Fig. 17
Location of BD−22°3467 in the Teff – log g diagram compared with sd(O)B-type stars close to the EHB taken from Edelmann (blue, open squares 2003) and DAO-type WDs taken from Gianninas et al. (red diamonds and green, filled squares 2010, cf. Fig. 15. The post-EHB evolutionary tracks are from Dorman et al. (1993, Y = 0.288 ≈ Y⊙ and labeled with the stellar mass (in M⊙).
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