Free Access
Fig. 8.
Top: volume density profile of the Milky Way (total disc, Kalberla & Dedes 2008), overlain with the exponential and a log-polynomial fit. Bottom: resulting path length profile.
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.