| Grant number: | 11/22796-6 |
| Support type: | Regular Research Grants - Publications - Scientific article |
| Duration: | January 01, 2012 - June 30, 2012 |
| Field of knowledge: | Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics |
| Principal Investigator: | Gastão Cesar Bierrenbach Lima Neto |
| Grantee: | Gastão Cesar Bierrenbach Lima Neto |
| Home Institution: | Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil |
Abstract
We present a new method to quantify substructures in clusters of galaxies,based on the analysis of the intensity of structures.This analysis is done in a residual image that is the result of thesubtraction of a surface brightness model, obtained by fitting atwo-dimensional analytical model (beta-model or Sérsic profile) withelliptical symmetry, from the X-ray image.Our method is applied to 34 clusters observed by the Chandra SpaceTelescope that are in the redshift range 0.02