Browsing Artículos by Title

Now showing items 1-8 of 8

    • Active galactic nuclei and gravitational redshifts 

      Padilla, Nelson; Carneiro, Saulo; Chaves-Montero, Jonás; Donzelli, Carlos Jose; Pigozzo, Cassio; Colazo, Patricio; Alcaniz, Jailson (2024-03-13)
      Context. Gravitational redshift is a classical effect of General Relativity. It has been measured in stars, quasars, and clusters of galaxies. Aims. We identify the signature of gravitational redshift in the emission ...

    • Characterizing HOD in filaments and nodes of the cosmic web 

      Perez, Noelia Rocio; Pereyra, Luis A.; Coldwell, Georgina; Facundo, Rodriguez; Alfaro, Ignacio Germán.; Ruiz, Andrés Nicolás (Oxford University Press, 2024-02-02)
      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, ...

    • Compact groups from semi-analytical models of galaxy formation – V. Their assembly channels as a function of the environment 

      Taverna, Maria Antonela; Diaz-Gimenez, Eugenia; Zandivarez, Ariel; Martínez, Héctor Julián; Ruiz, Andrés Nicolás (2023-11-15)
      We delved into the assembly pathways and environments of compact groups (CGs) of galaxies using mock catalogues generated from semi-analytical models (SAMs) on the Millennium simulation. We investigate the ability of SAMs ...

    • Dynamical friction and evolution of black holes in cosmological simulations: a new implementation in OpenGadget3 

      Damiano, Alice; Valentini, Milena; Borgani, Stefano; Tornatore, Luca; Murante, Giuseppe; Ragagnin, Antonio; Ragone-Figueroa, Cinthia; Dolag, Klaus (2024-03-19)
      We implement a sub-resolution prescription for the unresolved dynamical friction onto black holes (BHs) in the OpenGadget3 code. We carry out cosmological simulations of a volume of 16 cMpc3 and zoom-ins of a galaxy group ...

    • Galaxies in the zone of avoidance: Misclassifications using machine learning tools 

      Pamela, Marchant Cortés; Nilo Castellón, José Luis; Alonso, Maria Victoria; Baravalle, Laura; Villalon, Carolina; Sgró, Mario Agustín; Daza Perilla, Ingrid Vanessa; Soto, Mario; Milla Castro, Fernanda; Minniti, Dante; Masetti, Nicola; Valotto, Carlos; Lares, Marcelo (2024-05-24)
      Context. Automated methods for classifying extragalactic objects in large surveys offer significant advantages compared to manual approaches in terms of efficiency and consistency. However, the existence of the Galactic ...

    • Galaxy evolution in compact groups II. Witnessing the influence of major structures in their evolution 

      Parado Montaguth, Gissel Dayana; Antonela, Monachesi; Sergio, Torres-Flores; Gomez, Facundo Ariel; Ciria, Lima-Dias; Claudia, Mendes de Oliveira; Eduardo, Telles; Marco, Grossi; Augusto Lopes, Paulo Afrânio; O’Mill, Ana Laura; Hernandez-Jimenez, Jose A.; Olave-Rojas, Daniela E.; Ricardo, Demarco; Antonio, Kanaan; Tiago, Ribeiro; William, Schoenell; Cortesi, Arianna; Swayamtrupta, Panda (2024-06-24)
      Compact groups (CGs) of galaxies are an extreme environment for the morphological transformations and the cessation of star formation in galaxies. However, despite initially being conceived as isolated systems, it is now ...

    • Impact of Primordial Black Hole Dark Matter on Gas Properties at Very High Redshift: A Semi-Analytical Model 

      Casanueva-Villarreal, Catalina; Tissera, Patricia Beatriz; Padilla, Nelson; Liu, Boyuan; Bromm, Volker; Pedrosa, Susana; Bignone, Lucas Axel; Dominguez Tenreiro, Rosa Maria (2024-05-03)
      Context. Primordial black holes (PBHs) have been proposed as potential candidates for dark matter (DM) and have garnered significant attention in recent years. Aims. Our objective is to delve into the distinct impact of ...

    • Resonant chains in triple-planetary systems 

      Wang, Xuefeng; Zhou, Li-Yong; Beaugé, Cristian (2024-05-08)
      A resonant chain may be formed in a multi-planetary system when ratios of the orbital periods can be expressed as ratios of small integers T1:T2:⋯:TN=k1:k2:⋯:kN. We investigate the dynamics and possible formation of resonant ...