Outflow Properties and Kinematics in High-mass Star Forming Regions

Outflows are ubiquitous and play a crucial role in the formation of massive stars and clusters. These outflows are generated during the significant accretion phase of protostellar development, making them one of the earliest detectable indicators of star formation. However, the role and effects of outflows in high-mass star formation remain an open question. We have conducted observations of 12CO (J=2-1) using the ALMA-7m array, focusing on a sub-sample of 20 massive protostars from the SOMA survey. Our observations reveal a variety of outflow patterns, including clear bipolar 12CO outflows and multiple outflow orientations, indicating complex outflow dynamics. We have analyzed the orientation, opening angle, and energetics of these outflows to understand their properties better. Additionally, we explore the relationship between outflow characteristics and the evolutionary stages of the protostars, as inferred from SED modeling.