ATOMS Paper III, massive star-forming regions

One catalogue, referred to as hyper/ultra compact (H/UC)-H II catalogue, includes 91 cores that enshroud H/UC H II regions as characterized by associated compact H40{alpha} emission. A second catalogue, referred to as pure s-cHMC, includes 31 candidate hot molecular cores (HMCs) showing rich spectra (N >= 20 lines) of complex organic molecules (COMs) and not associated with H/UC-H ii regions.

The third catalogue, referred to as pure w-cHMC, includes 51 candidate HMCs with relatively low levels of COM richness and not associated with H/UC-H II regions. These three catalogues of dense cores provide an important foundation for future studies of the early stages of high-mass star formation across the Milky Way. We also find that nearly half of H/UC-H II cores are candidate HMCs.