Fig. 7.
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Spectra of SN 2023xqm were obtained at t ≈ −13, −6, +0, and +18 d relative to the B-band maximum light. These spectra were compared with the corresponding phase spectra of other supernovae, including SN 2011fe (Zhang et al. 2016), SN 2017hpa (Zeng et al. 2021b), SN 2021hpr (Zhang et al. 2022), and SN 2005cf (Wang et al. 2009b).
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