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Fig. 2

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Integrals of motion (top row) and velocity (bottom row) space for local halo stars, shown in light grey. The substructures relevant to this work are shown by coloured markers, and those that we have derived chemical abundances of are marked as larger symbols with a black outline. The Nissen & Schuster (2010,2011) and Reggiani et al. (2017) samples are included here since we used these datasets as a comparison. For Nissen & Schuster (2010,2011) stars the sample is split into high-α and low-α samples, shown as grey open diamond symbols and grey filled circles respectively. The Reggiani et al. (2017) sample are shown as grey open square symbols. The Helmi Streams and Sequoia stars with abundances from Matsuno et al. (2022b,a) are shown in the relevant colour with a black outline. We also show the position of NGC 3201 as a green star since it is located very close to the ED-3 stars in all three IoM.

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