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The internal dynamical equilibrium of HII regions: a statistical study
M. Relano, J. E. Beckman, A. Zurita +2
We present an analysis of the integrated Halpha emission line profiles for the HII region population of the spiral galaxies NGC 1530, NGC 6951 and NGC 3359. We show that 70% of the…
Expansive components in H II regions
M. Relano, J. E. Beckman
We study the presence of low intensity high velocity components, which we have termed wing features in the integrated Halpha emission line profiles of the HII region populations of…
Gas flows, star formation and galaxy evolution
John E. Beckman, Emilio Casuso, Almudena Zurita +1
In the first part of this article we show how observations of the chemical evolution of the Galaxy: G- and K-dwarf numbers as functions of metallicity, and abundances of the light…
Propagation of ionizing radiation in HII regions: the effects of optically thick density fluctuations
C. Giammanco, J. E. Beckman, A. Zurita +1
The accepted explanation of the observed dichotomy of two orders of magnitude between in situ measurements of electron density in HII regions, derived from emission line ratios, an…