Velocity distribution in the cloud. C¹⁸O integrated intensity contours over plotted on the Herschel map (gray color). Contours are shown for the three velocity components detailed in the text (left). Cyan: 5.95–6.25 km s⁻¹ (with intensity levels as follows: dotted is 0.4 K, dashed is 0.5 K and solid line is 1 K), pink: 6.25–7 km s⁻¹ (with dotted as 1 K, dashed is 1.5 K and solid line is 2.4 K), red: 7–7.6 km s⁻¹ (with dotted as 1 K, dashed as 1.5 K and solid line as 2 K). Velocity (first-moment) map (right). The dark blue cross shows the position of the continuum peak.