Moment maps of H₂CO towards DG Tau. Left panel: H₂CO moment 0 map. The color scale indicates the line intensity integrated over the H₂CO velocity profile (V_LSR = ( + 3.24, +9.24) km s⁻¹) in Jy beam⁻¹ km s⁻¹. The magenta contours indicate the 1.3 mm dust continuum emission (from 3σ with steps of 10σ). The blue and magenta ellipse in the bottom left and right corner indicate the synthesized beam for H₂CO and the continuum, respectively. Right panel: H₂CO moment 1 map. The color scale indicates the velocity V_LSR in km s⁻¹.