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Fig. 1


Comparison of our synthetic spectra (full, blue line: , log g = 5.51; dashed, red: , log g = 5.46; He = 0.0027 by mass) around He I λ   4471 Å and Mg II λ   4481 Å (left) and He II λ   4686 Å (right) with the observation. The models are convolved with a rotational profile corresponding to vrot = 30 km s-1. Models and observation are smoothed with a Gaussian (0.1 Å FWHM) for clarity.

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