Free Access

Fig. 3.


Map of YSO groups (star symbols) and masers (magenta circles) in heliocentric coordinates. Right panel: zoomed-in view; it should be noted that the Sun is off the left side of both plots. Groups associated with the structure are highlighted in yellow, while others are in black. The spiral-arm centers defined by Reid et al. (2019) are indicated by the gray bands. The red line indicates the major axis of the feature identified here, with its 56° pitch angle illustrated in blue.

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.