C/H as a function of N/H. The symbols correspond to results from spectroscopic analysis from Martins et al. (2008); Hunter et al. (2009); Przybilla et al. (2010); Nieva & Simón-Díaz (2011); Firnstein & Przybilla (2012); Bouret et al. (2012). The evolutionary tracks for various masses between 15 and 60 M⊙ are taken from Ekström et al. (2012) (black), Brott et al. (2011a) (red) and Chieffi & Limongi (2013) (magenta).
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.