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Fig. 4

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Zoomed in velocity-integrated intensity ratios HCN(4–3)/HCN(1–0), HCO+(4–3)/HCO+(1–0) and CS(7–6)/CS(2–1) in the CND. The filled ellipses represent the spatial resolutions used to derive the line ratio maps: 2′′ × 0.8′′, PA = 19° for HCN(4–3)/HCN(1–0) and HCO+(4–3)/HCO+(1–0); 6.6′′ × 3.2′′ PA = 16° for CS(7–6)/CS(2–1).

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