[α/Fe] versus [Fe/H] predicted by the accreted dwarf satellite presented in Section 3.2. The colour-coding stands for the galactic ages at different evolutionary phases. With the empty circle, the chemical abundance ratio at an age of 12.5 Gyr is reported. With light blue points, we have labelled Enceladus stars, as was suggested by Helmi et al. (2018). On the sides of each panel, the observed (light blue shaded area) and predicted (dark grey shaded area) normalised KDEs of the abundance ratio distributions calculated with a Gaussian kernel are also reported.