Fig. 6

Velocity channel maps of the C18O (2–1) emission at the medium and low velocities generated from the combined data obtained with the IRAM 30m, ACA, and ALMA observations. Contour levels are from 3σ and increase in steps of a factor of two, where 1σ is 5.5 mJy Beam−1. The central velocity of each channel is labeled at the upper left corner in each panel in units of km s−1. Crosses denote the position of HL Tau. Blue filled ellipses present the size of the synthetized beam.
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.