Yao-Lun Yang

Abstract Most massive stars form in binary systems, which profoundly influence their subsequent evolution. However, how such systems form remains poorly understood, with several competing scenarios proposed, including disk fragmentation, core fragmentation and capture.

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In recent years, complex organic molecules (COMs), first detected in high-mass cores (Sutton et al. 1985; Blake et al. 1986, 1987), have been routinely detected in the gas phase in low-mass protostellar cores, suggesting extensive chemical evolution at the early stage of low-mass star formation (e.g., van Dishoeck et al. 1995; Ceccarelli et al. 2007; Jørgensen et al. 2020; Ceccarelli et al. 2022). These low-mass cores are often called "hot corinos" (Cazaux et al. 2003; Bottinelli et al.