SN 2023xwi: forbidden line emission in the peak spectrum of a Ca-strong transient. - Touchard-Paxton, C -G; Frohmaier, C; Pursiainen, M; Sullivan, M; Polin, A; Dimitriadis, G; Galbany, L; Killestein, T L; Kumar, A; Lyman, J (Monthly Notices of the Royal Astronomical Society, 2025)