Fig. 13
Synthetic spectrum with the stellar parameters Teff = 4212 K, log g = 1.8, [M/H] = 0.0 dex, and S/N = 100 at resolution R = 20 000 (top) and R = 5000 (bottom). The black line is the correctly normalized spectrum (synthesized by MOOG and noise added), while the dashed line is the same spectrum after normalization with the task continuum of IRAF.
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