Fig. 8.
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H2 excitation ladders for selected regions. Top: Nucleus. Middle: Northeast shock. Bottom: South lane. Pure rotational H2 lines are shown in blue, with best-fit models in yellow triangles. Observed rovibrational lines are plotted in red, with zoomed-in insets displayed in the top corners of each panel. The solid line connects the 1–0 S(1–7) rovibrational ladder, while the dashed line connects the 1–0 O(2–9) ladder.
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