Free Access

Fig. 1


O i, OH and OH+N = 1 ← 0 spectra of sightlines in the first quadrant, along with CH and HF J = 1 ← 0 spectra. All five transitions are only available for W31C and W49N. Model fits are overlaid in red. For O i , CH and HF one emission line component was added where needed. For G10.47, the hyperfine splitting is indicated at the 120 km s-1 component (green bars). All spectra are normalized by the continuum level.

This figure is made of several images, please see below:

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.