Fig. 1.
Examples of two pPXF fits in the wavelength range between 4750 and 5500 Å. Top panel: the bin with the highest S/N (S/N = 101). Bottom panel: a bin with S/N = 34. The observed spectrum, the best fit and the residuals of the fit are plotted in black, red and green, respectively. The residuals are arbitrarily shifted for displaying purposes.
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