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Fig. 4.

image

Phase-space of circularity λz as a function of cylindrical radius R for the best-fit model of FCC 153. The colour represents the orbital weight from the Schwarzschild model, which has been normalised to an integral of unity. The dynamical decomposition is overlaid in black, where only those components which have non-zero contribution to the original model are defined. The figure is shown on the radial extent of the spectroscopy for clarity, but the decomposition is conducted over the full Schwarzschild model. The black dashed line is the half-mass radius, derived from MGE, shown for scale. The distribution indicates the prevalence of high-angular-momentum (cold disk-like) co-rotating orbits in this galaxy, with very little contribution from hot (λz ∼ 0) or counter-rotating (λz < 0) orbits.

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