Fig. 1
Departure coefficients for selected levels of Mg i as a function of log τ5000 in the model atmosphere 4600/1.60/−2.56 from the calculations with pure electronic collisions (top panel) and with H i collisions taken into account following BBSGF (bottom panel). Tick marks indicate the locations of line center optical depth unity for the Mg i lines 5172 Å (1) and 5528 Å (2).
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.