e-MERLIN observations of H₂CO 4.83 GHz emission toward the nuclear region of Zw049.057. (a) moment 0 map of the emission, overlaid with e-MERLIN C Band continuum emission contour map. (b) moment 1 map of the emission. Directions of the CO outflow (PA_CO = 105°), and disk major axis (PA_maj = 30°) are indicated by the dashed black line, solid black line, and solid green line, respectively. Figure is a zoom-in of Fig. (1b) and (1c).