Open Access
Fig. A.1
Download original image
RADEX calculations of the fractional population at the 11,0 level (top panels) and excitation temperatures (bottom panels). The left and right panels correspond to the two different specific column densities of 1 × 1012 cm−2 (km s−1)−1 and 1 × 1013 cm−2 (km s−1)−1, respectively.
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.