Analysis of large-scale structures with photometric redshifts

• Grant number: 07/03146-5
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: September 01, 2007
• End date: August 31, 2011
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics
• Principal Investigator: Laerte Sodré Junior
• Grantee: Walter Augusto dos Santos Junior
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

In this project, we intend to continue the development of the photometric redshift method based on the technique Locally Weighted Regression and apply it to identify large scale structures. During his Masters work, the student implemented, tested and applied a photometric redshift estimator using that technique. This estimator should be enhanced and its incorporation to a hybrid algorithm, which also uses artificial neural nets and/or templates, will be evaluated. We will also investigate detection of large scale structures using photometric redshifts. Our techniques will be applied first to the databases of Sloan Digital Sky Survey and Canada-France-Hawaii Telescope Legacy Survey.