Moment-8 maps in various molecular tracers of the jet in IRAS 20126+4104. All maps have been rotated by 30° clockwise so that the jet axis lies parallel to the X-axis of the plot. The offset is relative to the phase center of the observations. The ellipse in the bottom left corner indicates the synthesized beam of the ALMA maps. (a) Contour map of the SiO(5–4) line emission overlaid on the image of the H₂ 2.12 μm line obtained by Cesaroni et al. (2013). Contour levels range from 10.4 to 136.4 in steps of 21 mJy/beam. (b) Contour map of the H₂CO (3_0,3–2_0,2) line emission overlaid on the same SiO(5–4) image as in panel a. Contour levels range from 27 to 117 in steps of 15 mJy/beam. (c) Same as panel b but for the contour map of the average emission in the H₂CO (3_2,2–2_2,1) and (3_2,1–2_2,0) lines. Contour levels range from 12 to 111 in steps of 9 mJy/beam. (d) Same as panel b but for the contour map of the CH₃OH (4_−2,3–3_−1,2) E line emission. Contour levels range from 16.2 to 111.2 in steps of 19 mJy/beam.