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Fig. 6.


Distributions of the best-fit parameters in the halo (blue) and core (orange) components (top) and their ratio or difference (bottom). The median values are indicated by the vertical solid lines. The typical errors (median values) are indicated by the horizontal solid lines in each panel. Left: distributions of the FWHM parameters. The median values for the core, halo and ratio are 147 km s−1, 252 km s−1 and 1.16, respectively. Middle: distributions of peak positions in the core and halo component relative to the peak of the total Lyα line (top) and halo/core peak separation (bottom). The median values are −36 km s−1, −6 km s−1 and +17 km s−1, respectively. Right: distributions of the asymmetry parameters. The median values for the core, halo and ratio are 0.30, 0.18, and 0.5, respectively. For visibility, the object (#7159) with halo/core FWHM ratio of 8.2 and aasym ratio of −19.2 is not shown here.

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