ~~3.4 & {\bf ~~1.41} & d & & & \\
NGC~7184 & 0.2588 & 34.1 & ~~6.0 & {\bf ~~1.38} & d,n & & & \\
NGC~3600 & 0.4362 & ~~9.6 & ~~4.1 & {\bf ~~1.30} & ee & $\circ$ & & (9) \\
IC~2058 & 0.2982 & 18.2 & ~~3.1 & {\bf ~~1.15} & n & & & \\
NGC~7361 & 0.2669 & 15.9 & ~~3.8 & {\bf ~~1.07} & d,n & & & \\
NGC~7064 & 0.6250 & 11.4 & ~~3.4 & {\bf ~~1.06} & ee,h$_{\rm f}$,pl & 
$\bullet$ & & (7)\\
NGC~669 & 0.2455 & 62.4 & ~~3.1 & {\bf ~~1.04} & n & & & \\
ESO~240--11 & 0.1776 & 37.9 & ~~5.3 & {\bf ~~1.00} & n & $\bullet$ & 
& (7)\\
IC~5052 & 0.3112 & ~~7.9 & ~~5.9 & {\bf ~~1.00} & a,ee,h$_{\rm b}$,pl & 
& & \\
UGC~12281$^\star$ & 0.1830 & 34.2 & ~~3.5 & {\bf ~~0.98} & n & & & \\
MCG-01-53-012 & 0.2067 & 79.5 & ~~3.0 & {\bf ~~0.94} & n & & & \\
UGC~4559 & 0.2721 & 27.8 & ~~3.2 & {\bf ~~0.89} & n & & & \\
UGC~10288$^\star$ & 0.2370 & 27.3 & ~~4.8 & {\bf ~~0.89} & n & $\bullet$ 
& & (9)\\
NGC~24 & 0.3396 & ~~6.8 & ~~5.8 & {\bf ~~0.77} & d,n & & & \\
NGC~4256 & 0.1794 & 33.7 & ~~4.1 & 
{\bf ~~0.71} & d,n & & & \\
ESO~540--16 & 0.3692 & 20.7 & ~~2.7 & 
{\bf ~~0.64} & d & & & \\
NGC~4216 & 0.1221 & 16.8 & ~~7.9 & 
{\bf ~~0.59} & d,n & & & \\
NGC~2654 & 0.1882 & 17.9 & ~~4.2 & 
{\bf ~~0.57} & d,n & & & \\
NGC~5965 & 0.2769 & 45.5 & ~~4.7 & 
{\bf ~~0.55} & d,n & & & \\
NGC~4206 & 0.2054 & 16.8 & ~~5.2 & 
{\bf ~~0.53} & d,pa & & & \\
NGC~7640 & 0.2259 & ~~8.6 & ~~9.9 & 
{\bf ~~0.45} & d,n & & & \\
NGC~4235 & 0.4896 & 32.1 & ~~3.8 & 
{\bf ~~0.37} & ee,h$_{\rm f}$ & $\bullet$ & & (2)\\
\hline
UGC~2082 & 0.2356 & ~~9.4 & ~~5.4 & 
{\bf ~~0.35} & d,n & & & \\
NGC~5170 & 0.2796 & 20.0 & ~~8.3 & 
{\bf ~~0.34} & n & & & \\
NGC~100 & 0.1971 & 11.2 & ~~5.6 & 
{\bf ~~0.21} & n & & & \\
ESO~274--1 & 0.5055 & ~~7.0 & 11.0 & 
{\bf ~~0.19} & ee,f & & & \\
\hline
MCG-2-3-16 & -- & 17.9 & ~~3.0 & 
{\bf ~~} & a,n & & & \\
UGC~1281 & -- & ~~4.6 & ~~4.5 & 
{\bf ~~} & n & $\circ$ & & (9)\\
IC~2531 & -- & 33.0 & ~~6.9 & 
{\bf ~~} & pl & & & \\
NGC~3365 & -- & 13.2 & ~~4.4 & 
{\bf ~~} & d,n & & & \\
NGC~3501 & -- & 15.1 & ~~3.5 & 
{\bf ~~} & n & $\circ$ & & (9)\\
NGC~6722 & -- & 76.7 & ~~2.9 & 
{\bf ~~} & n & & & \\
ESO~142--19 & -- & 56.2 & ~~4.4 & 
{\bf ~~} & n & & & \\
IC~4872 & -- & 25.7 & ~~3.5 & 
{\bf ~~} & n & & & \\
UGC~11841 & -- & 79.9 & ~~2.8 & 
{\bf ~~} & n & $\circ$ & & (9)\\
NGC~7339 & -- & 17.9 & ~~2.7 & 
{\bf ~~} & n& & & \\
NGC~7412A & -- & 12.4 & ~~3.5 & 
{\bf ~~} & a,n & & & \\
UGC~12423 & -- & 64.5 & ~~3.4 & 
{\bf ~~} & n & $\circ$ & & (9)\\
\hline
\end{tabular}
\par
\smallskip
$^{a}$ a~=~arc(s), d~=~disk emission (only 
planar DIG), ee~=~extended emission (locally), eh2~=~extraplanar 
\hbox{H~{\sc ii}} region(s), f~=~filament(s), h$_{\rm b}=\rm bright$ halo, h$_{\rm f}=\rm faint$ 
halo, n~=~no (e)DIG, pa~=~patch(es), pec~=~peculiar, pl~=~plume(s). 
\par
\smallskip
References: (1) Bregman \& Pildis (1994); (2) 
Colbert et~al. (1996); (3) Dahlem et~al. (1994); (4) Dahlem et~al. (1996); 
 (5) Dahlem et~al. (2001); (6) Duric et~al. (1998); (7) 
Harnett \& Reynolds (1991); (8) Hummel \& van der Hulst (1989);  
 (9) Hummel et~al. (1991); (10) Irwin et~al. (1999); (11) 
T\"ullmann et~al. (2000); (12) Rossa et~al. (2002); 
 (13) Rossa et~al., in prep.\\
 $^{b}$IC~2135 was formerly 
known as NGC~1963 ($\bullet$ = detection, $\circ$~= non-detection). 
\end{table}