Keywords
Galactic Evolution
H Ii Regions
Metallicity
Star Formation
Statistical Analysis
Charge Coupled Devices
Giant Stars
Supergiant Stars
Ultraviolet Telescopes
Astrophysics
H II Regions: Extragalactic
H II Regions: Evolution
H II Regions: Mass Function
H Ii Regions
Metallicity
Star Formation
Statistical Analysis
Charge Coupled Devices
Giant Stars
Supergiant Stars
Ultraviolet Telescopes
Astrophysics
H II Regions: Extragalactic
H II Regions: Evolution
H II Regions: Mass Function
How to Cite
Statistical properties of H II regions. (1989). Revista Mexicana De Astronomía Y Astrofísica, 18(1), 115-119. https://astronomia.unam.mx/journals/rmxaa/article/view/1989rmxaa..18..115d
Abstract
The analysis of McCall et al. (1985) data for 99 H II regions in galaxies of different metallicities allow to obtain a Zero Age Sequence (ZAS) in the WHβ vs O/H diagram, for the process of H II regions formation as well as limits for the Upper Mass Limit (μ) and and slope (x) of the IMF. CCD observations of H II regions in NGC 2442 are discussed taking into account the influence of evolution when a large sample of objects are analyzed. For that particular case the gradient is not substantially altered, while the central metallicity is.Similar Articles
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