Fig. 6
Upper panels: comparison between the disentangled spectra obtained for the best-fitting K1 and K2 values, their sum, and observations at two phases close to RV extremes for the N IV λ4058. Lower panel:reduced χ2 as a functionof K1 and K2 for the N IV λ4058 line. The analysis is performed using the X-shooter data. The minimum is at K1 = 129 ± 6 km s−1, K2 = 134 ± 4 km s−1.
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