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Fig. 2


N2H+(1–0) (black) and HC5N(36–35) (gray) spectra averaged over pixels where the emission was detected above 5 σ. The red curve shows a two-component Gaussian fit to the HC5N line profile. The blue circles indicate the peak velocity positions of each N2H+(1–0) HFS component expected from the HC5N(36–35) systemic velocity of −2.6 km s−1. The vertical dashed lines mark the peaks of the two HC5N velocity components.

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