Fig. 9.
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Emission-line flux and EW measurements in the stack by EW(Lyα) > 20. Panel a: continuum-subtracted spectrum. The orange line shows the error spectrum (1σ). The blue shaded region are the pixel integrated for the CIV line. Panels b and c: red line is the slinefit fitting for the spectrum. The orange shaded region shows 1σ uncertainty of the stacked spectrum.
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