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Fig. 9

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Properties of a typical star in the tidal tails. The direct measurement of ΔL of a typical star and the contributions to that ΔL, the tangential velocity δvϕ relative to the cluster centre, and the torques τ exerted onto the star by different subsystems are all plotted as a function of the distance to the cluster centre, Ycyl,loc. The different colours in panels (a) and (c), paired with their respective line styles represent the contributions of the different subsystems: by stars inside the cluster (red dashed), by stars in between one and two Jacobi radii (dotted green), by stars lost during the violent relaxation phase (dot-dashed black), and by stars in the tidal tails (blue). (a) ΔL as a result of the time integral of the torques in (c) shown in the corresponding colours and line styles. The direct measurement of ΔL of the typical star is also indicated with the thick purple line, as well as the sum of all subsystems’ ΔL with the long-dashed amber line. Note that the long-dashed amber line superimposes the thick purple line. The offset in the z-component of the angular momentum, δLout, with respect to the cluster centre at time of escape corresponds to the zero point of ΔL. It is given in kpc · km s−1. (b) Tangential velocity relative to the cluster centre of our typical star. (c) z-component of the torques, τ, of each of the subsystems, exerted onto our typical star. (c1) Inset of the cluster and its tails in the local cylindrical system at 708 Myr. Colouring is according to the description above. Additionally, the typical star is marked with a pink cross.

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