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Fig. 7

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Chemical abundances [X/Fe] as a function of [Fe/H] for different Sgr samples. The FLAMES targets analyzed in this work are represented as blue circles. Different literature samples, represented by distinct colors and markers, provide additional [X/Fe] data. These include the APOGEE dataset for the Sgr main body from Hayes et al. (2020), and optical data for the Sgr core from Monaco et al. (2005), Sbordone et al. (2007), Carretta et al. (2010), and Mucciarelli et al. (2017), with the most metal-poor stars reported by Hansen et al. (2018) and Sestito et al. (2024b). The studies by Smecker-Hane & McWilliam (2002) and McWilliam et al. (2013) contain data for both the nuclear cluster M54 and the main body of the galaxy.

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