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Fig. 6

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X-shooter spectra of NLTT 1675 compared to the best fit model. The wavelength scale is centred on the values indicated on the right. The top two spectra show the weak Al i lines, followed by spectra showing Mg i lines around 3838 Å and 3832 Å and Fe i lines around 3740 Å and 3720 Å. Finally, the bottom three spectra show the Ca i and Ca ii lines.

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