Free Access

Fig. 5

image

p-v diagrams along a cut crossing E1, E2, W2, and W1. Contours correspond to the line intensity of H(41)α (2.1 to 16.6 in steps of 2.1 mJy/beam). Color scale shows the following line intensity ratios (in Tb units): A) C18O 1 → 0/H(41)α; B) CN 1 → 0/N2H+1 → 0; C) CN 1 → 0/[CS] 3 → 2; D) CS 3 → 2/N2H+1 → 0. Horizontal lines correspond to velocities of 100, 270 and 326 km s-1, to facilitate the comparison with Fig. 7. Line ratios have been calculated with the original images degraded to common angular resolution of 3.8 and a velocity resolution of 12 km s-1. The C18O 1 → 0/H(41)α line ratio can be considered as an observational measurement of the gas illumination by UV photons. Note that the CN/N2H+ and CN/CS line ratios increase in the highest UV irradiated regions, i.e., lowest values of the C18O 1 → 0/H(41)α line ratio.

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.