Free Access

Fig. 8


Heavy-element abundance pattern of HE 22524225 (filled rhombi) compared with the average element abundances (open triangles) of the four benchmark r-II stars, CS 22892-052, CS 31082-001, HE 1523-0901, and HE 1219-0312. An upper limit for the Pb abundance of HE 22524225 is indicated by downward-facing triangle. For the r-II stars, the error bars show the dispersion in the single star measurements around the mean, when the species was measured in more than one star. Otherwise it was adopted as 0.1 dex. For comparison, the SSr abundance patterns calculated using the s-process predictions of Arlandini et al. (1999; dotted curve) and Bisterzo et al. (2014; continuous curve) are shown. They and also the heavy-element abundances of the r-II stars have been scaled to match Eu–Tm in HE 22524225. The bottom panel displays the difference between HE 22524225 and the r-II stars defined as .

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.