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Fig. 7
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Evolution of the luminosity in the [O I] 6300, 6364 Å lines normalised with the 56Ni decay luminosity for SN 2020acat (black crosses) and the JEKYLL models with strong expansion and medium mixing of the radioactive material and initial masses of 13 M⊙ (red), 15 M⊙ (cyan), 17 M⊙ (green), 19 M⊙ (yellow), and 21 M⊙ (blue).
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