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2008MNRAS.389.1009S - Mon. Not. R. Astron. Soc., 389, 1009-1021 (2008/September-3)
The ionizing radiation from massive stars and its impact on HII regions: results from modern model atmospheres.
SIMON-DIAZ S. and STASINSKA G.
Abstract (from CDS):
We then discuss how the differences in the SEDs may affect the overall properties of surrounding nebulae in terms of temperature and ionization structure. We find that the effect over the nebular temperature is not larger than 300-350 K. Contrarily, the different SEDs produce significantly different nebular ionization structures. This will lead to important consequences on the establishment of the ionization correction factors that are used in the abundance determination of Hii regions, as well as in the characterization of the ionizing stellar population from nebular line ratios.
Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS
Journal keyword(s): stars: atmospheres - stars: early-type - stars: fundamental parameters - Hii regions
Simbad objects: 2
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