Investigating environmental effects in galaxy evolution: from cosmological simulations to observations

• Grant number: 20/16243-3
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: August 01, 2021
• End date: February 28, 2025
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics
• Principal Investigator: Reinaldo Ramos de Carvalho
• Grantee: Vitor Medeiros Sampaio
• Host Institution: Pró-Reitoria de Pós-Graduação, Pesquisa e Extensão. Universidade Cidade de São Paulo (UNICID). São Paulo , SP, Brazil
• Associated scholarship(s): 21/13683-5 - The interplay between internal and environmental quenching mechanisms in central galaxies evolution, BE.EP.DR

Abstract

This project is focused on understanding how environmental mechanisms rule galaxy evolution, especially in galaxy clusters. Ram pressure stripping and starvation are pointed out as the main mechanism for star formation quenching in galaxies. However, other effects, such as tidal mass loss and galaxy-galaxy merger, may also play a fundamental role in shaping galaxy evolution. We aim to compare observational data and its cosmological simulation counterpart. First, we are going to redefine the Yang Catalog using data from the SDSS-DR16. For the galaxy members, we will estimate and retrieve from different sources of relevant parameters. This will be combined with the projected phase space for each cluster to derive pivotal information about both star formation quenching in galaxy members and infalling rate. On the other hand, simulations will be used to provide a full description on how the limitation to one single line of sight affects the observed quantities. Furthermore, they will also be used to create a training set for a machine/deep learning algorithm that aims to define the dynamical stage of clusters based on the observed projected phase space. (AU)

Scientific publications

(9)

(The scientific publications listed on this page originate from the Web of Science or SciELO databases. Their authors have cited FAPESP grant or fellowship project numbers awarded to Principal Investigators or Fellowship Recipients, whether or not they are among the authors. This information is collected automatically and retrieved directly from those bibliometric databases.)

SAMPAIO, V. M.; DE CARVALHO, R. R.; FERRERAS, I; ARAGON-SALAMANCA, A.; PARKER, L. C.. From blue cloud to red sequence: evidence of morphological transition prior to star formation quenching. Monthly Notices of the Royal Astronomical Society, v. 509, n. 1, p. 567-585, JAN 2022. (14/11156-4, 20/16243-3)

SAMPAIO, V. M.; KOLESNIKOV, I; DE CARVALHO, R. R.; FERRERAS, I; SILK, J.. Morphology across cosmic time: assessing the evolution and interplay of disc- and bulge-dominated galaxies in the CANDELS survey. Monthly Notices of the Royal Astronomical Society, v. 541, n. 2, p. 16-pg., 2025-08-01. (20/16243-3, 20/15245-2)

KOLESNIKOV, I; SAMPAIO, V. M.; DE CARVALHO, R. R.; CONSELICE, C.. Galaxy morphology in CANDELS: addressing evolutionary changes across 0.2 ≤ z ≤ 2.4 with hybrid classification approach. Monthly Notices of the Royal Astronomical Society, v. 539, n. 3, p. 15-pg., 2025-05-01. (20/16243-3, 20/15245-2)

FERRERAS, I; TREVISAN, M.; LAHAV, O.; DE CARVALHO, R. R.; SILK, J.. Is velocity dispersion the major driver of stellar population properties over sub-galaxy scales? An SDSS MaNGA IFU study. Monthly Notices of the Royal Astronomical Society, v. 540, n. 1, p. 15-pg., 2025-06-01. (20/16243-3)

KOLESNIKOV, I; SAMPAIO, V. M.; DE CARVALHO, R. R.; CONSELICE, C.; REMBOLD, S. B.; MENDES, C. L.; ROSA, R. R.. Unveiling galaxy morphology through an unsupervised-supervised hybrid approach. Monthly Notices of the Royal Astronomical Society, v. 528, n. 1, p. 26-pg., 2024-01-13. (20/15245-2, 20/16243-3)

FERRERAS, I; BOEHM, A.; UMETSU, K.; SAMPAIO, V; DE CARVALHO, R. R.. Exploring the stellar populations of backsplash galaxies. Monthly Notices of the Royal Astronomical Society, v. 519, n. 4, p. 9-pg., 2023-03-01. (20/16243-3, 21/13683-5)

SAMPAIO, V. M.; ARAGON-SALAMANCA, A.; MERRIFIELD, M. R.; DE CARVALHO, R. R.; ZHOU, S.; FERRERAS, I. The co-evolution of strong AGN and central galaxies in different environments. Monthly Notices of the Royal Astronomical Society, v. 524, n. 4, p. 13-pg., 2023-07-29. (21/13683-5, 20/16243-3, 20/15245-2)

ZHOU, SHUANG; ARAGON-SALAMANCA, ALFONSO; MERRIFIELD, MICHAEL; SAMPAIO, V. M.. Where have all the low-metallicity galaxies gone? Tracing evolution in the mass-metallicity plane since a redshift of 0.7. Monthly Notices of the Royal Astronomical Society, v. 527, n. 2, p. 15-pg., 2023-11-09. (20/16243-3, 21/13683-5)

SAMPAIO, V. M.; DE CARVALHO, R. R.; ARAGON-SALAMANCA, A.; MERRIFIELD, M. R.; FERRERAS, I; CORNWELL, D. J.. Exploring galaxy evolution time-scales in clusters: insights from the projected phase space. Monthly Notices of the Royal Astronomical Society, v. 532, n. 1, p. 13-pg., 2024-07-02. (20/15245-2, 20/16243-3)