In a Milky Way-like galaxy simulation, attenuation curves flatten then steepen over time, and the 2175 Å bump strengthens on a ~250 Myr timescale as small carbonaceous grains form, modulated by scattering and viewing angle.
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Evolution of galaxy attenuation curves driven by evolving dust mass and grain size distributions
In a Milky Way-like galaxy simulation, attenuation curves flatten then steepen over time, and the 2175 Å bump strengthens on a ~250 Myr timescale as small carbonaceous grains form, modulated by scattering and viewing angle.