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Evolution of star forming dwarf galaxies: Characterizing the star formation scenarios

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(2011)cite arxiv:1111.1925 Comment: 18 pages, 10 figures, to be published in MNRAS.

Abstract

We use the self-consistent model technique developed by Martín-Manjón et al. (2008) that combines the chemical evolution with stellar population synthesis and photo-ionization codes, to study the star formation scenarios capable of reproducing the observed properties of star-forming galaxies. The comparison of our model results with a database of HII galaxies shows that the observed spectra and colors of the present burst and the older underlying population are reproduced by models in a bursting scenario with star formation efficiency involving close to 20 per cent of the total mass of gas, and inter-burst times longer than 100 Myr, and more probably around 1 Gyr. Other modes like gasping and continuous star formation are not favored.

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