Fig. 3

Neutron capture elements: Gray circles represent literature data for field stars from Roederer et al. (2014). Blue triangles are literature data for dwarf spheroidal galaxies gathered in Frebel (2010, see details in Fig. 2). Red circles represent the results for our sample of UfDSph stars. Red triangles represent upper limits for stars of our sample.
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.