Open Access
Fig. A.4

Column density in the field of G049.99–00.13. The red contours correspond to levels of 1.25, 1.5, 2, 3, and 4 × 1022 cm−2. They are superimposed on the column density map (panel a), the temperature map (panel b), and the 8.0 μm image (panel c).
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.