A Novel Spectrophotometric Decomposition Method for Multi-Band Surveys. Unveiling the Stellar Populations of multiple galaxy components using J-PLUS and MaNGA surveys

• Grant number: 24/05315-4
• Support Opportunities: Research Grants - Visiting Researcher Grant - International
• Start date: October 01, 2024
• End date: September 30, 2025
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics
• Principal Investigator: Paula Rodrigues Teixeira Coelho
• Grantee: Paula Rodrigues Teixeira Coelho
• Visiting researcher: Rafael da Silva de Souza
• Visiting researcher institution: University Of Hertfordshire/Uh, England
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

This project presents a novel approach to study galaxy evolution by investigating the stellar population properties within different structural components of galaxies, utilizing data from the J-PLUS and SDSS-IV MaNGA IFU survey. Moving beyond the conventional focus on radial gradients and the simplistic bulge-plus-disk dichotomy, it aims to conduct a comprehensive comparison of integrated stellar ages and metallicities across various galactic structures. This is achieved through a novel non-parametric SED-decomposition method, which avoids the assumptions inherent in traditional parametric techniques and offers a more inclusive analysis of a broad selection of galaxy samples, including those experiencing mergers and other disruptive events. By leveraging the power of modern GPU parallelization, our approach resonates well with the current needs of increasing astrophysical model complexity without sacrificing computational performance. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DANTAS, M. L. L.; SMILJANIC, R.; DE SOUZA, R. S.; TISSERA, P. B.; MAGRINI, L.. Probing the origins: I. Generalised additive model inference of birth radii for Milky Way stars in the solar vicinity. Astronomy & Astrophysics, v. 696, p. 35-pg., 2025-04-25. (24/05315-4)