Evolution of complex organic molecules in hot molecular cores: Synthetic spectra at (sub-)mm wavebands

摘要: Hot molecular cores (HMCs) are intermediate stages of high-mass star formation and also known for their rich emission line spectra at (sub-)mm wavebands. The observed spectral feature HMCs such as total number lines associated intensities found to vary with evolutionary stages. We developed various 3D models guided by the scenarios proposed recent empirical modeling studies. then investigated spatio-temporal variation temperature abundances in consistently coupling gas-grain chemical evolution radiative transfer calculations. explored effects varying physical conditions on including density distribution luminosity central protostar(s). time-dependent structure hot core provides a realistic framework investigating spatial ice mantle evaporation function timescales. With increasing protostellar luminosity, water font ($\sim$100K) expands gas phase these COMs spreads out. simulated synthetic different timescales compare observations. A qualitative comparison suggests that self-consistent can reproduce notable trends within typical 10$^{5}$ year. These predict maps will expand time. model predictions be compared high resolution observation probe scales few thousand AU forming regions from ALMA.[Abridged]