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Detection of Persistent Helium Absorption in the 91bg-like Type Ia Supernova 2022an

Authors: Ping Chen, Avishay Gal-Yam, Subo Dong, Renyue Cen, Boaz Katz, Kate Maguire, Steve Schulze, Jesper Sollerman, Joseph P Anderson, Ting-Wan Chen, L. Galbany, Mariusz Gromadzki, Chang Liu, Adam A. Miller, Tomás E. Müller-Bravo, Tanja Petrushevska, Giuliano Pignata

Ping Chen et al 2026 The Astrophysical Journal Letters 1004 .

Provider: AAS Journals

Caption: Figure 8.

Spectra of SN 2022an compared with the SCH2p0 model spectra of S. Blondin et al. (2018) at similar phases. The model spectra have been scaled to match the integrated flux over the wavelength range 4000–8000 Å.

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