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Fig. A.1.
Sliding periodograms computed with a time window of 600 days. From left to right and from top to bottom: Ca II, Hα, Hβ, Hγ, Hδ, Hϵ, He I, and Na I. The X-axis shows the median time over which the GLS periodograms are calculated. Vertical white strips corresponds to gaps in the data.
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