The nature and role of jets and outflows in the formation of high-mass stars is still poorly understood. Our research group has approached the study of these phenomena through a variety of projects in the past 4 years (NSF grants AST-1814011 and AST-1814063). We have carried out several complementary studies to the Rosero et al. (2016, 2019) survey to characterize jets and outflows from massive young stellar objects (MYSOs). In particular: 1) We searched for SiO(1-0) molecular jets toward a sub-sample of jet candidates from the survey (Rodríguez et al. submitted). 2) We developed a method to search for spectral line emission in broadband (continuum) observations and successfully detected NH3 and CH3OH emission in the survey data (Sanchez-Tovar et al. submitted). 3) We observed all jet candidates from the survey with the VLA-A at 22 GHz to confirm their jet nature (Rodríguez et al., in prep.). 4) We carried out a high-sensitivity survey for molecular lines at C-Band frequencies, including CH3OH and excited OH transitions (Tan et al. 2020). Additionally, 5) we detected OH blueshifted absorption lines that are consistent with tracing the remnants of a collimated molecular outflow amidst the development of an ultra-compact H II region (Tan et al. in prep.); and 6) we discovered a spectacular highly collimated CO(2-1) outflow from an extremely young MYSO, characterized the nature of the source and studied the dynamics of the system (Rodríguez et al., 2021). Our multi-scale approach at different evolutionary stages allows us to investigate the mass accretion/mass ejection connection through different techniques, thus giving us a comprehensive view of the birth of high-mass stars. In this poster, we present our results and discuss the implications of our findings for the study of high-mass star formation.
[Poster PDF File]