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Fig. C.2

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Hα line profiles of six stars of the sample normalized to the continuum. The spectra have been obtained either in 2004 with FLAMES/Giraffe by Sacco et al., with a spectral resolution R = 17000, or by Rigliaco et al., in 2009 with SARG, with a spectral resolution R = 29000, as indicated in Table C.1.

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