LBQS 0302−0019 host galaxy disk kinematic best fit of Moment 0, 1, and 2 (first to third rows). These best fits are inferred from the analysis of the narrow [O III] component obtained from our multi-component Gaussian fit (i.e. all components with FWHM < 600 km s⁻¹ in Fig. 9). The black and green lines identify the major axis and the zero-velocity curve, respectively; the red cross identifies the QSO position.