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pro vyhledávání: '"R. I. Haefner"'
Autor:
R. D. Blum, S. R. Cranmer, G. P. Tiede, R. I. Haefner, B. Ali, G. J. Ferland, T. E. Bumgardner
Publikováno v:
Publications of the Astronomical Society of the Pacific. 103:1182
The usefulness of the Ne III-O II forbidden-line spectrum as a helium ionization correction factor (ICF) indicator in low-density nebulae, such as H II regions, is examined, and the results of an extensive grid of photoionization simulations which ha