[Ba/Fe] vs. [Eu/Fe] in carbon-normal and carbon-rich metal-poor stars (blue dots and red crosses, respectively). Stars enriched in s-elements occupy the region above the horizontal and diagonal solid black lines, corresponding to zones A and B of the plot. According to our adopted definitions, CEMP-r/s stars are in zone B. In zone C there are stars with [Ba/Fe] > 1, [Eu/Fe] > 1, and [Ba/Eu] < 0. CEMP-r stars and carbon-normal stars with [Eu /Fe] > 1 and [Ba/Fe] ≤ 1 are in zone D. The dashed-blue and solid-magenta lines are linear fits of the carbon-normal stars and CEMP-s stars, respectively. The red and blue distributions represent the results of our theoretical model for CEMP and carbon-normal metal-poor stars.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.