Zobrazeno 1 - 10
of 715
pro vyhledávání: '"Pereyra, Luis A"'
Autor:
Perez, Noelia R., Pereyra, Luis A., Coldwell, Georgina, Rodriguez, Ignacio G. Alfaro Facundo, Ruiz, Andrés N.
We study the evolution of the Halo Occupation Distribution (HOD) and galaxy properties of nodes and filamentary structures obtained by \textsc{DisPerSE} from the \textsc{Illustris TNG300-1} hydrodynamical simulation, in the redshift range $0 \leq z \
Externí odkaz:
http://arxiv.org/abs/2405.01671
Autor:
Perez, Noelia R., Pereyra, Luis A., Coldwell, Georgina, Rodriguez, Facundo, Alfaro, Ignacio G., Ruiz, Andrés N.
The standard paradigm for the formation of the Universe suggests that large structures are formed from hierarchical clustering by the continuous accretion of less massive galaxy systems through filaments. In this context, filamentary structures play
Externí odkaz:
http://arxiv.org/abs/2310.19928
Autor:
Duplancic, Fernanda, Alonso, Sol, Coldwell, Georgina, Galdeano, Daniela, Minniti, Dante, Fernandez, Julia, Mesa, Valeria, Perez, Noelia, Pereyra, Luis, Pavesich, Franco
Context. The location of the Solar System constrains the detection of extragalactic sources beyond the Milky Way(MW) plane. The optical observations are hampered in the so--called Zone of Avoidance (ZOA) where stellar crowding and Galactic absorption
Externí odkaz:
http://arxiv.org/abs/2310.13156
Autor:
Gonzalez, Elizabeth Johana, Rodriguez-Medrano, Agustín, Pereyra, Luis Alberto, Lambas, Diego García
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 through the introduction of a self-scattering cross-section. However, the ob
Externí odkaz:
http://arxiv.org/abs/2308.13461
Autor:
Salerno, Juan Manuel, Muriel, Hernán, Coenda, Valeria, Cora, Sofía A., Pereyra, Luis, Ruiz, Andrés N., Vega-Martínez, Cristian A.
We analyse the connection between the star formation quenching of galaxies and their location in theoutskirts of clusters in the redshift range $z=[0,2]$ by estimating the fraction of red galaxies. More specifically, we focus on galaxies that infall
Externí odkaz:
http://arxiv.org/abs/2210.09300
Autor:
Galdeano, Daniela, Pereyra, Luis, Duplancic, Fernanda, Coldwell, Georgina, Alonso, Sol, Ruiz, Andrés N., Cora, Sofía A., Perez, Noelia, Vega-Martínez, Cristian, Minniti, Dante
We studied a region of 1.636 square degrees corresponding to the VVV tile $b204$. Using SExtractor, we analysed photometric data generating a catalogue of extended sources in this area. In order to confirm these sources as galaxy candidates we visual
Externí odkaz:
http://arxiv.org/abs/2103.01865
Autor:
Chalela, Martin, Sillero, Emanuel, Pereyra, Luis, García, Mario Alejandro, Cabral, Juan B., Lares, Marcelo, Merchán, Manuel
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 grid, with optional periodic conditions, providing a fast approach for n
Externí odkaz:
http://arxiv.org/abs/1912.09585
Autor:
González-Montaña, José-Ramiro, Martín-Alonso, María-José, Cal-Pereyra, Luis G., Benech, Alejandro, Escalera-Valente, Francisco, Alonso-Diez, Ángel J.
Publikováno v:
In Small Ruminant Research November 2023 228
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 Mart\'inez et al. We analyse how different identification techniques
Externí odkaz:
http://arxiv.org/abs/1911.08545
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 density field defined by dark matter halos with masses $M \, \ge 10^{14}\, h
Externí odkaz:
http://arxiv.org/abs/1911.06768