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Fig. 3.
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Preprocessing method for our spectral data. (a) Input spectrum after corrections of redshift. (b) Spectrum after binning into logarithmic scale with dλln = 0.0015. (c) Smoothed spectrum with a window length of 21. The pseudo-continuum is plotted as a dotted line. (d) Spectrum normalized by dividing the continuum in (c).
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