Table 1: Physical and observational parameters of the sample.
Galaxy $\alpha$ $\delta$ Type $v_{\rm r}$ Gal. size $t_{\rm R}$ $t_{\rm V}$ Comm.

km s^-1 $\hbox{$^\prime$ }^2$ s s

NGC 520 01:21:52 03:34:56 S pec 2266 1.9 $\times$ 0.7 300 600 Arp 157

NGC 772 01:56:26 18:45:05 SA(s)b 2472 7.2 $\times$ 4.3 300 500 Arp 78

Arp 141 07:08:12 73:33:56 E 2735 - 500 600 -

NGC 3226/7 10:20:47 20:07:00 E2:pec 1151 3.2 $\times$ 2.8 600 600 Arp 94

NGC 3656 11:20:50 54:07:06 (R')I0:pec 2860 1.6 $\times$ 1.6 600 600 Arp 155

Arp 299 11:25:42 58:50:14 SBm pec 3132 1.2 $\times$ 1.0 200 - NGC 3690

**Table 1:** Physical and observational parameters of the sample.
Galaxy	$\alpha$	$\delta$	Type	$v_{\rm r}$	Gal. size	$t_{\rm R}$	$t_{\rm V}$	Comm.
				km s^-1	$\hbox{$^\prime$ }^2$	s	s
NGC 520	01:21:52	03:34:56	S pec	2266	1.9 $\times$ 0.7	300	600	Arp 157
NGC 772	01:56:26	18:45:05	SA(s)b	2472	7.2 $\times$ 4.3	300	500	Arp 78
Arp 141	07:08:12	73:33:56	E	2735	-	500	600	-
NGC 3226/7	10:20:47	20:07:00	E2:pec	1151	3.2 $\times$ 2.8	600	600	Arp 94
NGC 3656	11:20:50	54:07:06	(R')I0:pec	2860	1.6 $\times$ 1.6	600	600	Arp 155
Arp 299	11:25:42	58:50:14	SBm pec	3132	1.2 $\times$ 1.0	200	-	NGC 3690

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