Fig. 2
The Fe viii λ 1148.22 Å line in PG 1159 stars and other objects. Left panel, from top: three PG 1159 stars, two PG 1159-hybrids, and a [WC]–PG 1159 transition object. Right panel: two hot DOs and four H-rich central stars. Depicted numbers denote temperature and gravity of the overplotted (red) models. They have solar iron abundance except for the two DOs where Fe is ten times solar.
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