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Galaxy groups and clusters: comparing the extremes of the "luminosity gap"

Grant number: 14/11339-1
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): August 01, 2014
Effective date (End): September 16, 2015
Field of knowledge:Physical Sciences and Mathematics - Astronomy
Principal Investigator:Claudia Lucia Mendes de Oliveira
Grantee:Luiz Mauricio Azanha
Home Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated scholarship(s):14/23386-4 - Study of the central galaxies of fossil groups, BE.EP.IC


This project focuses on the study of a large sample of MaxBCG groups and clusters with the aim of determining several parameters for these systems. In particular, a sample of fossil groups (systems in which the gap in magnitude between the first and second ranked galaxies is greater than 2) and Dumbell clusters (systems with two dominant galaxies of about equal luminosities) will be studied. Radial velocities, velocity dispersions, mass, total luminosities, M/L, and search for substructures are some of the analysis planned. The results will be compared for the two samples and for samples in the literature.