Constrained simulations of the Local Group: on the radial distribution of substructures (2009)
Libeskind, Noam I, Yepes, Gustavo, Knebe, Alexander, Gottloeber, Stefan, Hoffman, Yehuda, Knollman, Steffen R
We examine the properties of satellites found in high resolution simulations of the local group. We use constrained simulations designed to reproduce the main dynamical features that characterize the...
The grouping, merging and survival of subhaloes in the simulated Local Group (2009)
Klimentowski, Jaroslaw, Lokas, Ewa L., Knebe, Alexander, Gottloeber, Stefan, Martinez-Vaquero, Luis A., Yepes, Gustavo, ...
We use a simulation performed within the Constrained Local UniversE Simulation (CLUES) project to study a realistic Local Group-like object. We employ this group as a numerical laboratory for...
Constrained simulations of the local universe: II. The nature of the local Hubble flow (2009)
Martinez-Vaquero, Luis A., Yepes, Gustavo, Hoffman, Yehuda, Gottlöber, Stefan, Sivan, Mira
Using a suite of N-body simulations in different Cold Dark Matter (CDM) scenarios, with cosmological constant (\LCDM) and without (OCDM, SCDM), we study the Hubble flow (\sigh) in Local Volumes (LV)...
Toward a halo mass function for precision cosmology: the limits of universality (2008)
Tinker, Jeremy L, Kravtsov, Andrey V, Klypin, Anatoly, Abazajian, Kevork, Warren, Michael S, Yepes, Gustavo, ...
We measure the mass function of dark matter halos in a large set of collisionless cosmological simulations of flat LCDM cosmology and investigate its evolution at z
Knebe, Alexander, Draganova, Nadya, Power, Chris, Yepes, Gustavo, Hoffman, Yehuda, Gottloeber, Stefan, ...
We explore the dependence of the radial alignment of subhalos on the mass of the host halo they orbit in. As the effect is seen on a broad range of scales including massive clusters as well as...
The Local Hubble Flow: Is it a Manifestation of Dark Energy? (2007)
Hoffman, Yehuda, Martinez-Vaquero, Luis A., Yepes, Gustavo, Gottloeber, Stefan
To study the local Hubble flow, we have run constrained dark matter (DM) simulations of the Local Group (LG) in the concordance LCDM and OCDM cosmologies, with identical cosmological parameters apart...
Too small to form a galaxy: How the UV background determines the baryon fraction (2007)
Hoeft, Matthias, Yepes, Gustavo, Gottloeber, Stefan
The cosmic ultraviolet background (UVB) heats the intergalactic medium (IGM), as a result the gas in dark matter halos below a certain mass is too hot to cool within a Hubble time. The UVB...
Is WMAP3 normalization compatible with the X-Ray cluster abundance? (2007)
Yepes, Gustavo, Sevilla, Raul, Gottloeber, Stefan, Silk, Joseph
We present the mass and X-ray temperature functions derived from a sample of more than 15,000 galaxy clusters of the MareNostrum Universe cosmological SPH simulations. In these simulations, we follow...
The Future of the Local Large Scale Structure: the roles of Dark Matter and Dark Energy (2007)
Hoffman, Yehuda, Lahav, Ofer, Yepes, Gustavo, Dover, Yaniv
We study the distinct effects of Dark Matter and Dark Energy on the future evolution of nearby large scale structures using constrained N-body simulations. We contrast a model of Cold Dark Matter and...
Constrained simulations of the local universe: I. Mass and motion in the Local Volume (2007)
Martinez-Vaquero, Luis A., Yepes, Gustavo, Hoffman, Yehuda
It has been recently claimed that there is no correlation between the distribution of galaxies and their peculiar velocities within the Local Volume (LV), namely a sphere of R=7/h Mpc around the...
Shape, spin and baryon fraction of clusters in the MareNostrum Universe (2007)
Gottloeber, Stefan, Yepes, Gustavo
The MareNostrum Universe is one of the largest cosmological SPH simulation done so far. It consists of $1024^3$ dark and $1024^3$ gas particles in a box of 500 $h^{-1}$ Mpc on a side. Here we study...
Dwarf galaxies in voids: suppressing star formation with photoheating (2006)
Hoeft, Matthias, Yepes, Gustavo, Gottlöber, Stefan, Springel, Volker
Imprints of mass accretion on properties of galaxy clusters (2005)
Faltenbacher, Andreas, Allgood, Brandon, Gottloeber, Stefan, Yepes, Gustavo, Hoffman, Yehuda
A large scale SPH+N-body simulation (GADGET) of the concordance LCDM universe is used to investigate orientation and angular momentum of galaxy clusters at z=0 in connection with their recent...
Dwarf galaxies in voids: Suppressing star formation with photo-heating (2005)
Hoeft, Matthias, Yepes, Gustavo, Gottloeber, Stefan, Springel, Volker
We study structure formation in cosmological void regions using high-resolution hydrodynamical simulations. Despite being significantly underdense, voids are populated abundantly with small dark...
Galaxy formation in voids: photo-evaporation (2004)
Hoeft, Matthias, Yepes, Gustavo, Gottlöber, Stefan, Springel, Volker
Radio relics in a cosmological cluster merger simulation (2003)
Hoeft, Matthias, Brueggen, Marcus, Yepes, Gustavo
Motivated by the discovery of a number of radio relics we investigate the fate of fossil radio plasma during a merger of clusters of galaxies using cosmological smoothed-particle hydrodynamics...
On the supernovae heating of intergalactic medium (2000)
Kravtsov, Andrey V., Yepes, Gustavo
We present estimates of the energy input from supernovae (SNe) into the intergalactic medium using (i) recent measurements of Si and Fe abundances in the intracluster medium (ICM) and (ii)...
Numerical Simulations of Galaxy Formation: Cooling, Heating, Star Formation (1997)
Klypin, Anatoly, Gottlober, Stefan, Yepes, Gustavo
Formation of luminous matter in the Universe is a complicated process, which includes many processes and components. It is the vastly different scales involved in the process (from star formation on...