Spectral evolution of the first (blue; Wise et al. 2023) and second peak of SN 2023aew. Different instruments are color-coded, and epochs refer to the second peak. Telluric absorption lines (⊕) are marked with solid light gray lines. Dash-dotted lines are at zero velocity (of the stronger line in case of a close doublet); long dashes at −2500 km s⁻¹; short dashes at −6500 km s⁻¹; and dotted lines at −8500 km s⁻¹. When Savitzky–Golay smoothing has been applied, the original spectrum is plotted in gray.