Hunting Complex Organic Molecules at the Onset of Star Formation in the Orion Molecular Cloud 

Shih-Ying Hsu  (ASIAA)

The study of complex organic molecules (COMs) in star-forming regions is crucial for understanding the origins and prevalence of life in the universe. This presentation shares findings from a COM survey within the "ALMA Survey of Orion PGCCs (ALMASOP)" project, focusing on Class 0/I protostellar cores in the Orion molecular cloud complex. We detected a total of 11 hot corinos, with the relative abundances of various COMs to methanol aligning with literature reports. To uncover the underlying physical properties and origin of hot corinos, we applied spectral energy distribution (SED) modeling to our sample. The analysis establishes a correlation between the detectability of hot corinos and the mass of the warm envelope in the protostar, suggesting that hot corinos are a common feature of Class 0/I protostellar cores. Our findings advance our understanding of the chemical composition and physical processes involved in the early stages of star formation and provide observational support for the prevalence of hot corinos in protostellar systems.