Broad emission features formed in the stellar wind.
The lines of He , C and O are broadened due to the global motion of the expanding stellar wind. Na I absorption features. The mean was calculated based on all 22 nights of data. The segment in the lower right corner of the upper panel indicates the amplitude for 1.0 continuum unit in the residuals. The mean profile in the bottom panel refers to the global mean profile from all 22 nights for this star.