Open Access

Fig. 4.


Download original image

Abundances in number fraction respect to iron (and to the solar abundances). The prediction of our model is shown by the red line, while the points are the observations for 5 of the iHe-sdOB taken from Dorsch et al. (2019, 2020, 2021). Different symbols correspond to different stars as indicated in the plot. The black symbols correspond to the abundances of EC 22536−5304. Upper limits are marked by horizontal lines with arrows pointing down. Solar values are taken from Asplund 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.