The combination of astrometric and chemical information from Galactic stars has revealed great detail about the structure, dynamics and history of our own Galaxy. In external galaxies, it is impossible to map the distribution of individual stars, but high signal-to-noise integral field spectroscopy data at various wavelengths, together with sophisticated dynamical models, give us the opportunity to gather information on the structure, dynamics and history of these systems.
I will present the Schwarzschild code DYNAMITE (https://dynamics.univie.ac.at/dynamite_docs/index.html), which models galactic dynamics by means of a superposition of stellar orbits. DYNAMITE is equipped to deal with very detailed kinematic measurements, allowing us to better exploit high-quality IFU datasets of nearby galaxies. I will provide a detailed overview of the challenges of such a modelling technique and introduce first applications on observations and simulations. I will also show how DYNAMITE makes it possible to identify families of orbits originating from different dynamical structures within a galaxy, which in some cases challenge the current picture of galaxies obtained from pure stellar light decompositions. Finally, I will anticipate our future plans for DYNAMITE, adding additional tracers (globular clusters, extended gas), and dealing with discrete data.
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