Outflow and Infall in a Sample of Massive Star Forming Regions. II. Large-Scale Kinematics

We present maps of seven sources selected from our previous paper in SiO (J = 8–7) and HCO+ and H13CO+ (J = 4–3), which were obtained using HARP-B on the James Clerk Maxwell Telescope. We find that four out of our seven sources have infall signatures based on their HCO+ emission profiles. From our maps, we have determined the extent of both the outflowing and infalling regions toward these sources, and constrained the amount of infalling and …