Browsing Observatorio Astronómico de Córdoba by Language "eng"
Now showing items 1-20 of 27
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Abundance analysis of planet-hosting and debris-disk stars
(Publishing house "Pero", 2014) -
Active galactic nuclei and gravitational redshifts
(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 ... -
Age and Metallicity Analysis of the Small Magellanic Cloud from Star Clusters
(2013)We present metallicities for 15 Small Magellanic Cloud (SMC) star clusters. We add to this information the ages and metallicities of 15 additional star clusters previously studied by Parisi et al. (2009) and Parisi et al. ... -
Anisotropic halo model
(2013-07-21)In the present work, we extend the classic halo model for the large-scale matter distribution including a triaxial model for the halo profiles and their alignments. In particular, we derive general expressions for the ... -
Backsplash Galaxies
(, 2014) -
The brightest group galaxies and their large-scale environment
(Asociación Argentina de Astronomía, 2015)We use a sample of galaxy groups in SDSS data to study their brightestgalaxies (BGG), separating groups according to their large scale environment. The statistical properties of the BGG depend on the surrounding environment ... -
Characterizing HOD in filaments and nodes of the cosmic web
(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
(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 ... -
Determination of fundamental astrophysical properties of poorly known galactic open clusters from Washington photometry
(Astronomical Society of the Pacific, 2015) -
Dynamical friction and evolution of black holes in cosmological simulations: a new implementation in OpenGadget3
(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 ... -
Effects of superstructure environment on galaxy groups
(Oxford University Press, 2013-06-21)We analyse properties of galaxy groups and their dependence on the large-scale environment as defined by superstructures. We find that group–galaxy cross–correlations depend only on group properties regardless the groups ... -
Environment and properties of obscured and unobscured active galactic nuclei
(Asociación Argentina de Astronomía, 2013)We analyze the properties of obscured and unobscured active galactic nuclei selected using mid-infrared colors in the redshift range 1 < z < 3. We find that obscured objects are located in a denser local galaxy environment ... -
Galaxies in the zone of avoidance: Misclassifications using machine learning tools
(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
(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
(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 ...