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Fig. 21


Temperature structures (, log g = 7.60) of a pure H model (thin, black), our final homogeneous model (thick, red), and a diffusion model (dashed, blue). The formation depths of the line cores of the lowest members of the H i Lyman and Balmer series, the C iv, N v, O vi, Si iv, and S vi resonance doublets, and our strategic O ivλλ   1338.634,1343.022,1343.526  Å and O vλ   1371.296  Å lines are marked.

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