SVS13 multiple system as traced by the integrated-intensity map (moment 0, magenta contours) of CS(2–1) (top left), SO(2₃−1₂) (top right), CH₃OH(2_kk−1_kk) (bottom-left), and SiO(2–1) (bottom-right). The methanol emission is due to the lines of the 2_kk−1_kk spectral pattern that is emitted at 96.7 GHz (see Table 1). The maps were obtained by integrating on the velocity ranges [–18.3, +6.1] km s⁻¹(CS), [−106.3, +35.2] km s⁻¹(SO), [−5.9, + 19.8] km s⁻¹(CH₃OH), and [−109.9, +48.9] km s⁻¹(SiO). The first contours and steps are at 3σ (1σ= 16 mJy km s⁻¹ beam ⁻¹ for CS, 20 mJy km s⁻¹ beam ⁻¹ for SO, 12 mJy km s⁻¹ beam ⁻¹ for CH₃OH, and 27 mJy km s⁻¹ beam⁻¹ for SiO). We report the 3 mm continuum image in greyscale (and black contour, 3σ) (Fig. 1). The continuum peaks of the SVS13-A, VLA3, SVS13-B, and SVS13-C protostars are marked by black stars (Table 2). The synthesised beams are shown in the bottom-left corners, and the dashed circles delimitate the FoV of the images (Table 1). The black triangles indicate the positions of the HH8, HH9, HH10, and HH11 Herbig-Haro objects (e.g. Bally et al. 1996). The red and blue arrows in the bottom-right panel indicate the jet direction, as discussed in Sect. 5.3.