Anatoly Klypin

TL;DR: In this article, numerical effects in dissipationless cosmological simulations are evaluated and studied by comparing results of a series of 64^3-particle simulations of varying force resolution and number of time steps, performed using three different N-body techniques: the Particle Mesh (PM), the adaptive P3M (AP3M) code, and the adaptive refinement tree (ART) code.

TL;DR: In this paper, the authors acknowledge support from the Spanish Ministerio de Economia, Industria y Competitividad grant AYA2010-21231-C02-01.

TL;DR: In this article, the authors used 3D spectroscopy with a scanning Fabry-Perot interferometer to study the ionized gas kinematics in 59 nearby dwarf galaxies and provided a global relation between the gas velocity dispersion (sigma) and the star formation rate (SFR) and Hα luminosity for galaxies in a very broad range of star formation rates SFR=0.001-300 Msun/yr.

TL;DR: In this article, the first X-ray luminosity function (XLF) for an optically-selected sample of 49 nearby poor clusters of galaxies and a sample of 67 Abell clusters with z < 0.15 was presented.

TL;DR: In this paper, the authors applied mark correlation functions (MCFs) to study clustering of galaxy-size halos as a function of their properties and environment in a high-resolution numerical simulation of the CDM cosmology, showing that halos which experienced a relatively early (z> 1) major merger or mass loss in their evolution histories are over-abundant in halo pairs with separations <3 h 1 Mpc.