Small-scale emission. Top: Moment 0 maps of SO₂ above 3σ (color scale) and continuum emission (dashed contours). The moment 0 maps were integrated over 60 km s⁻¹ and the continuum contours start at 20σ and follow steps of 80σ. The E_up value of each transition is indicated in the top left corner of each panel and the synthesized beam is shown by the black filled ellipse in the bottom right corner of the first panel. The color scale is the same for the six panels. Bottom: Moment 1 maps of SO₂ above 3σ (color scale) and selected values of their respective moment 0 maps (dashed contours). The contours start at 3σ and follow steps of 7σ, with the exception of the last two panels, which follow steps of 3σ. The Ay value of each transition is indicated in the top left corner of each panel; the color scale is the same for the six panels. The adopted systemic velocity is 3.7 km s⁻¹.