Fig. B.2
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Extraction of a new systematic on HARPS by stacking in the terrestrial rest-frame the residuals spectra time-series YARARA-corrected of HD20794. The interference pattern present a periodicity of 0.1 A and a peak-to-peak amplitude of 0.1% in flux units (magnified here by 100 to be visible). We displayed as a comparison the master spectrum of HD20794.
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