The impact of dust and ionization effects on abundance measurements of Damped Ly alpha systems
| dc.creator | Vladilo, Giovanni | |
| dc.date | 2001-08-29 | |
| dc.date | 2001-08-30 | |
| dc.date.accessioned | 2026-07-07T01:59:46Z | |
| dc.date.available | 2026-07-07T01:59:46Z | |
| dc.description | Studies of elemental abundances are a fundamental tool for unveiling the nature of the high-redshift (proto-)galaxies associated to Damped Ly alpha systems (DLAs). The present contribution analyses the impact of dust and ionization effects on abundance measurements in DLAs. The behaviour of the alpha/Fe abundance ratio corrected for such effects is used to derive information on the chemical history and nature of DLA galaxies. The alpha/Fe data indicate that DLAs at z~2.5 do not represent a homogeneous class of objects. On average, DLAs show non-enhanced alpha/Fe ratios at low metallicity, suggesting an origin in galaxies with low or intermittent star formation rates. | |
| dc.description | 10 pages, LaTeX (macro newpasp.sty), 3 figures, one reference corrected; invited talk in "Chemical Enrichment of Intracluster and Intergalactic Medium", Proceedings of the Vulcano Workshop, May 14-18 2001 | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0108466 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0108466 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/3251 | |
| dc.subject | Astrophysics | |
| dc.title | The impact of dust and ionization effects on abundance measurements of Damped Ly alpha systems | |
| dc.type | text |