189 citations · 528 across the 15 of their papers we have counts for
9 papers · 1 filter
On the weak lensing masses of a new sample of galaxy groups
Elizabeth J. Gonzalez, Facundo Rodriguez, Manuel Merchán +6
Galaxy group masses are important to relate these systems with the dark matter halo hosts. However, deriving accurate mass estimates is particularly challenging for low-mass galaxy…
Combining FOF and halo-based algorithms for the identification of galaxy groups
Facundo Rodriguez, Manuel Merchán
Galaxy groups provide the means for a great diversity of studies that contribute to a better understanding of the structure of the universe on a large scale and allow the propertie…
Detection and analysis of cluster-cluster filaments
Luis A. Pereyra, Mario A. Sgró, Manuel E. Merchán +2
In this work, we identify and analyse the properties of cluster-cluster filaments within a cosmological simulation assuming that they are structures connecting maxima of the densit…
Deviations from tidal torque theory: environment dependences on halo angular momentum growth
Pablo López, Manuel E. Merchán, Dante J. Paz
The tidal torque theory (TTT) relates the origin and evolution of angular momentum with the environment in which dark matter (DM) haloes form. The deviations introduced by late non…
Weak lensing measurement of the mass-richness relation using the SDSS database
Elizabeth Johana Gonzalez, Facundo Rodriguez, Diego García Lambas +3
We study the mass-richness relation using galaxy catalogues and images from the Sloan Digital Sky Survey. We use two independent methods, in the first one, we calibrate the scaling…
The MeSsI (Merging Systems Identification) Algorithm & Catalogue
Martín de los Rios, Mariano J. Domínguez R., Dante Paz +1
Merging galaxy systems provides observational evidence of the existence of dark matter and constraints on its properties. Therefore, statistical uniform samples of merging systems…
Subhaloes gone Notts: Spin across subhaloes and finders
Julian Onions, Yago Ascasibar, Peter Behroozi +15
We present a study of a comparison of spin distributions of subhaloes found associated with a host halo. The subhaloes are found within two cosmological simulation families of Milk…
SubHaloes going Notts: The SubHalo-Finder Comparison Project
Julian Onions, Alexander Knebe, Frazer R. Pearce +14
We present a detailed comparison of the substructure properties of a single Milky Way sized dark matter halo from the Aquarius suite at five different resolutions, as identified by…
Alignments of Galaxy Group Shapes with Large Scale Structure
Dante J. Paz, Mario A. Sgró, Manuel Merchán +1
In this paper we analyse the alignment of galaxy groups with the surrounding large scale structure traced by spectroscopic galaxies from the Sloan Digital Sky Survey Data Release 7…