Paper:	BIMA Observations of Hot Molecular Cores
Volume:	267, Hot Star Workshop III: the Earliest Stages of Massive Star Birth
Page:	43
Authors:	Wyrowski, F.; Gibb, A. G.; Mundy, L. G.
Abstract:	Detailed studies of high-mass star formation require the highest angular resolving power of interferometers to resolve hot molecular cores and the environs of young, massive (proto) stars. We present BIMA 1.3mm observations with subarcsecond resolution of the bright dust and molecular line emission from hot cores associated with ultracompact HII regions. Density power laws can reproduce the observed continuum emission but break down on scales smaller than 2000~AU. Outflows provide evidence for embedded exciting sources and the observed morphology of molecular lines is consistent with internal heating of the cores. Recent 3mm BIMA observations toward candidates of even younger stages of massive star formation are presented, selected by their IRAS colors, submm emission in the environs of UC HII regions, or by their mid-IR absorption.

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