Analysis of Fundamental Metallicity Relation and Mass-metallicity Relation Evolution Based on IllustrisTNG
DOI:
https://doi.org/10.54097/8t7pxw26Keywords:
IllustrisTNG, galaxy formation, fundamental metallicity relation, star formation rate, mass-metallicity relation.Abstract
IllustrisTNG and the corresponding programming API function are used in this paper to analyze the relationship between different values and parameters (e.g., mass, density and SFR) and metallicity, FMR and visualize the essential relations such as relationship of metallicities and galaxies’ star formation rates (SFRs), gas fraction in galaxies with different redshifts and the stellar mass versus gas fraction at a given redshift. Based on the analysis, a path to a deeper understanding of the MZR properties and evolution is now paved by various results and conclusions. Based on the IllustrisTNG simulation, a major test of galaxy feedback models is the MZR, which simulates metal distribution and evolution. Based on IllustrisTNG simulations, MZR at redshifts 0 - 2 is generally in agreement with observations. A fundamental metallicity relation is supported by the model used and the conclusions presented in this article. In addition, this paper also focuses on the analysis of star formation rate associated with different values and parameters like redshifts with suitable example galaxies. For the relationship between the gas fraction and stellar mass, different z was fitted according to the relationship that Mgas/M* is proportional to M*γ, and for z=0, γ = −0.32. The fitting results agrees with the conclusion drawn, which states that as redshift increases, the relationship of gas fraction and stellar mass steepens.
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