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Fig. 1
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HET/LSR2 spectrum (blue line) of the PG1159 central star of Abell 25. Overplotted (red line) is our best-fit model with Teff = 140 000 K, log 𝑔 = 6.8, and abundances of He = 0.46, C = 0.46, and O = 0.08.
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