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arxiv: astro-ph/0111351 · v2 · submitted 2001-11-17 · 🌌 astro-ph

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Ultracompact HII Regions

Stan Kurtz , Jose Franco (Instituto de Astronomia , UNAM , Mexico)
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classification 🌌 astro-ph
keywords regionsultracompactrecentadditionanalysisattemptsclasscontinuum
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We review some recent observational results on the properties of ultracompact HII regions, in particular the presence of extended continuum emission surrounding ultracompact sources and the discovery of a new class of so-called ``Hypercompact'' HII regions. In addition, we discuss recent attempts to probe the density structure within UC HII regions using the technique of spectral index analysis.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Physical characterization and modeling of candidate Hyper-Compact HII Regions

    astro-ph.GA 2026-05 unverdicted novelty 3.0

    VLA imaging and modeling of five HC HII candidates indicate most are small UC HII regions, with G40.28-0.22 as the strongest remaining HC case.