Stellar distribution. From the left [Ba/Fe], [Sr/Fe] and [Sr/Ba] vs. [Fe/H] in the halo; the density plot is the distribution of simulated long-living stars for our models, see bar below the main figure for the color scale; superimposed, we show the abundances ratios for halo stars (data from Frebel 2010; Aoki et al. 2013a). The symbols for the Frebel (2010) data are black dots for normal stars, cyan dots for CEMP-no, a red x marker for the CEMP-r star, and black open circle for stars without carbon measurement; for the Aoki et al. (2013a) data we adopt the same symbols, but instead of dots we used squares.