Free Access

Fig. 2

image

Moment 0 integrated maps zoomed around the IRAS4A protostellar system of the transitions from SiO, OCS, SO, and SO2 observed at high (~1′′) angular resolution integrated over the (−10, +7) km s−1 (blue) and (+7, 30) km s−1 (red) ranges.Contour levels increase in steps of 3σ, the σ noise levels of each map are listed in Table 1. Transition frequency (in GHz) is given at the top right of each panel. Black crosses represent the position of the 4A1 and 4A2 sources of the IRAS4A binary system. Green crosses represent the position of the SiO(5–4) and the blue OCS emission peaks along the outflows.

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.