III Workshop de Astronomia e Astrofísica do Paraná - 2024

Session

Astrofísica Galáctica e Extra-Galáctica

Not scheduled

61. Dynamic State of the Galaxy Cluster AS0592: Insights from Simulations and X-ray Observations

Richards Albuquerque (Universidade Tecnológica Federal do Paraná)

Galaxy cluster mergers are energetic events, where the shock front can reach temperatures of tens of keV. AS0592, located at $z=0.22$, is likely a binary galaxy cluster merger aligned along the line of sight. Using deep Chandra observations (totaling 100 ks) and $N$-boby hydrodynamic simulations, we investigate the dynamical evolution of AS0592. The X-ray data reveal two peaks in the...

98. Effects on jellyfish galaxies from crossing discontinuous environments

Elvis Mello (UTFPR - Universidade Tecnológica Federal do Paraná)

Ram pressure is directly related to the local density a galaxy interacts with, actively stripping its gas and forming the distinctive trails seen in jellyfish galaxies. Sloshing spirals are a common phenomenon observed in clusters that present significant density and temperature discontinuities that may impact the evolution of jellyfish galaxies crossing them. We aim to quantify how crossing...

48. Mock images of galaxies: a link between cosmological simulations and observational astronomy

Gustavo Fernandes Gonçalves (Universidade Tecnológica Federal do Paraná)

Cosmological simulations, such as IllustrisTNG, are widely used to study the formation and evolution of galaxies on different scales, using parameters and physical models with a high degree of detail. However, the direct comparison of the results from N-body and smoothed particle hydrodynamics simulations with data from observational astronomy is not a straightforward step, presenting...

78. Morphology and star formation implications of the presence of a CGM during galactic interaction

Vinicius Freire Fochesatto (Universidade Tecnológica Federal do Paraná (UTFPR))

Obsevational data constraints from the eROSITA mission have estimated X-ray surface brightness profile ranges of the gas in the circumgalactic medium (CGM) in M31-like and Milky Way-like galaxies. Temperatures and gas density from similar galaxies in the Illustris TNG simulation have also been characterized. During a galactic interaction, it is possible that the presence of a CGM may affect...

64. Origem e propagação de Deutério na Galáxia

Thiago Cesar Dias Pinto (PPGFA-UTFPR)

Os estudos sobre raios cósmicos avançaram ao longo de décadas. A descoberta desses raios ocorreu em 1912, quando o físico austríaco Victor Hess, utilizando balões, observou um aumento na radiação ao ascender na atmosfera terrestre, sugerindo uma origem extraterrestre. Apesar do progresso, as fontes destas partículas cósmicas ainda são desconhecidas. Esse desafio se deve à interação dos raios...

66. Relações massa-concentração em escalas de grupos e aglomerados de galáxias: Impacto nas restrições de massa e de parâmetros cosmológicos.

Thais Ornellas (Universidade Estadual de Londrina)

Galaxy clusters are the universe's largest bound structures, and their use as a cosmological probe depends on their mass estimates, which cannot be measured directly. One of the most promising mass proxies is the surface mass density and related quantities (such as the reduced shear) from gravitational weak lensing. Its theoretical modeling depends on the halo mass density profile, which is...

47. The influence of satellites on the development of warps in barred and non-barred galaxies

Andressa Wille (UTFPR)

The interaction with satellites change the morphology of the galaxies. These interactions can induce vertical asymmetries, such as S-shaped warps, which bend one part upwards and the other downwards. If the galaxy is barred, the passage of the satellite also affects the development of bar. In this study, we aim to compare barred and non-barred galaxy models and their susceptibility to warps...