Comparison of the intensities of the C30α, 158μm-[CII] (Pabst et al. 2019), and ¹²CO(2–1) (Berné et al. 2014) lines. The thin dashed blue line shows the C30α line profile, the blue dash-dotted line for the C65α line, the red solid line for the 158μm-[CII] line, and the green dotted line for the ¹²CO(2–1) line. The slice from where the velocity integrated brightness profiles was extracted is shown in Fig. 10. The position of Θ¹ Ori C marks the origin of the distance scale.