Fig. 6
Examples of profiles of helium lines of three stars. Left: HD 130298; He ii line 5411 Å at JD 2 454 211 (black) and 2 454 627 (gray). Middle: HD 163892 He i line 4922 Å at JD 2 454 956 (black) and 2 456 097 (gray). Right: HD 167263; spectra of JD 2 453 483 (only He i 4922 Å) and 2 454 954 (He i 4922 and He ii line 5411 Å).
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