| Texto completo | |
| Autor(es): |
Lovisari, Lorenzo
;
Lagana, Tatiana
;
Borm, Katharina
;
Schellenberger, Gerrit
;
Reiprich, Thomas
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ACTA POLYTECHNICA; v. 53, p. 4-pg., 2013-01-01. |
| Resumo | |
The baryonic composition of galaxy clusters and groups is dominated by a hot, X-ray emitting Intra-Cluster Medium (ICM). The mean metallicity of the ICM has been found to be roughly 0.3 divided by 0.5 times the solar value, so a large fraction of this gas cannot be of purely primordial origin. Indeed, the distribution and the amount of metals in the ICM is a direct consequence of the past history of star formation in the cluster galaxies and of the processes responsible for the injection of enriched material into the ICM. We here briefly summarize current views on the chemical enrichment, focusing on the observational evidence in terms of metallicity measurements in clusters, spatial metallicity distribution and evolution, and expectations from future missions. (AU) | |
| Processo FAPESP: | 08/04318-7 - Enriquecimento do gás intra-aglomerado e a eficiência de formação estelar em aglomerados de galáxias |
| Beneficiário: | Tatiana Ferraz Laganá |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |