A5011490726- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Science, Technology, and Education in Latin America
- International Relations in Latin America
- Astrophysics and Cosmic Phenomena
- Cosmology and Gravitation Theories
- CCD and CMOS Imaging Sensors
- Radio Astronomy Observations and Technology
- Sociology, Governance, and Technology
- Scientific Research and Discoveries
Consejo Nacional de Investigaciones Científicas y Técnicas
2018-2022
Instituto de Astrofísica de La Plata
2018-2022
Universidad Nacional de La Plata
2018-2022
We present results from the semi-analytic model of galaxy formation SAG applied on MultiDark simulation MDPL2. features an updated supernova (SN) feedback scheme and a robust modelling environmental effects satellite galaxies. This incorporates gradual starvation hot gas halo driven by action ram pressure stripping (RPS), that can affect cold disc, tidal (TS), which act all baryonic components. Galaxy orbits orphan satellites are integrated providing adequate positions velocities for...
Next-generation photometric and spectroscopic surveys will detect faint galaxies in massive clusters, advancing our understanding of galaxy formation dense environments. Comparing these observations with theoretical models requires high-resolution cluster simulations. Hydrodynamical simulations effectively resolve properties halos; however, they face challenges simulating low-mass within clusters due to computational limitations. On the other hand, dark matter-only (DMO) can provide higher...
The environment within dark matter haloes can quench the star formation of galaxies. However, environmental effects beyond virial radius ($\gtrsim$ 1 Mpc) are less evident. An example is debated correlation between colour or in central galaxies and neighbour adjacent at large separations several Mpc, referred to as two-halo galactic conformity. We use two galaxy catalogues generated from different versions semi-analytic model SAG applied MDPL2 cosmological simulation IllustrisTNG300...
We use the semi-analytic model of galaxy formation SAG to study relevance mass and environmental quenching on satellite galaxies. find that processes dominate star (SF) low-mass satellites ($M_{\star} \lesssim 10^{10.5}\, {\rm M}_{\odot}$), whereas high-mass galaxies typically quench as centrals. High-mass remain actively forming stars while being accreted are found be mainly affected by after their first infall. For a given stellar mass, our predicts SF less efficient in haloes both before...
We explore the buildup of quiescent galaxies using a sample 28,469 massive ($M_\star \ge 10^{11}$M$_\odot$) at redshifts $1.5<z<3.0$, drawn from 17.5 deg$^2$ area (0.33 Gpc$^3$ comoving volume these redshifts). This allows for robust study fraction as function mass $1.5<z<3.0$ with $\sim$40 times larger log($M_{\star}$/$\rm M_{\odot}$)$\ge11.5$ than previous studies. derive three methods: specific star-formation rate, distance main sequence, and UVJ color-color selection. All methods give...
In this work, we combine the semi-analytic model of galaxy formation and evolution SAG with $102$ relaxed simulated clusters from The Three Hundred project, study link between quenching star (SF) physical processes that galaxies experience through their dynamical history in around clusters. We classify four populations based on orbital history: recent ancient infallers, backsplash neighbouring galaxies. find $\sim 85$ per cent current population quenched located inside are infallers low or...
We present a new analytic fitting profile to model the ram pressure exerted over satellite galaxies on different environments and epochs. The is built using information of gas particle distribution in hydrodynamical simulations groups clusters measure directly. show that predictions obtained by previously introduced $\beta$-profile can not consistently reproduce dependence halocentric distance redshift for given halo mass. It features systematic underestimation predicted at high redshifts...
Desde la década de 1940 a actualidad, el desarrollo tecnológico nacional en materia aeroespacial ha tenido múltiples avances y retrocesos. Este trabajo intenta exponer las distintas visiones sus protagonistas los diferentes momentos históricos, consecuencias matriz nacional. Por su trascendencia tanto plano comercial como militar, tecnología se ve atravesada por intereses que impactan fuertemente sector. Para caracterizar distintos períodos nos centramos manera dispone sistema...
The presence of neutral hydrogen in the inter-stellar medium (ISM) and inter-galactic (IGM) induces radiative transfer (RT) effects on Ly{\alpha} photons which affect observability emitters (LAEs). We use GALFORM semi-analytic model galaxy formation evolution to analyse how these shape spatial distribution LAEs with respect H{\alpha} (HAEs) around high density regions at redshift. find that when a large sample protoclusters is considered, HAEs showing also emission (HAEs+LAEs) populate same...