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The structural parameters of a galaxy can be used to gain insight into itsformation and evolution history. In this paper, we strive to compare the MilkyWay's structural parameters to other, primarily edge-on, spiral galaxies inorder to determine how our Galaxy measures up to the Local Universe. For ourcomparison, we use the galaxy structural parameters gathered from a variety ofliterature sources in the optical and near-infrared wavebands. We compare thescale length, scale height, and disk flatness for both the thin and thickdisks, the thick-to-thin disk mass ratio, the bulge-to-total luminosity ratio,and the mean pitch angle of the Milky Way's spiral arms to those in othergalaxies. We conclude that many of the Milky Way's structural parameters arelargely ordinary and typical of spiral galaxies in the Local Universe, thoughthe Galaxy's thick disk appears to be appreciably thinner and less extendedthan expected from zoom-in cosmological simulations of Milky Way-mass galaxieswith a significant contribution of galaxy mergers involving satellite galaxies.

Comparing the structural parameters of the Milky Way to other spiral galaxies