[Sr/Ba] vs. [Ba/Fe]. Green symbols represent the First Stars, circles show dwarfs, and squares show giants. The black dots represent our sample of dwarfs (Ba could be measured in only seven stars of the sample). The three Li-poor dwarf stars (with a measured Ba abundance) are circled in red. The dotted line represents the value [Sr/Ba] provided by the r-process alone. CS 31082-001 is a typical r-rich star, and in contrast, HD 122563, is an r-poor star with a relative enrichment of the first peak elements.