**Table 1:** Parameters of the sample galaxies.
Object	Type		B_T	PA	i	$V_{\odot}$	D	Scale	R₂₅	M_{B_T}⁰	$R_{\rm last}/R_{25}$
											[stars]	[gas]
[name]	[RSA]	[RC3]	[mag]	[ $^\circ$ ]	[ $^\circ$ ]	[ $\rm km\;s^{-1}$ ]	[Mpc]	[pc/'']	['']	[mag]
⁽¹⁾	⁽²⁾	⁽³⁾	⁽⁴⁾	⁽⁵⁾	⁽⁶⁾	⁽⁷⁾	⁽⁸⁾	⁽⁹⁾	⁽¹⁰⁾	⁽¹¹⁾	⁽¹²⁾	⁽¹³⁾
NGC 210	Sb(rs)	SABb(s)	11.60	165	49	1650	23.2	113	150	-20.5	0.3	0.8
NGC 615	Sb(r)	SAb(rs)	12.47	155	67	1849	25.7	125	108	-20.3	0.7	0.9
NGC 1620	-	SABbc(rs)	13.08	25	70	3509	46.1	224	86	-21.1	0.7	1.2
NGC 2590	-	SAbc(s):	13.94	77	72	4960	63.4	308	67	-21.0	0.5	1.0
NGC 2708	-	SABb(s)pec?	12.80	25	60	1984	23.5	114	78	-19.4	0.6	0.8
NGC 2815	Sb(s)	SBb(r):	12.81	10	72	2535	30.0	145	104	-21.0	0.4	1.0
NGC 3054	SBbc(s)	SABb(r)	12.35	118	52	2430	28.5	138	114	-20.3	0.5	0.9
NGC 3200	Sb(r)	SABc(rs):	12.83	169	73	3526	43.4	211	125	-21.5	0.5	0.9
NGC 3717	Sb(s)	SAb:sp	12.24	33	81	1748	19.6	95	180	-20.5	0.4	0.5
NGC 4682	Sc(s)	SABcd(s)	13.14	83	61	2344	28.8	140	77	-20.0	0.3	0.8
NGC 5530	Sc(s)	SAbc(rs)	11.79	127	62	1092	11.7	57	125	-19.4	0.6	0.9
NGC 6118	Sc(s)	SAcd(s)	12.42	58	65	1580	21.4	104	140	-20.4	0.6	0.8
NGC 6878	Sc(r)	SAb(s)	13.45	125	40	5821	77.3	375	48	-21.3	0.6	1.0
NGC 6925	Sbc(r)	SAbc(s)	12.07	5	75	2783	37.7	183	134	-21.9	0.6	0.9
NGC 7083	Sb(s)	SAbc(s)	11.87	5	53	3093	39.7	192	116	-21.5	0.5	1.0
NGC 7412	Sc(rs)	SBc(s)	11.88	65	42	1712	22.7	110	116	-20.1	0.4	0.8
NGC 7531	Sbc(r)	SABbc(r)	12.04	15	67	1591	20.9	102	134	-20.2	0.4	0.6

NOTES - ⁽²⁾ Morphological classification from Sandage & Tammann (1981, RSA hereafter). ⁽³⁾ Morphological classification from RC3. ⁽⁴⁾ Total observed blue magnitude from RC3 except for NGC 3954, NGC 4682 and NGC 5530 (LEDA). ⁽⁵⁾ Major-axis position angle from RC3. ⁽⁶⁾ Inclination, derived as $\cos^{2}{i}~=~(q^2-q_0^2)/(1-q_0^2)$ . The observed axial ratio q is taken from RC3 and the intrinsic flattening q₀=0.11 has been assumed following Guthrie (1992). ⁽⁷⁾ Heliocentric velocity of the galaxy derived at the centre of symmetry of the rotation curve of the gas. $\Delta V_\odot = 10$ $\rm km\;s^{-1}$ . ⁽⁸⁾ 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 to the Local Group, as in RSA. ⁽¹⁰⁾ Radius of the 25 B mag arcsec^-2 isophote derived as R₂₅ = D₂₅/2 with D₂₅ from RC3. ⁽¹¹⁾ Absolute total blue magnitude corrected for inclination and extinction from RC3. ⁽¹²⁾ Radial extension of the stellar rotation curve in units of R₂₅ from this paper. ⁽¹³⁾ Radial extension of the ionized gas rotation curve in units of R₂₅ from this paper.

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