Fig. 16.
Top panel: Ca II K line of HD 80007 for the selected days, observed with FEROS. Spectra were shifted 0.01 units in the Y-axis aimed at facilitating the visualisation of the variability. The central absorption is seen at ∼2 km s−1 as well as blue- and red-shifted variable absorptions. Bottom panel: Na I D2 line of HD 80007 for the selected days. Variability is seen at ∼–10 and ∼2 km s−1. The slight shift at the bottom of the narrow absorptions, which is presumably produced by a companion, is noticeable in both panels.
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