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Fig. 9.


Abundance ratios for α-elements as a function of [Fe/H] for Sculptor and the Milky Way. Symbols and Sculptor references are the same as in Fig. 8. Milky Way: Fulbright (2000) (Si); Carretta et al. (2000) (O); Nissen et al. (2002) (O); Reddy et al. (2003, 2006) (Si); Cayrel et al. (2004) (O, Mg, Si, Ca, Ti); Venn et al. (2004) compilation (Mg, Ca, Ti); Bensby et al. (2005) (O, Si); García Pérez et al. (2006) (O); Ramírez et al. (2007) (O); Nissen & Schuster (2010) (O, Si, Ca, Ti). Only O abundances derived from the [O I] line were included.

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