Keywords
H II Regions:Spiral Galaxies
Spiral Galaxies:H II Regions
Spiral Galaxies:H II Regions
How to Cite
Abundance determination from H II regions in NGC 2403. (1986). Revista Mexicana De Astronomía Y Astrofísica, 12(1), 308. https://astronomia.unam.mx/journals/rmxaa/article/view/1986rmxaa..12..308f
Abstract
We present photoelectric spectrophotometry in the 3400-74O0Å range for five HII regions in the spiral galaxy NGC2403. The ionic abundances of He+, N+, O+, O++, Ne++, S+ and Ar++ relative to H+, as well as the total N and O abundances are derived. Gradients in electron temperature, He/H, N/H and O/H were found. By comparing N/O and O/H values with chemical evolution models by Serrano and Peimbert (1983) and Tosi and Diaz (1985) a lower H2 abundance is supported such as the one proposed by Bhat . (1986).Similar Articles
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