An Empirical View to the Early Chemical Evolution of Bulge/Disk Galaxies
| dc.creator | Renzini, Alvio | |
| dc.date | 2001-11-05 | |
| dc.date.accessioned | 2026-07-07T02:01:13Z | |
| dc.date.available | 2026-07-07T02:01:13Z | |
| dc.description | Scaling from the empirical metal yield as measured in clusters of galaxies, it is inferred that early in the evolution of the Galaxy the bulge stellar population has produced $\sim 10^9\msun$ of metals, at least 5 times more than the total metal content of the bulge today. It is argued that an early galactic wind from the starbursting bulge has pre-enriched a vast region around it, with these metals being able to enrich to $\sim 1/10$ solar of order of $5\times 10^{11}\msun$ of pristine material. From the empirical evidence that bulges come before disks, it is inferred that the Milky Way disk formed out of this pre-enriched material, which accounts for the scarcity of metal poor stars in the solar neighborhood, the so-called `G-Dwarf Problem'. High redshift observations are now becoming able to efficiently explore the $1.2\lsim z\lsim 3$ region of the universe, when disk formation and morphological differentiation may have taken place. | |
| dc.description | Latex, 6 pages, to appear in "Chemical Enrichment of Intracluster and Intergalactic Medium", ed. F. Matteucci and R. Fusco-Femiano (ASP Conf. Ser | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0111090 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0111090 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/3667 | |
| dc.subject | Astrophysics | |
| dc.title | An Empirical View to the Early Chemical Evolution of Bulge/Disk Galaxies | |
| dc.type | text |