Same as Fig. 1, but for the NC1333 IRAS4A Class 0 protostellar core. The blue and red contours trace the moment 0 map of the blueshifted (by integrating emission from −30 to 4 km s⁻¹) and redshifted (by integrating emission from 10 to 55.5 km s⁻¹). The thick light blue contours (top right and bottom panels) trace the moment 0 map of the C₂H (by integrating emission from 2.5 to 15.5 km s⁻¹) and SO (by integrating emission from −10 to 19.5 km s⁻¹) molecular emission spectral line. The two crosses are located at the two peaks of the dust continuum map. IRAS4A1 is to the southeast of IRAS4A2. The ALMA 1.3mm dust polarized emission is from Ko et al. (2020). The ALMA CO(J = 2 → 1) bipolar outflow emission is from T.C. Ching 2016.1.01089.S. The SO emission is line from Chuang et al. (2021).