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Fig. 1


High-resolution spectra for some representative stars from our sample (from top to bottom): HD 4048 (F8 V), HD 13829 (F8 V), HD 115043 (a G2 V reference star known to be a member of the Ursa Major nucleus), HD 76218 (G5 V), and HD 56168 (K0 V). Some lines used in the abundance analysis are highlighted in the bottom part of the diagram.

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