Fig. 2
Top panel: portion of the HARPS-N co-added spectrum of K2-36 containing the LiI line at 6707.8 Å, compared to four different syntheses (lines of various colours and styles), each differing only for the assumed lithium abundance. Bottom panel: zoom-in view of the region around 6707.8 Å to enable easier comparison between the observed data and model spectra for low Li abundances.
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