ALMA image (gray) at 3 mm (Ohashi et al. 2016) of G14.2-hub-S overlaid on the NH₃ (1,1) integrated intensity (black dashed contours) from Busquet et al. (2013). The top panel corresponds to the gray rectangle marked in Fig. 1 while the bottom panel shows a close-up of the central region around G14.2-hub-N. In both panels contour levels of the grayscale image start at 3σ and increase in steps of 6σ, where σ is the RMS of the map (0.2 mJy beam⁻¹). Red dots depict the dust continuum sources detected with ALMA at 1.3 mm (Zhang et al., priv. comm.). The synthesized beam is shown in the bottom left corner of both images. Symbols are the same as in Fig. 1.