38 citations · 95 across the 7 of their papers we have counts for
8 papers
Cluster halo shapes in CDM and SIDM models: Unveiling the DM particle nature using a weak lensing approach
Elizabeth Johana Gonzalez, Agustín Rodriguez-Medrano, Luis Alberto Pereyra +1
Self-interacting dark matter (SIDM) is an alternative to the standard collisionless cold dark matter model (CDM), allowing for interactions between the dark matter particles throug…
Anisotropic infall in the outskirst of clusters
Juan Manuel Salerno, Hernán Muriel, Valeria Coenda +4
We analyse the connection between the star formation quenching of galaxies and their location in theoutskirts of clusters in the redshift range by estimating the fraction…
A deep near-infrared view of the Ophiuchus galaxy cluster
D. Galdeano, G. Coldwell, F. Duplancic +8
Context: The Ophiuchus cluster of galaxies, located at low latitudes in the direction of the Galactic bulge, has been relatively poorly studied in comparison with other rich galaxy…
Overdensity of VVV galaxies behind the Galactic bulge
Daniela Galdeano, Luis Pereyra, Fernanda Duplancic +7
We studied a region of 1.636 square degrees corresponding to the VVV tile . Using SExtractor, we analysed photometric data generating a catalogue of extended sources in this…
GriSPy: A Python package for Fixed-Radius Nearest Neighbors Search
Martin Chalela, Emanuel Sillero, Luis Pereyra +4
We present a new regular grid search algorithm for quick fixed-radius nearest-neighbor lookup developed in Python. This module indexes a set of k-dimensional points in a regular gr…
A comparison of cosmological filaments catalogues
Agustín Rost, Federico Stasyszyn, Luis Pereyra +1
In this work we compare three catalogues of cosmological filaments identified in the Sloan Digital Sky Survey by means of different algorithms by Tempel et al., Pereyra et al., and…
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…
Occurrence of LINER galaxies within the galaxy group environment
Georgina Coldwell, Luis Pereyra, Sol Alonso +2
We study the properties of a sample of 3967 LINER galaxies selected from SDSS-DR7, respect to their proximity to galaxy groups. The host galaxies of LINER have been analysed and co…