Journal Article

Evolution of star-forming dwarf galaxies: characterizing the star formation scenarios

M. L. Martín-Manjón, M. Mollá, A. I. Díaz and R. Terlevich

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 420, issue 2, pages 1294-1308
Published in print February 2012 | ISSN: 0035-8711
Published online January 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.20122.x
Evolution of star-forming dwarf galaxies: characterizing the star formation scenarios

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We use the self-consistent model technique developed by Martín-Manjón et al. that combines the chemical evolution with stellar population synthesis and photoionization 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 data base of H ii galaxies shows that the observed spectra and colours 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 interburst times longer than 100 Myr, and more probably around 1 Gyr. Other modes like gasping and continuous star formation are not favoured.

Keywords: H ii regions; galaxies: dwarf; galaxies: evolution; galaxies: ISM; galaxies: starburst; galaxies: star formation

Journal Article.  10635 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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