Open Access

Fig. 7


Similar to Fig. 3, but now showing variants of model m20mix100mH9 in which the Ca mass fraction is progressively increased in the O-rich shell by powers of ten and starting from about 7 × 10−5, the solar metallicity value (the Ca mass fraction profile is shown in the bottom left panel). Notice the dramatic reduction on the [O I]/[Ca II] line ratio as the Ca abundance is increased. Even in the richest Ca model, the Ca mass is still less than 10% of the O mass.

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.