منابع مشابه
Galaxy clustering and galaxy bias in a Lambda CDM universe
We investigate galaxy clustering and the correlations between galaxies and mass in the ΛCDM cosmological model (inflationary cold dark matter with Ωm = 0.4, ΩΛ = 0.6, h = 0.65, n = 0.95, σ8 = 0.8), using a large, smoothed particle hydrodynamics simulation (SPH, with 2 × 144 particles in a 50hMpc cube). Simulated galaxies can be unambiguously identified as clumps of stars and cold gas a few kpc ...
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We determine the evolution from z = 3 → 0 of the galaxy and mass correlation functions and bias factor in a 50hMpc ΛCDM hydrodynamic simulation with 10hkpc resolution. The mass correlation function grows with time, but the galaxy correlation function shows little evolution and is well described by a power law. At early times, galaxies are biased traces of mass, with bias being higher on smaller...
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متن کاملGalaxies in a simulated Lambda CDM universe - II. Observable properties and constraints on feedback
We compare the properties of galaxies that form in a cosmological simulation without strong feedback to observations of the z = 0 galaxy population. We confirm previous findings that models without strong feedback overproduce the observed galaxy baryonic mass function, especially at the low and high mass extremes. Through post-processing we investigate what kinds of feedback would be required t...
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We study the formation of galaxies in a large volume (50h Mpc, 2 × 288 particles) cosmological simulation, evolved using the entropy and energy conserving smoothed particle hydrodynamics (SPH) code GADGET-2. Most of the baryonic mass in galaxies of all masses is originally acquired through filamentary “cold mode” accretion of gas that was never shock heated to its halo virial temperature, confi...
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ژورنال
عنوان ژورنال: Physics of Atomic Nuclei
سال: 2017
ISSN: 1063-7788,1562-692X
DOI: 10.1134/s1063778817050076