Fig. 6
Results from multi-transition excitation analysis of circumstellar line emission towards a large sample of AGB stars with varying physical and chemical properties. Left – HCN fractional abundance, f0(HCN), as a function of a density measure (Ṁ/υe) for carbon stars (filled circles), M-type AGB stars (filled squares) and S-type AGB stars (filled triangles). Middle – SiO fractional abundance, f0(SiO), as a function of a density measure (Ṁ/υe) for carbon stars (filled circles; Schöier et al. 2006b), M-type AGB stars (filled squares; González Delgado et al. 2003) and S-type AGB stars (filled triangles; Ramstedt et al. 2009). Right – SiS fractional abundance, f0(SiS), as a function of a density measure for carbon stars (filled circles) and M-type AGB stars (filled squares) from Schöier et al. (2007a).
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.