ABSTRACT We present two-dimensional hydrodynamical simulations for the evolution of early-type galaxies containing central massive black holes (MBHs), starting at an age <?CDATA $\simeq 2\,\mathrm{Gyr}$?> . The code contains accurate and physically consistent radiative mechanical active galactic nucleus (AGN) wind feedback, with parsec-scale resolution. Mass input comes from stellar evolution; energy includes Type Ia (SNIa) II supernovae heating; star formation (SF) is included. Realistic,...

Black holes (BHs) are believed to be a key ingredient of galaxy formation. However, the galaxy-BH interplay is challenging study due large dynamical range and complex physics involved. As consequence, hydrodynamical cosmological simulations normally adopt sub-grid models track unresolved physical processes, in particular BH accretion; usually spatial scale where dominates processes (the Bondi radius) unresolved, an approximate Bondi-Hoyle accretion rate used estimate growth BH. By comparing...

Abstract Cosmological hydrodynamical simulations provide valuable insights on galaxy evolution when coupled with observational data. Comparisons real galaxies are typically performed via scaling relations of the observables. Here we follow an alternative approach based spectral covariance in a model-independent way. We build upon previous work by Sharbaf et al. that studied high quality SDSS continuum-subtracted spectra relatively narrow range velocity dispersion (σ ∈ [100, 150] km s−1)....

By means of high-resolution 2D hydrodynamical simulations, we study the evolution hot interstellar medium (ISM) for a large set early-type galaxy models, characterized by various degrees flattening and internal rotation. The galaxies are described state-of-the-art axisymmetric two-component tailored to reproduce real systems; dark matter haloes follow Navarro–Frenk–White or Einasto profile. gas is produced evolving stars, heated Type Ia supernovae. We find that, in general, rotation field...

Abstract A recent determination of the relationships between X-ray luminosity ISM ( L X ) and stellar total mass for a sample nearby early-type galaxies (ETGs) is used to investigate origin hot gas, via comparison with results hydrodynamical simulations evolution large set isolated ETGs. After epoch major galaxy formation (after z ≃ 2), replenished by losses SN ejecta, at rate predicted evolution, depleted star formation; it heated thermalization motions, SNe explosions, mechanical (from...

We have developed a new tool to analyse galaxies in the EAGLE simulations as close possible observations.We investigated evolution of their kinematic properties by means angular momentum proxy parameter,$ \lambda_{Re} $for with $M_{*} \ge 5 \times 10^{9} M_{\odot}$ RefL0100N1504 simulation up redshift two (z = 2). Galaxies show wide variety features, similiar those found integral-field spectroscopic studies. At z=0 distribution ${\lambda}_{Re}-{\epsilon}$ plane is also good agreement results...

Past observational and numerical studies indicated that the hot gaseous haloes of early-type galaxies may be sensitive to stellar kinematics. With high-resolution zeus 2D hydrosimulations, we study gas evolution in flat fixed (stellar plus dark) mass distribution, but with variable amounts azimuthal velocity dispersion rotational support, including possibility a (counter) rotating inner disc. The is fed by mass-losses, heated supernova explosions thermalization motions. simulations provide...

High-resolution 2D hydrodynamical simulations describing the evolution of hot interstellar medium (ISM) in axisymmetric two-component models early-type galaxies well reproduced observed trends X-ray luminosity (LX) and temperature (TX) with galaxy shape rotation, however they also revealed formation an exceedingly massive cooled gas disc rotating systems. In a follow-up this study, here we investigate effects star disc, including consequent injection mass, momentum energy pre-existing ISM....

ABSTRACT Dwarfs are the largest population of galaxies in number nearby Universe. Deep spectroscopic data still missing to obtain a better understanding their formation and evolution processes. This study shows results obtained from campaign Perseus cluster. We have 963 new galaxy spectra. measured recessional velocity by using cross-correlation technique. These been used cluster membership, dynamics galaxies, luminosity function (LF) The membership was peak + gap technique, reporting total...

We test cosmological hydrodynamical simulations of galaxy formation regarding the properties Blue Cloud (BC), Green Valley (GV) and Red Sequence (RS), as measured on 4000$\small{ \mathring {\mathrm A}}$ break strength vs stellar mass plane at $z=0.1$. analyse RefL0100N1504 run EAGLE TNG100 IllustrisTNG project, by comparing them with Sloan Digital Sky Survey, while taking into account selection bias. Our analysis focuses GV, within $\log\,\mathrm{M_\star/M_{\odot}} \simeq 10-11$, selected...

With 2D hydrodynamical simulations, we study the evolution of hot gas flows in early-type galaxies, focussing on effects galaxy rotation thermal and dynamical status ISM. The is modelled as a two-component axisymmetric system (stars dark matter), with variable amount azimuthal velocity dispersion rotational support; presence counter rotating stellar disk also considered. It found that ISM rotationally supported (isotropic) model more prone to instabilities than fully counterpart, while its...

Context. The concentration-virial mass (c-M) relation is a fundamental scaling within the standard cold dark matter (ΛCDM) framework well established in numerical simulations. However, observational constraints of this are hampered by difficulty characterising properties haloes. Recent comparisons between simulations and observations have suggested systematic difference c-M relation, with higher concentrations latter. Aims. In work, we undertake detailed simulated galaxies sample...

Cosmological hydrodynamical simulations provide valuable insights on galaxy evolution when coupled with observational data. Comparisons real galaxies are typically performed via scaling relations of model fitting. Here we follow an alternative approach based the spectral variance in a model-independent way. We build upon work presented Sharbaf et al. (2023) that studied covariance high quality SDSS continuum-subtracted spectra relatively narrow range velocity dispersion (100-150 km/s). same...

ABSTRACT The concentration – virial mass relation is a well-defined trend that reflects the formation of structure in an expanding universe. Numerical simulations reveal marked correlation depends on collapse time dark matter haloes and their subsequent assembly history. However, observational constraints are mostly limited to massive end via X-ray emission hot diffuse gas clusters. An alternative approach, based gravitational lensing over galaxy scales, revealed intriguingly high at Milky...

Abstract AGN feedback from supermassive black holes (SMBHs) at the center of early type galaxies is commonly invoked as explanation for quenching star formation in these systems. The situation complicated by significant amount mass injected galaxy evolving stellar population over cosmological times. In absence feedback, this would lead to unobserved galactic cooling flows, and SMBHs two orders magnitude more massive than observed. By using high-resolution 2D hydrodynamical simulations with...

Abstract In the last decade observations have been able to probe evolution of galaxy luminosity function, in particular showing a variation its faint-end with redshift. We employ data Cluster-EAGLE project, set cosmological, hydrodynamical zoom-in simulations 30 clusters, study luminostity functions clusters compile catalogue simulated galaxies’ luminosities SDSS bands using E-MILES spectra database, and taking into account dust attenuation. Stacked present little redshift slope from z=3.5...

ABSTRACT We computed the luminosity of simulated galaxies c-eagle project, a suite 30 high-resolution zoom-in simulations galaxy clusters based on eagle simulation. The AB magnitudes are derived for different spectral bands, from ultraviolet to infrared, using simple stellar population modelling E-MILES spectra library. take into account obscuration due dust in star forming regions and diffuse interstellar medium. g − r colour–stellar mass diagram, at z = 0.1, presents defined red sequence,...

AGN feedback from supermassive black holes (SMBHs) at the center of early type galaxies is commonly invoked as explanation for quenching star formation in these systems. The situation complicated by significant amount mass injected galaxy evolving stellar population over cosmological times. In absence feedback, this would lead to unobserved galactic cooling flows, and SMBHs two orders magnitude more massive than observed. By using high-resolution 2D hydrodynamical simulations with radiative...

Early-type galaxies (ETGs) host a hot ISM produced mainly by stellar winds, and heated Type Ia supernovae the thermalization of motions. High resolution 2D hydrodynamical simulations showed that ordered rotation in component results formation centrifugally supported cold equatorial disc. In recent numerical investigation we found subsequent generations stars are formed this disc; process consumes most gas, leaving at present epoch masses comparable to those observed. Most new mass few Gyrs...

Abstract Early-type galaxies (ETGs) host a hot ISM produced mainly by stellar winds, and heated Type Ia supernovae the thermalization of motions. High resolution 2D hydrodynamical simulations showed that ordered rotation in component results formation centrifugally supported cold equatorial disc. In recent numerical investigation we found subsequent generations stars are formed this disc; process consumes most gas, leaving at present epoch masses comparable to those observed. Most new mass...