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- W1541032044 abstract "Blue Compact Dwarf and Dwarf Irregular galaxies are generally believed to be unevolved objects, due to their blue colors, compact appearance and large gas fractions. Many of these objects show an ongoing intense burst of star formation or have experienced it in the recent past. By means of 2-D hydrodynamical simulations, coupled with detailed chemical yields originating from SNeII, SNeIa and intermediate-mass stars, we study the dynamical and chemical evolution of model galaxies with structural parameters similar to IZw18 and NGC1569. Bursts of star formation with short duration are not able to account for the chemical and morphological properties of these galaxies. The best way to reproduce the chemical composition of these objects is by assuming long-lasting episodes of star formation and a more recent burst, separated from the previous episodes by a short quiescent period. The last burst of star formation, in most of the explored cases, does not affect the chemical composition of the galaxy observable in HII regions, since the enriched gas produced by young stars is in a too hot phase to be detectable with the optical spectroscopy." @default.
- W1541032044 created "2016-06-24" @default.
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- W1541032044 date "2004-12-15" @default.
- W1541032044 modified "2023-09-27" @default.
- W1541032044 title "Continuous star formation in gas-rich dwarf galaxies" @default.
- W1541032044 doi "https://doi.org/10.48550/arxiv.astro-ph/0412379" @default.
- W1541032044 hasPublicationYear "2004" @default.
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