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Fig. 4


Left panels: [Fe/H] and log (g) for all foreground stars drawn from the Besançon model towards the direction of the dwarf spheroidal galaxies Sextans (top row), Sculptor (middle row), and Fornax (bottom row). Contours are shown on a 25 by 25 grid. The rest of the panels show the distribution of foreground stars left after applying a velocity criterion of 3σ around the systemic velocity of the galaxy, a line criterion as described in the text on the basis of the EWs of the CaT and Mg I lines, and both criteria combined. Percentage levels are the same in all panels and always relative to the total number of foreground stars towards that galaxy.

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