Top row: CH⁺ 120 μm compared with H₂v = 1–0 S(1) and [CII] 158 μm. CH⁺ 120 μm contours overlaid on the H₂ map (left) and [CII] map (right). Zoom: map of vibrationally excited H₂ convolved to the spatial resolution of CH⁺J = 3–2 map including contours of CH⁺J = 3–2. Bottom row: OH 84 μm compared with H₂v = 1–0 S(1) and [OI] 145 μm. OH 84 μm contours overlaid on the H₂ map (left) and [OI] map (right). All contours are with contour steps of 20% of the peak emission, except for the zoomed picture where the contours are with contour steps of 10%. The maps are in units of erg s^-1 cm^-2 sr^-1. The H₂v = 1–0 S(1) data taken from Walmsley et al. (2000, big map) and van der Werf et al. (1996, zoomed map). The [CII] 158 μm and [OI] 145 μm data were taken from Bernard-Salas et al. (2012).