Chromosome maps (ChMs) of the innermost two arcmin of ωCen published by (Milone et al. 2017) (left panel) and of the 2–5 arcmin region constructed from the HST catalog of Häberle et al. (2024) (right panel). The 1P, 2P, AI, and AII stars are shown in green, violet, blue, and orange, respectively. The two dot-dashed black lines separate the lower, middle, and upper streams in each panel. Black crosses mark stars that are present in our spectroscopic dataset presented in Section 2.