The Ca i 559.19 nm line in the case of the two most extreme offsets described in Sect. 5.2 and in the no-offset case, with their respective best fitting synthetic value (magenta profiles). The magenta horizontal lines represent local continuum, one-σ, and three-σ of the local simulated noise. [Ca/H] is the input value, [Ca/H]best the best fit value for the line.
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