Comparisons between observed and simulated Lyα spectra. The simulated spectra of the wind models are normalized by setting the same peak height as the spectrum of the previous fit with the shell model. The black dashed line is the observed Lyα spectrum, which is continuum subtracted. The gray dashed line is the simulated Lyα spectrum of the shell model from Iani et al. (2021). In the left and middle panels line colors represent, for σ_Src equal to, respectively, 100 km s⁻¹ and 150 km s⁻¹, θ_o, Wind = 30° (red), 60° (orange), and 75° (blue), with θ_LOS fixed to 0°. In the right panel, θ_o, Wind is fixed to 60°, and line colors represent θ_LOS = 0° (orange), 40° (blue), and 90° (green).