We present cosmological zoom-in hydro-dynamical simulations for the formation of disc galaxies, implementing dust evolution and promoted cooling hot gas. couple an improved version our previous treatment evolution, which adopts two-size approximation to estimate grain size distribution, with MUPPI star feedback sub-resolution model. Our model follows carbon silicate separately. To distinguish differences induced by chaotic behaviour from those genuinely due different simulation set-up, we...

In this paper, we use photometric data from the S-PLUS DR4 survey to identify isolated galaxy pairs and analyse their characteristics properties. Our results align with previous spectroscopic studies, particularly in luminosity function parameters, suggesting a consistent trait among systems. findings reveal high fraction of red galaxies across all samples, irrespective projected distance, velocity difference, or ratio. We found that proximity neighbour its central influences colour due...

ABSTRACT Although compact groups (CGs) of galaxies have been envisioned as isolated extremely dense structures in the Universe, it is accepted today that many them could be not thought. In this work, we study Hickson-like CGs identified Sloan Digital Sky Survey Data Release 16 to analyse these systems and their when embedded different cosmological structures. To achieve goal, identify several where can reside: nodes filaments, loose groups, cosmic voids. Our results indicate 45 per cent do...

Historically, compact group catalogues vary not only in their identification algorithms and selection functions, but also photometric bands. Differences between have been reported. However, it is difficult to assess the impact of band these differences given variety algorithms. We used mock light cone built by Henriques et al. identify compare groups three different bands: K, r u. applied same functions bands, found that u look smallest projection, difference two brightest galaxies largest K...

Many catalogues of isolated compact groups galaxies (CGs) have been extracted using Hickson's criteria to identify isolated, dense systems galaxies, with at least three or four concordant in magnitude and redshift. But is not clear what extent the CGs are complete reliable, relative 3D truly groups. Using five different semi-analytical models galaxy formation (SAMs), we real space, containing galaxies. We then build mock redshift space run a Hickson-like CG finder. find that algorithm poor...

Mapping galaxies at low Galactic latitudes and determining their clustering status are fundamental steps in defining the large-scale structure nearby Universe. The VVV Near-IR Galaxy Catalogue (VVV NIRGC) allows us to explore this region great detail. Our goal is identify galaxy overdensities characterize Zone of Avoidance. We use different algorithms overdensities: Voronoi tessellations, Minimum Spanning Tree Ordering Points To Identify Clustering Structure. studied membership, isolation,...

ABSTRACT Compact groups (CGs) of galaxies are defined as isolated and dense galaxy systems that appear to be a unique site multiple interactions. Semi-analytical models (SAMs) formation prime tool understand CGs. We investigate how the frequency 3D nature CGs depends on SAM its underlying cosmological parameters. Extracting nine light-cones from five different SAMs selecting in observed samples, we find strongly Moving WMAP1 WMAP7 Planck cosmologies (increasing density Universe decreasing...

In this work we present an algorithm to identify compact groups (CGs) that closely follows Hickson's original aim and improves the completeness of samples obtained from redshift surveys. Instead identifying CGs in projection first then checking a velocity concordance criterion, them directly space using Hickson-like criteria. The methodology was tested on mock lightcone galaxies built outputs recent semi-analytic model galaxy formation run top Millennium Simulation I after scaling represent...

ABSTRACT Compact groups of galaxies are devised as extreme environments where interactions may drive galaxy evolution. In this work, we analysed whether the luminosities inhabiting compact differ from those in loose groups. We computed luminosity functions populations a new sample 1412 Hickson-like identified Sloan Digital Sky Survey Data Release 16. observed characteristic absolute magnitude for brighter than that field or systems. also deficiency faint comparison with Our analysis showed...

Context. Several compact group catalogues have been constructed over the years using different methods, but most of them are not deep enough to go beyond very local Universe with a high level redshift completeness. Aims. We build statistically reliable sample groups study influence its inner extreme environment at intermediate redshifts. Methods. adopted Galaxy And Mass Assembly (GAMA) survey as parent galaxy catalogue, complemented small galaxies from Sloan Digital Sky Survey, identify...

[Abridged] Over the years, several compact group catalogues have been built using different methods, but most of them are not deep enough to go beyond very local universe with a high level redshift completeness. We build statistically reliable samples groups study influence their inner extreme environment at intermediate redshifts. adopted GAMA survey as parent catalogue, complemented galaxies from SDSS, identify Hickson-like criteria. explored parameter space perform identifications: we...

Galaxy formation is intrinsically connected to the distinct evolutionary processes of disk and spheroidal systems, which are fundamental stellar components galaxies. Understanding mutual dynamical interplay co-evolution these requires a detailed analysis allow for disentanglement between them. We introduce JEHistogram, new method decomposition simulated galaxies into components, utilizing angular momentum energy star particles. evaluate its performance against five previously established...

Although Compact Groups of galaxies (CGs) have been envisioned as isolated extremely dense structures in the Universe, it is accepted today that many them could be not thought. In this work, we study Hickson-like CGs identified Sloan Digital Sky Survey Data Release 16 to analyse these systems and their when embedded different cosmological structures. To achieve goal, identify several where can reside: Nodes filaments, Loose Groups, Filaments cosmic Voids. Our results indicate 45 per cent do...

ABSTRACT Using over 3000 compact groups (CGs) of galaxies extracted from mock catalogues built semi-analytical models (SAMs) galaxy formation, we study whether the CG assembly channel affects z = 0 properties and their evolution. The evolution with time is a clear function stellar masses. For instance, high-stellar-mass have lived last 8 Gyr little cold gas content while maintaining reservoir hot gas, low-mass still preserve some at present but they completely drained reservoir. Beyond that,...

Using over 3000 compact groups (CGs) of galaxies extracted from mock catalogues built semi-analytical models galaxy formation (SAMs), we study whether the CG assembly channel affects z=0 properties and their evolution. The evolution with time is a clear function stellar masses. For instance, high-stellar-mass have lived last 8 Gyr little cold gas content while maintaining reservoir hot gas, low-mass still preserve some at present but they completely drained reservoir. Beyond that, find that...

ABSTRACT We delved into the assembly pathways and environments of compact groups (CGs) galaxies using mock catalogues generated from semi-analytical models (SAMs) on Millennium simulation. investigate ability SAMs to replicate observed CG whether CGs with different histories tend inhabit specific cosmic environments. also analyse environment or history is more important in tailoring properties. find that about half are non-embedded systems, 40 per cent inhabiting loose nodes filaments, while...

We delved into the assembly pathways and environments of compact groups (CGs) galaxies using mock catalogues generated from semi-analytical models (SAMs) on Millennium simulation. investigate ability SAMs to replicate observed CG whether CGs with different histories tend inhabit specific cosmic environments. also analyse environment or history is more important in tailoring properties. find that about half are non-embedded systems, 40% inhabiting loose nodes filaments, while rest distribute...