Other
Scientific paper
Mar 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003mnssa..62a..88f&link_type=abstract
Monthly Notes of the Astronomical Society of South Africa, 62, 88-90
Other
Hii, Starburst, Abundances, Ism, Dwarf, Evolution
Scientific paper
We have computed a series of realistic and self-consistent models able to reproduce the observable characteristics of HII galaxies in a star bursting scenario. Our models combine different codes of chemical evolution, evolutionary population synthesis and photoionization. The emitted spectrum of HII galaxies is calculated by means of the photoionization code CLOUDY, using as ionizing spectrum the spectral energy distribution (SED) of the modelled HII galaxy. These SED have been computed using new and updated stellar population models, obtained according to the star formation and the metal enrichment histories given by a chemical evolution model. Each model is characterized by three parameters which determine the evolution of a given galaxy: the initial efficiency of star formation, the attenuation or strenght of these bursts, and the elapsed time between them. Our model technique gives results that reproduce the observed abundances, diagnostic diagrams and equivalent width vs colour relations for local HII galaxies in every evolutionary stage, and can be extrapolated to other objects under different assumed star formation scenarios.
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