Emission morphologies (moment 0 maps) towards the extended NGC 6334 filament. Top:¹³CO; bottom: ¹²CO. Contours are drawn at 7, 30, and 70 K km s⁻¹ for ¹³CO and at 15, 50, 100, 150, and 200 K km s⁻¹ for ¹²CO. Velocity ranges used for integrating the intensities are given in the bottom right corner of the maps. The dashed red boxes in the top image outline the central filament and the GM24 region. The various regions discussed in the text are labelled in red. The FIR sources I[N], I to V (corresponding to radio sources F to A; see Kraemer & Jackson 1999) are marked with yellow plus signs on the images. In the ¹²CO moment 0 map the OB star positions from Persi & Tapia (2008) are shown as red open dots. A circle is drawn centred at l = 351.317, b = 0.918, the position of the dominant O6.5 star, to match the arc-like emission morphology observed towards the NGC 6334 central filament. The green plus signs indicate the position of ATLASGAL sources in the NGC 6334 extended region (Urquhart et al. 2018b).