Radial velocities as a function of time obtained by measuring the Doppler shift of Fe i λ5500 Å Ei = 1 eV (blue), 3 eV (red), 5 eV (green) line cores using parabolic fits. Four different line strengths are shown whose EWs are ordered according to their oscillator strength log gf1 > log gf2 > log gf3 > log gf4. The velocity curves are shifted by 40 km s-1 relative to each other for clarity.
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