Table 4
Characteristics of the ICs formed in the remnants.
| Model | Global structure | Substructure | Rotation | Detectable features |
| (1) | (2) | (3) | (4) | (5) |
|
|
||||
| (a) M6 Ps Db | Nested IDs (thin and thick) | Clumps | Co-rot. | – |
| (b) M6 Ps Rb | Nested IDs (both thick) | Oval distortion | Counter-rot. | h4 > 0 at the ID location. |
| (c) M6 Pl Db | Nested IDs (both thin) | Clumps | Co-rot. | ϵ and PA trends of weak oval distortion. |
| (d) M6 Pl Rb | IR + ID (thick) | Clumps | Counter-rot. | ϵ and PA trends of weak oval distortion. |
| Ring sections in h3 and h4 maps. | ||||
| Dumbbell structure in σ map. | ||||
| (e) M6 Ps Ds | Bulge + ID (thick) | – | Co-rot. | – |
| (f) M6 Ps Rs | Bulge + ID (thick) | – | Counter-rot. | Central dip in σ map. |
| Dumbbell structure in σ map. | ||||
|
|
||||
| (g) M9 Ps Db | Nested IDs (thin and thick) | Clumps | Co-rot. | h4 > 0 at the ID location. |
| (h) M9 Ps Rb | ID (thin) | Clumps | Counter-rot. | – |
|
|
||||
| (i) M18 Ps Db | IR + ID (thin) | Clumps, spiral arms | Co-rot. | h4 > 0 at the ID location. |
| (j) M18 Ps Rb | ID (thin) | Irregular clumpy structure | Counter-rot. | Central dip in σ map. |
| (k) M18 Pl Db | Nested IDs (thin) | Ring relics | Co-rot. | – |
| (l) M18 Pl Rb | IR + ID (thin) | Pseudo-ring | Counter-rot. | – |
|
|
||||
Notes. Columns: (1) model code; (2) global structure of the formed IC in each remnant, as derived from the radial and vertical surface density profiles shown in Figs. 2, 3 (Sects. 3.2.1–3.2.2); (3) substructure found in the face-on surface density maps of Figs. 4, 5 (Sect. 3.2.3); (4) rotation sense of the IC with respect to the global rotation pattern of the remnant (co- or counter-rotating), as obtained in Sect. 3.2.6; (5) special detectable features present in the global ellipticity and position angle (PA) profiles and in the global kinematical maps of the final remnant, pointing to the existence of these ICs. All the ICs exhibit abrupt changes in the trends of ϵ and PA profiles at the limits of the ICs, as well as rotation in the centre, so none of these two features are listed in the table (see Figs. 12–15 in Sect. 3.3).
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