Fig. 2
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Physical parameters produced by the parametric shock model, assuming a 20 km s−1 shock speed, initial gas density nH = 2 × 104 cm−3, and a grain size a = 0.1 μm. The difference between the speeds of the neutral gas and the dust grains is important in determining the rate of ice sputtering in the chemical model. The shock treatment is based on the methods of Jiménez-Serra et al. (2008) and Miura et al. (2017).
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