Fig. 16.
Comparison of our predicted (He/H)⋆ vs. [Fe/H]⋆ relations in galaxies A–C (from top to bottom; light blue points) with the observed data of Morel et al. (2006, black points with error bars) for B-type stars. We also show the value of the typical He abundance in a sample of B-type stars within the solar neighbourhood from Nieva & Przybilla (2012, black star). The yellow star corresponds to the initial He abundance in the Sun (Serenelli & Basu 2010), where we scale the Fe abundances with respect to the solar photospheric abundance of Fe from Grevesse & Sauval (1998).
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.