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Fig. 1
Balmer lines Hα (bottom), Hβ (middle), Hγ (top) from a typical ESPaDOnS spectrum of 40 Eri B. The continua for all lines are normalised to 1.0 in the far wings. The upper two spectra have been shifted upward for clarity by 0.2 (Hβ) and 0.3 (Hγ). The unique shape of the core of Hα is clear from this figure.
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