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Fig. 3

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Differences between four selected ELODIE spectra (indexed by the stellar parameters shown in each panel) and the ELODIE spectral collection. The panels show an approximation to the expected degeneracies in the mapping between spectra and physical parameters. The colour code represents the area of the (absolute value of the) difference between two pairs of spectra, where each spectrum has been normalised to area 1, as described in the text.

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