Montage of spectra in the [O I] λλ 6300, 6364 region (top), the Hα region (middle), and the [Ca II] λλ 7291, 7323 region (bottom) for the s9 and the s15p2 models of S16. A thin vertical line indicates the rest wavelength of each component of the doublet linesand Hα. Colored lines indicate the flux arising exclusively from bound-bound transitions associated with a specific ion (other ions and their opacity are then neglected, which explains the flux difference and the excess flux in places). Notice the presence of [Ni II] 7377.8 and [Ni II] 7411.6 Å in the bottom panels.
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