Hints on Galaxy Formation from the Metal Content of Galaxy Cluster and Other Fossil Evidence
| dc.creator | Renzini, Alvio | |
| dc.date | 1998-10-20 | |
| dc.date.accessioned | 2026-07-07T02:28:29Z | |
| dc.date.available | 2026-07-07T02:28:29Z | |
| dc.description | Clusters of galaxies allow a direct estimate of the metallicity and metal production yield on the largest scale so far. It is argued that cluster metallicity ($\sim 1/3$ solar) should be taken as representative of the low-$z$ universe as a whole. There is now compelling evidence that the bulk of stars not only in cluster ellipticals but also in field ellipticals and bulges formed at high redshifts ($z\gsim 3$). Since such stars account for at least $\sim 30%$ of the baryons now locked into stars, it is argued that at least 30% of stars and metals formed before $z\simeq 3$, and correspondingly the metallicity of the universe at $z=3$ is predicted to be $\sim 1/10$ solar. This requires the cosmic star formation rate to run at least flat from $z\sim 1$ to $\sim 5$, which appears to agree with the most recent derect determinations of the star formation rate in Lyman-break galaxies. | |
| dc.description | 9 pages, 3 figures, to appear on "The Birth of Galaxies", ed. B. Guiderdoni et al. (Gif-sur-Yvette, Editions Frontieres) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9810304 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9810304 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/13141 | |
| dc.subject | Astrophysics | |
| dc.title | Hints on Galaxy Formation from the Metal Content of Galaxy Cluster and Other Fossil Evidence | |
| dc.type | text |