Table 6: Column 1: name of the scenario in the text - Col. 2: time since last interaction between the two clumps - Col. 3: angle between the plane of the sky and the line connecting the centres of the two clumps - Col. 4: relative velocity between the two clumps - Col. 5: spatial separation between the two systems - Col. 6: state of the systems for the possible solutions.
Scenario T₀ $\alpha$ V R Solutions

[Gyr] [deg] [km s^-1] [Mpc]

a1 12.6 84.3 89.4 7.5 Outgoing

a2 12.6 83.5 89.6 6.5 Incoming

a3 12.6 2.2 2318.4 0.7 Incoming

b 0.3 4.9 1041.9 0.7 Outgoing

c 0.5 27.8 190.8 0.8 Outgoing

d1 1.0 55.2 108.4 1.3 Outgoing

d2 1.0 50.6 115.2 1.2 Incoming

d3 1.0 4.7 1086.2 0.7 Incoming

**Table 6:** Column 1: name of the scenario in the text - Col. 2: time since last interaction between the two clumps - Col. 3: angle between the plane of the sky and the line connecting the centres of the two clumps - Col. 4: relative velocity between the two clumps - Col. 5: spatial separation between the two systems - Col. 6: state of the systems for the possible solutions.
Scenario	T₀	$\alpha$	V	R	Solutions
	[Gyr]	[deg]	[km s^-1]	[Mpc]
a1	12.6	84.3	89.4	7.5	Outgoing
a2	12.6	83.5	89.6	6.5	Incoming
a3	12.6	2.2	2318.4	0.7	Incoming
b	0.3	4.9	1041.9	0.7	Outgoing
c	0.5	27.8	190.8	0.8	Outgoing
d1	1.0	55.2	108.4	1.3	Outgoing
d2	1.0	50.6	115.2	1.2	Incoming
d3	1.0	4.7	1086.2	0.7	Incoming

Source LaTeX | All tables | In the text

	1 Introduction
	2 The data
	3 Cluster membership
	4 Colour properties and spatial morphology of A3921
	5 Cluster kinematics
	6 Dynamical study of the system
	7 Spectral properties of the cluster members
	8 Discussion and conclusions
	Appendix A: Red sequence identification
	References