Schematic representation of the spherically symmetric model for the molecular components of Arp 299A showing approximate spatial scales. Most of the molecular absorption is formed in the outer layers of the dense, most compact Cinner component while the H2O emission in the submillimeter seems to originate in the more optically thin Couter component. A tentative inflowing Cextended component is included to account for the redshifted ground state OH doublet at 119μm.
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