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astro-ph2005
Morphologies of Ultracompact HII Regions in W49A and Sgr B2: Prevalence of Shells and a Modified Classification Scheme
C. G. De Pree, D. J. Wilner, J. Deblasio +2
We have used Very Large Array (VLA) observations of the massive star forming regions W49A and Sgr B2, obtained with resolutions from 2\farcs0 to 0\farcs04, to classify the morpholo…
astro-ph2003
Broad Recombination Line Objects in W49N on 600 AU Scales
C. G. De Pree, D. J. Wilner, A. J. Mercer +3
High resolution 7 mm observations of the W49N massive star forming region have detected recombination line emission from the individual ultracompact (UC) HII regions on 50 milliarc…