Free Access

Fig. 7


Centroids of NH3 absorption fitted in individual velocity channels (open squares), overlaid on the 1.3 cm continuum map (black image and white contours) imaged with the VLA in A-configuration (Moscadelli & Goddi 2014). Color denotes line-of-sight velocity (color scale on the right-hand side). The sizes of squares scale linearly with the flux density of NH3 absorption. The relative alignment between NH3 and 1.3 cm continuum is accurate to ~30 mas. We note that with a linear resolution of 200 AU, the compact core is resolved in two (northern and southern) components, that are unresolved in our VLA B-array images (Figs. 3 and 4). The southernmost component, separated by ~0.′′4 from the core, is not shown here. We also note that the NH3 absorption distributes between the two peaks of the radio continuum, shows a velocity gradient roughly N–S, and is strongest towards the southern component of the radio continuum.

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.