**Table 1:** Global parameters of the galaxies.
	Unit	Source	NGC 2634	NGC 2810	NGC 3348	NGC 4339	IC 2179
Type		NED¹	E1:	E	E0	E0	E1
V_r	km s^-1	NED	2258	3572	2837	1289	4336
Distance	Mpc	LEDA²	34.7	53.5	44.3	18.2(Virgo)	64.6
D₂₅	arcmin	LEDA	1.7	1.7	2.0	2.4	1.1
D₂₅	kpc	LEDA	17.2	26.5	25.8	12.7	20.7
B_T⁰	mag	RC3³	12.71	13.07	11.84	12.31	13.21
M_B	mag	LEDA	-20.0	-20.7	-21.7	-19.3	-20.9
(B-V)_T⁰	mag	RC3	0.90	0.95	0.95	0.90	0.93
(U-B)_T⁰	mag	RC3	0.48	-	0.44	0.50	0.52
$\sigma_0$	km s^-1	LEDA	$182\pm4$	$223\pm8$	$238 \pm 10$	$113 \pm 4$	$146 \pm 52$
$r_{\rm e}$	arcsec	(see notes)	18⁴	14⁵	22⁴	26⁵	15⁵
Environment		NOG⁶	group,	field?	group,	Virgo	group,
			off-center		centre	cluster	near centre

¹ NASA/IPAC Extragalactic Database. ² Lyon-Meudon Extragalactic Database. ³ Third Reference Catalogue of Bright Galaxies. ⁴ Trujillo et al. (2004). ⁵ This work. ⁶ Giuricin et al. (2000).

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