We know that heavier elements than boron were not produced in the primordial nucleosynthesis and are produced only inside the stars.In the 70's, the emission of heavy metal lines, such as silicon and iron, by the intra-cluster gas were detected.These observations show that this gas was enriched by metals transported from the intergalactic medium to the intra-group (IGM) or intra-cluster medium (ICM) byphysical mechanisms such as ram-pressure and galactic winds.Even today, due mainly to the observational limitations, little is known about the spatial distribution of the different chemical elementspresent in the IGM/ICM and the role of each physical mechanism in the transport of metals.Most current studies are limited to the analysis of a limited number of systems and focus on the radial profileof the chemical elements. In the literature we find few results of the spatial distribution of the different elements.Given the opportunities left in the investigation of the history of chemical evolution of groups and clusters of galaxies, we proposeto analyse the history of chemical enrichment of these systems, from two-dimensional maps constructed from X-ray observation data, andcompare the observational results to those obtained from hydrodynamical simulations.From this comparison we will better understand the role of the different mechanisms in transporting metals to the ICM/IGM.For the proposed project, we will use a sample of approximately 100 systems (four times larger than those currently used)with the objective of performing a pioneering work in the study of the spatial distribution of metals of groups andclusters of galaxies. (AU)
Articles published in Agência FAPESP Newsletter about the research grant:
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
LOURENCO, ANA C. C.;
LOPES, P. A. A.;
LAGANA, T. F.;
NASCIMENTO, R. S.;
MACHADO, R. E. G.;
MOURA, M. T.;
JAFFE, Y. L.;
RIBEIRO, A. L.;
RIGUCCINI, L. A.
The dynamical state of Abell 2399: a bullet-like cluster.
Monthly Notices of the Royal Astronomical Society,
Web of Science Citations: 0.