| Grant number: | 24/03575-9 |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| Start date: | May 01, 2024 |
| End date: | April 30, 2026 |
| Field of knowledge: | Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics |
| Principal Investigator: | Claudia Lucia Mendes de Oliveira |
| Grantee: | Lia Doubrawa |
| Host Institution: | Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil |
| Associated research grant: | 11/51680-6 - Exploring the universe: from the galaxies formation to Earth-like planets with the Giant Magellan Telescope, AP.ESP |
| Associated scholarship(s): | 25/11378-1 - eSCALE: eRosita and S-PLUS studies on galaxy groups and clusters, BE.EP.PD |
Abstract Studies of large-scale structures in the Universe reveal that galaxy clusters form in regions of matter overdensity, concentrating in filamentary structures that comprise the cosmic web. In this context, galaxies are also affected and tend to spatially align with the brightest galaxies in the cluster (BCGs), relative to the angle of their major axis (PA). Research involving observations and simulations aims to unravel the parameters that influence these alignments, such as the direction of material accretion during the evolution and growth of galaxy clusters, gravitational tidal and torque effects, and the matter distribution during the formation of the BCG. In preparation for future work with next-generation megatelescopes, as the Giant Magellan telescope (GMT), we will use accurate data from the photometric survey S-PLUS/DR4 and iDR5. We will select initially rich and high-contrast clusters with field galaxies, up to a redshift of z<0.4, to observe the alignment effect of member galaxies and BCGs. These catalogs were previously prepared using the PZWav cluster detection algorithm and member detection by the AME algorithm. The search for clusters in the process of merging can provide strong evidence for our study. In addition to optical observations, we will employ numerical simulations such as GalSim/Gadget/Arepo to compare our results and study in detail their evolution over time. With this study, we aim to provide observational and numerical evidence on the evolution of clusters and their BCGs, as well as their relationship with the filamentary structures of the Universe. | |
| News published in Agência FAPESP Newsletter about the scholarship: | |
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