Free Access
Fig. 7
[Ca/Fe] vs. [Fe/H] in our sample of EMP stars. Symbols as in Fig. 5. Turnoff and giant stars agrees quite well, [Ca/Fe] is constant in the range −4.3 < [Fe / H] < −2.5 and the mean value is equal to [Ca/Fe] = 0.5, a value slightly higher than the LTE value [Ca/Fe] = 0.35 (see Bonifacio et al. 2009).
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.