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Fig. A.1.
Same as Fig. 2. For HD 29578 the small peak at 2 d−1 is real, but of unknown origin; the magnetic measurements show a rotation period > 5 yr for this star, so a period of half a day is not plausible as its rotation period. HD 12932 and HD 19918 are well-known roAp stars (see, e.g., Cunha et al. 2019; Balona et al. 2019).
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