Fig. 5.
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Orbits of the young stellar groups integrated back in time in a curvilinear coordinate system using a 3D axisymmetric galactic potential. The orbits are colour-coded based on the integration time used in our calculations. The thicker lines roughly indicate the assumed age (∼30−40 Myr) of these young stellar groups given in the literature (see also Sect. 4.4).
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