Free Access
Fig. 1

Integrated line intensities for all stars in the sample. 12CO: black open circles; 13CO red filled circles; HO: open squares; H
O: red filled squares; H
O: green filled squares; SiO: stars; SO: open triangles; SO2: × ; HCN: filled triangles.
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.