Distribution of the derived τ(JF1 F) = (123 − 012) opacities as function of the estimated total N2 H+ column density in the ISF. The plot represents the kernel density estimates of >25 000 individual components extracted from our ALMA observations. The last contour encloses 95% of the components fitted in our spectra. For comparison, we overplot the different RADEX predictions for an isothermal gas at kinetic temperatures of 10 K (red), 20 K (green), and 30 K (blue) at densities n(H2) between 105 cm−3 (dashed lines) and 108 cm−3 (solid lines), all calculated assuming a constant linewidth of Δ V = 0.7 km s−1.
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.