Relation between the narrow linewidths and broad linewidths of spectra of NH₂D cores residing in clumps MM2, MM3, and C (left). The gray dashed line indicates equal linewidths. NH₂D cores that reside along the main filament of SiO emission are marked in red, and others in black. The shaded region indicates the thermal linewidths based on T_rot map derived by CH₃CCH lines (Sect. 3.2). Comparison between column density of NH₂D of the narrow linewidth and broad linewidth components (right). The gray dashed line indicates equal column density.