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Fig. 8


One of the Galactic orbits and its orbital parameters evolutions calculated in the MW2 model including bar and spiral arms – upper left plot shows the orbit in the Galactic plane; upper right plot shows the time-evolution of the vertical amplitude; the bottom row shows evolutions of eccentricity, and peri- and apo-galacticon in the left and right plot, respectively. For one of its revolutions, this orbit fits the 3σ intervals for peri-galacticon, apo-galacticon, and vertical amplitude of the NGC 6791 orbit, these moments are marked with circle symbols in plots on the right.

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