ner_tags: O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B-Citation I-Citation I-Citation I-Citation I-Citation O B-Citation
tokens: some insight into the spatial structure of the segregated groups. The upper right panel of Fig. 2 shows the map of the median positions of the segregated bins over the grey-scale density contours of the group A sample, using the same colour code as in the spectrum and histogram. As could also be seen in the contour plot from Fig. 1 , group A has a bilobed northsouth double peak structure. The two bins associated with segregated group (in yellow) are located towards the western medium density structure and the lower density peak. When we consider the RV, these bins are consistent with the unconnected components A2 and A3 previously described. The bins associated with group (red) are spread over the bilobed structure: the two that comprise 1 are associated with the southern and the one constituting 2 with the northern lobe. The bins associated with segregated groups (green) and (cyan) are both clearly associated with the upper density peak. In the lower right panel of Fig. 2 , the median RV of each bin is shown against its median (with segregated bins coloured with the same colour code as in previously described panels), to highlight the trend of the whole of group A: bins with higher RV tend to be located towards the north. The trend is noisy but clear, particularly when we consider a linear fit of the data, shown in Fig. 2 as a purple line. Fig. 3 shows in four panels the coloured contours of the density distribution of the segregated groups plotted over the grey-scale density of the complete sample, following the same colour code as in Fig. 2 : from left to right and top to bottom the density map of (yellow), (red), (green), and (cyan). Once again, the relationship of the RV of each group with the declination of its density peak is clear. Group is mostly concentrated around the lower peak and the east/central structure, with the highest density in the western area. Group , which is also the one with the most members, is distributed along the whole bilobed structure, reaching the highest density in the lower peak. Group is dense in both peaks, but mostly in the northern one, with a trend towards the east. Finally, group is very clearly associated with the northern peak of the bilobed structure. When we consider the unconnected components of group 1 and 2 the general RV declination trend still applies: group 1, with a lower RV, peaks in the lower lobe, while 2 peaks around the centre of the spatial domain, between both lobes. Figure 3. Spatial distribution of the four segregated groups from the analysis of group A. In each panel, the coloured contours show the density star distribution of each segregated group, with the same colour code as in Fig. 2 , over the grey-scale density of the group A. From left to right and top to bottom: group , in yellow, with kms 1 , group , in red, with kms 1 , group , in green, with kms 1 , and group , in cyan, with kms 1 . We will now compare these results with those obtained by Frsz etal. ( 2006 ) and Tobin