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Fig. 4


Channel map of the isolated component of the N2H+(1−0) line. The velocities are shifted by the separation of the hyperfine structure line of 8 km s-1 to the vlsr. Velocities for each channel are given in the top-right of each panel. The contours in each panel are from 5 to 95% of the respective peak emission in that channel. Negative features at the same contour levels are shown in dashed lines. A linear scale bar is presented in the top-left panel. The line is meant to guide the eye and is drawn along the main filamentary structure visible in the channel at 47.2 km s-1.

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