870 μm emission (blue contours) superimposed on the 8 μm emission (gray). The two regions are as also shown in the two white dashed boxes in Fig. 6. The blue contour levels start from 3σ (0.15 Jy beam⁻¹) and rise in steps of 2σ. The green ellipses represent the 870 μm cores. The red stars mark the positions of the MSX6C G016.9270+00.9599 and MSX6C G016.9261+00.2854 H II regions (Urquhart et al. 2011). The red squares indicate IRAS sources, while the red triangle shows the water maser (Braz & Epchtein 1983). The ATLASGAL beam (19′′) is shown as the green filled circle in the bottom right-hand corner.