**Table 6:** General H I properties of companion galaxies.
	NGC 1511a	NGC 1511b	NGC 4562	NGP9 F378-0021557	2MASX J12485413-1140424
$\alpha$ (2000)	04:00:17.9	04:00:53.2	12:35:34.8	12:36:20.2	12:48:54.2
$\delta$ (2000)	-67:48:26	-67:36:38	+25:51:09	+26:04:59	-11:40:32
D (Mpc)^a	17.5	17.5	9.7	9.7	25.5
$v_{\rm hel}$ (km s^-1)	1339 $\;\pm\;$ 5	1420 $\;\pm\;$ 10	1347	1260 $\;\pm\;$ 5	1329 $\;\pm\;$ 5
$v_{\rm max}$ (km s^-1)	55 $\;\pm\;$ 10	27	33	-	-
i ( $^\circ$ )	-	81	86	-	-
PA ( $^\circ$ )	268	85	121	-	0 $\;\pm\;$ 5
$f_{\rm HI}$ (Jy km s^-1)	2.91	4.79	5.34	0.91	3.10
$M_{\rm atom}$ (10⁹ $M_{\odot}$ )	0.28	0.47	0.16	0.027	0.64

Notes:
^a Distances are based on H₀ = 75 Mpc km s^-1 and a virgocentric infall velocity of 300 km s^-1 (cf. Dahlem et al. 2001). They are assumed here to be the same as those of the dominant galaxies in the respective groups (Table 5).

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations and data reduction
	3 Results
	4 Discussion
	References
	Online Material
	Appendix A: New 1.4 GHz radio continuum images