Search Results - "Lambas Garcia, Diego"

Cluster halo shapes in CDM and SIDM models: unveiling the DM particle nature using a weak-lensing approach by Gonzalez, Elizabeth J, Rodríguez-Medrano, Agustín, Pereyra, Luis, García Lambas, Diego

“…ABSTRACT Self-interacting dark matter (SIDM) is an alternative to the standard collisionless cold dark matter model (CDM), allowing for interactions between…”
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Halo cluster shapes: insights from simulated galaxies and ICL with prospects for weak lensing applications by Gonzalez, Elizabeth J, Ragone-Figueroa, Cinthia, Donzelli, Carlos J, Makler, Martín, García Lambas, Diego, Granato, Gian Luigi

“…ABSTRACT We present a detailed study of the shapes and alignments of different galaxy cluster components using hydrodynamical simulations. We compute shape…”
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Structure and dynamics in low-density regions: galaxy–galaxy correlations inside cosmic voids by Ruiz, Andrés N, Alfaro, Ignacio G, Garcia Lambas, Diego

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Measuring the surface mass density ellipticity of redMaPPer galaxy clusters using weak lensing by Gonzalez, Elizabeth J, Makler, Martín, García Lambas, Diego, Chalela, Martín, Pereira, Maria E S, Van Waerbeke, Ludovic, Shan, HuanYuan, Erben, Thomas

“…ABSTRACT In this work, we study the shape of the projected surface mass density distribution of galaxy clusters using weak-lensing stacking techniques. In…”
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Clues on void evolution – III. Structure and dynamics in void shells by Ruiz, Andrés N., Paz, Dante J., Lares, Marcelo, Luparello, Heliana E., Ceccarelli, Laura, Lambas, Diego García

“…Inspired by the well-known dynamical dichotomy predicted in voids, where some underdense regions expand whereas others collapse due to overdense surrounding…”
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Local and global environmental effects on galaxies and active galactic nuclei by Padilla, Nelson, Lambas, Diego García, González, Roberto

“…We study the properties of Sloan Digital Sky Survey (SDSS) galaxies with and without active galactic nucleus (AGN) detection as a function of the local and…”
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Compact Groups analysis using weak gravitational lensing II: CFHT Stripe 82 data by Chalela, Martín, Gonzalez, Elizabeth Johana, Makler, Martín, García Lambas, Diego, Pereira, Maria E S, O’Mill, Ana Laura, Shan, HuanYuan

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Radio galaxies in the Sloan Digital Sky Survey: spectral index–environment correlations by Bornancini, Carlos G., O’Mill, Ana Laura, Gurovich, Sebastián, Lambas, Diego García

“…We analyse optical and radio properties of radio galaxies detected in the Sloan Digital Sky Survey. The sample of radio sources is selected from the catalogue…”
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The impact of void environment on AGN by Ceccarelli, Laura, Duplancic, Fernanda, Garcia Lambas, Diego

“…ABSTRACT We study the population of active galaxies in void environment in the Sloan Digital Sky Survey. We use optical spectroscopic information to analyse…”
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Clues on void evolution–II. Measuring density and velocity profiles on SDSS galaxy redshift space distortions by Paz, Dante, Lares, Marcelo, Ceccarelli, Laura, Padilla, Nelson, Lambas, Diego García

“…Using the redshift space distortions of void-galaxy cross-correlation function we analyse the dynamics of voids embedded in different environments. We compute…”
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Evolution of environment-dependent galaxy properties in the Sloan Digital Sky Survey by O'Mill, Ana Laura, Padilla, Nelson, Lambas, Diego García

“…We use photometric redshifts to analyse the effect of local environment on galaxy colours at redshifts z≲ 0.63 in the Sloan Digital Sky Survey (SDSS) data…”
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A CMB lensing analysis of the extended mass distribution of clusters by Toscano, Facundo, Luparello, Heliana, Gonzalez, Elizabeth Johana, Lambas, Diego Garcia

“…ABSTRACT The aim of this work is to study the anisotropic weak lensing signal associated with the mass distribution of massive clusters of galaxies using the…”
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Satellites and central galaxies in SDSS: the influence of interactions on their properties by Mesa, Valeria, Alonso, Sol, Coldwell, Georgina, Lambas, Diego García, Nilo Castellon, J L

“…ABSTRACT We use SDSS-DR14 to construct a sample of galaxy systems consisting of a central object and two satellites. We adopt projected distance and radial…”
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Brightest cluster galaxies: the centre can(not?) hold by De Propris, Roberto, West, Michael J, Andrade-Santos, Felipe, Ragone-Figueroa, Cinthia, Rasia, Elena, Forman, William, Jones, Christine, Kipper, Rain, Borgani, Stefano, Lambas, Diego García, Romashkova, Elena A, Patra, Kishore C

“…ABSTRACT We explore the persistence of the alignment of brightest cluster galaxies (BCGs) with their local environment. We find that a significant fraction of…”
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Accurate dark-matter halo elongation from weak-lensing stacking analysis by Gonzalez, Elizabeth J, Hoffmann, Kai, Gaztañaga, Enrique, García Lambas, Diego R, Fosalba, Pablo, Crocce, Martin, Castander, Francisco J, Makler, Martín

“…ABSTRACT Shape estimates that quantifying the halo anisotropic mass distribution are valuable parameters that provide information on their assembly process and…”
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The sparkling Universe: clustering of voids and void clumps by Lares, Marcelo, Ruiz, Andrés N., Luparello, Heliana E., Ceccarelli, Laura, Garcia Lambas, Diego, Paz, Dante J.

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On the weak-lensing masses of a new sample of galaxy groups by Gonzalez, Elizabeth J, Rodriguez, Facundo, Merchán, Manuel, García Lambas, Diego, Makler, Martín, Chalela, Martín, Pereira, Maria E S, Moraes, Bruno, Shan, HuanYuan

“…ABSTRACT Galaxy group masses are important to relate these systems with the dark matter halo hosts. However, deriving accurate mass estimates is particularly…”
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Compact group analysis using weak gravitational lensing by Chalela, Martín, Gonzalez, Elizabeth Johana, Garcia Lambas, Diego, Foëx, Gael

“…Abstract We present a weak lensing analysis of a sample of Sloan Digital Sky Survey compact groups (CGs). Using the measured radial density contrast profile,…”
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Triplets of quasars at high redshift – I. Photometric data by Alonso, M. Victoria, Coldwell, Georgina V., Söchting, Ilona, Bornancini, Carlos, Smith, Malcolm G., García Lambas, Diego, Rest, Armin

“…We have conducted an optical and infrared imaging in the neighbourhoods of four triplets of quasars. R, z′, J and Ks images were obtained with MOSAIC II and…”
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Voids and superstructures: correlations and induced large-scale velocity flows by Lares, Marcelo, Luparello, Heliana E., Maldonado, Victoria, Ruiz, Andrés N., Paz, Dante J., Ceccarelli, Laura, Garcia Lambas, Diego

“…Abstract The expanding complex pattern of filaments, walls and voids build the evolving cosmic web with material flowing from underdense on to high density…”
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