Environmental effects on associations of dwarf galaxies
C.Yamila Yaryura, Mario G. Abadi, Stefan Gottl\"ober, Noam I., Libeskind, Sof\'ia A. Cora, Andr\'es N. Ruiz, Cristian A. Vega-Mart\'inez,, Gustavo Yepes

TL;DR
This study investigates how the environment influences the properties of dwarf galaxy associations using simulations, revealing their distribution in cosmic structures and the impact on their dynamics.
Contribution
It introduces a method to classify dwarf galaxy associations by environment and analyzes their dynamical properties within a cosmological simulation.
Findings
Two thirds of associations are in filaments.
Associations in denser environments have higher velocity dispersions.
The environment's effect on velocity dispersion depends on gravitational binding.
Abstract
We study the properties of associations of dwarf galaxies and their dependence on the environment. Associations of dwarf galaxies are extended systems composed exclusively of dwarf galaxies, considering as dwarf galaxies those galaxies less massive than . We identify these particular systems using a semi-analytical model of galaxy formation coupled to a dark matter only simulation in the Cold Dark Matter cosmological model. To classify the environment, we estimate eigenvalues from the tidal field of the dark matter particle distribution of the simulation. We find that the majority, two thirds, of associations are located in filaments ( per cent), followed by walls ( per cent), while only a small fraction of them are in knots ( per cent) and voids ( per cent). Associations located…
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