Star formation in two clumps located at the waist of G004.40+00.11. The stellar content of the clumps is shown by 4.5 μm (panel a), 8.0 μm (panel b), and 70 μm (panel c) images. The over-plotted red contours are of column density (levels of 1.5, 1.0, 0.75, 0.5, 0.25 × 10²³ cm⁻²) and the green contours are of 70 μm emission (levels of 20 000, 15 000, 10 000 MJy sr⁻¹). Panel d: composite colour image with 70 μm emission in red, an unsharp image of the 8.0 μm emission highlighting the bright rim bordering clump C2 in green, and 4.5 μm emission in blue. The orange arrows point to the two YSOs emitting at 70 μm. The green contours are of 70 μm emission.