Chemical and dynamical evolution in gas-rich dwarf galaxies
| dc.creator | Recchi, Simone | |
| dc.creator | Matteucci, Francesca | |
| dc.creator | D'Ercole, Annibale | |
| dc.date | 2000-02-18 | |
| dc.date.accessioned | 2026-07-07T01:52:23Z | |
| dc.date.available | 2026-07-07T01:52:23Z | |
| dc.description | We study the effect of a single, instantaneous starburst in a gas-rich dwarf galaxy on the dynamical and chemical evolution of its interstellar medium. We consider the energetic input and the chemical yields originating from SNeII, SNeIa and intermediate-mass stars. We find that a galaxy resembling IZw18 develops a galactic wind carrying out mostly the metal-rich gas. The various metals are lost differentially and the metals produced by the SNeIa are lost more efficiently than the others. As a consequence, we find larger [$α$/Fe] ratios for the gas inside the galaxy than for the gas leaving the galaxy. Finally we find that a single burst occurring in primordial gas (without pre-enrichment), gives chemical abundances and dynamical structures in good agreement with what observed in IZw18 after $\sim$ 29 Myr from the beginning of star formation. | |
| dc.description | 4 pages, Latex, 2 figures, to be published in "Cosmic Evolution and Galaxy Formation: Structure, Interactions and Feedback", ASP Conference Series | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0002371 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0002371 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/602 | |
| dc.subject | Astrophysics | |
| dc.title | Chemical and dynamical evolution in gas-rich dwarf galaxies | |
| dc.type | text |