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Fig. 2.

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Azimuthal velocity of the kinematic substructures in the radial direction, ϕ = 0°, Z = 0 kpc as a function of the radius and coloured by their radial velocity. Each dashed grey line corresponds to the best fit of a structure’s constant angular momentum line. Top: structures corresponding to the main peak of a moving group, tagged with the name from the literature. Bottom: secondary peaks of the moving groups. The usual way to observe this projection is using the number of stars or the mean VR in each bin (see Fig. 1 in Fragkoudi et al. 2019). The different lines delineate the skeleton of the distribution and its complexity.

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