Correlation between the line width and gravitational potential (left panel), λ_max – λ_min (middle panel), and velocity gradient (right panel) in the G53W region. λ_max – λ_min can characterize the degree of deformation of the gas due to tidal forces. The calculation of λ_max and λ_min is provided in Sect. 7. The Spearman correlation coefficient and p-value are labeled in the bottom-right corner of each panel. Note that each data point corresponds to a single pixel. Native pixels are not independent, due to beam convolution.