Table 1: Parameters of the sample galaxies.

Name		 Morphological type PA $V_\odot$ D $M^0_{B_{\rm T}}$ $D_{25} \times d_{25}$ i Minor-axis region
  [RSA] [RC3] [$^\circ$] [km s-1] [Mpc] [mag]   [$^\circ$] where $V_{\rm g}\neq0$
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
NGC 1638 Sa SAB0(rs)? 70 $3258\pm11$ 43.5 -20.42 $2\hbox{$.\mkern-4mu^\prime$ }0\times1\hbox{$.\mkern-4mu^\prime$ }5$ 43 ?
NGC 2855 Sa(r) (R)S0/a(rs) 120 $1897\pm17$ 22.3 -19.45 $2\hbox{$.\mkern-4mu^\prime$ }5\times2\hbox{$.\mkern-4mu^\prime$ }2$ 27 inner
NGC 3885 Sa S0/a(s) 123 $1952\pm 8$ 22.3 -19.44 $2\hbox{$.\mkern-4mu^\prime$ }4\times1\hbox{$.\mkern-4mu^\prime$ }0$ 69 inner
NGC 4224 Sa Sa(s): sp 57 $2624\pm 6$ 33.0 -20.07 $2\hbox{$.\mkern-4mu^\prime$ }6\times1\hbox{$.\mkern-4mu^\prime$ }0$ 69 inner
NGC 4235 Sa Sa(s) sp 48 $2249\pm11$ 28.1 -20.35 $4\hbox{$.\mkern-4mu^\prime$ }2\times0\hbox{$.\mkern-4mu^\prime$ }9$ 82 ?
NGC 4586 Sa Sa(s): sp 115 $815\pm 7$ 17.0 -19.04 $4\hbox{$.\mkern-4mu^\prime$ }0\times1\hbox{$.\mkern-4mu^\prime$ }3$ 73 inner
NGC 4984 Sa(s) (R)SAB0+ 90 $1279\pm 6$ 14.2 -18.73 $2\hbox{$.\mkern-4mu^\prime$ }8\times2\hbox{$.\mkern-4mu^\prime$ }2$ 38 extended
NGC 7049 S03(4)/Sa S0(s) 57 $2285\pm 6$ 29.6 -20.79 $4\hbox{$.\mkern-4mu^\prime$ }3\times3\hbox{$.\mkern-4mu^\prime$ }0$ 47 inner
NGC 7213 Sa(rs) Sa(s): 124 $1784\pm 6$ 23.1 -20.69 $3\hbox{$.\mkern-4mu^\prime$ }1\times2\hbox{$.\mkern-4mu^\prime$ }8$ 27 extended
NGC 7377 S02/3/Sa pec S0+(s) 101 $3339\pm11$ 45.7 -21.37 $3\hbox{$.\mkern-4mu^\prime$ }0\times2\hbox{$.\mkern-4mu^\prime$ }5$ 34 extended
Notes. - Column 2: morphological classification from RSA. Column 3: morphological classification from RC3. Column 4: major-axis position angle from RC3. Column 5: heliocentric systemic velocity derived from the center of symmetry of the rotation curve of the gas along the galaxy major axis. Column 6: distance obtained as V0/H0 with H0=75  $\rm km\;s^{-1}\;Mpc^{-1}$ and V0 the systemic velocity derived from $V_\odot$ corrected for the motion of the Sun with respect of the Local Group according to the RSA. For NGC 4586 we assumed the distance of the Virgo Cluster by Freedman et al. (1994). Column 7: absolute total blue magnitude corrected for inclination and extinction from RC3. Column 8: major and minor isophotal diameters from RC3. Column 9: inclination derived from $\cos^{2}{i}~=~(q^2-q_0^2)/(1-q_0^2)$ assuming the observed axial ratio q=d25/D25 from RC3 and the typical intrinsic axial ratio for S0/Sa and Sa galaxies (q0=0.18, Guthrie 1992). Column 10: minor-axis region where non-zero velocity is measured for the ionized gas. Inner = non-zero velocity is confined to the nuclear region; extended = non-zero velocity is observed out to the last measured radius; ? = doubtful velocity gradient.


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