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

• Grant number: 14/11339-1
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: August 01, 2014
• End date: September 16, 2015
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics
• Principal Investigator: Claudia Lucia Mendes de Oliveira
• Grantee: Luiz Mauricio Azanha
• Host 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

Abstract

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.