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Halo Contraction Effect in Hydrodynamic Simulations of Galaxy Formation
Oleg Y. Gnedin, Daniel Ceverino, Nickolay Y. Gnedin +5
The condensation of gas and stars in the inner regions of dark matter halos leads to a more concentrated dark matter distribution. While this effect is based on simple gravitationa…
The impact of baryon physics on the structure of high-redshift galaxies
Marcel Zemp, Oleg Y. Gnedin, Nickolay Y. Gnedin +1
We study the detailed structure of galaxies at redshifts z > 2 using cosmological simulations with improved modeling of the interstellar medium and star formation. The simulations…
On determining the shape of matter distributions
Marcel Zemp, Oleg Y. Gnedin, Nickolay Y. Gnedin +1
A basic property of objects, like galaxies and halos that form in cosmological structure formation simulations, is their shape. Here, we critically investigate shape determination…