Fig. 4
Zoom on the trends observed during the intense monitoring of the Mons campaign for the EWs and V/R ratio of the Hα line in the spectrum of HD 60 848. Typical uncertainties are 0.25 Å for the EW and 0.01 for the V/R ratio. The insets in the top panel illustrate the first (18 December 2009, left inset) and last (14 March 2010, right inset) normalized spectra around the Hα line as observed during the Mons campaign.
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