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Fig. 11


Same as Fig. 8, but for the spectral regions centered on He I 5875 Å (left) and He I 10 830 Å (right). He I 5875 Å is absent in the total emergent spectrum, and at best weak at late times in the He I-only spectrum. The only weak feature we predict is Na i D. He I 10830 Å is present at all times, is strong, and largely unaffected by the metal-rich ejecta (in either emission or absorption).

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