G17 zeroth moment maps (contours) overlaid on the dust continuum (grayscale). Left: the black contours show the H₂CO (2) transition (E_up = 68.1 K) from 5σ to a peak of 0.175 Jy beam⁻¹ km s⁻¹ (contour levels 0.021, 0.052, 0.083, 0.113, and 0.144 Jy beam⁻¹ km s⁻¹). The red contours show NH₂CHO (1) emission ((E_up = 60.8 K) from 5σ to 0.268 Jy beam⁻¹ km s⁻¹ (contour levels 0.022, 0.071, 0.120, 0.170, and 0.219 Jy beam⁻¹ km s⁻¹). Right: the blue contours show the extent of the HNCO (2) emission (E_up = 101.5 K) from 5σ to 0.146 Jy beam⁻¹ km s⁻¹ (contour levels 0.010, 0.037, 0.064, 0.092, and 0.119 Jy beam⁻¹ km s⁻¹) with the red contours showing NH₂CHO (as in the left frame).