Expanded view of the l-V maps in Fig. 4 consisting of [C ii] contours (red) and the CO(4–3) grey-scale image covering l = −0.̊7 to 0.̊0 and V_LSR = −130 km s^-1 to −40 km s^-1. The [C ii] coutours are T_mb = 1, 2, 3, 4, 5, and 6 K, and the CO(4–3) T_mb values are shown in the color bar on the right. We have superimposed the centroid velocities of the dense cores presented in Fig. 2b from the paper by Henshaw et al. (2016a). (The vertical dashed lines are in the original figure from Henshaw et al. 2016a and identify the correspondence between the gas condensations and the extremes in velocity field amplitude.) It can be seen that the l-V trends of [C ii] and CO(4–3) correlate well with those of the dense cores traced by N₂H⁺.