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We introduce the Hydrangea simulations, a suite of 24 cosmological hydrodynamic zoom-in simulations of massive galaxy clusters (M_200c = 10^14-10^15 M_Sun) with baryon particle masses of ~10^6 M_Sun. Designed to study the impact of the…

We present results from thirteen cosmological simulations that explore the parameter space of the "Evolution and Assembly of GaLaxies and their Environments" (EAGLE) simulation project. Four of the simulations follow the evolution of a…

We investigate the connection between the morphology and internal kinematics of the stellar component of central galaxies with mass $M_\star > {10}^{9.5} {\rm M}_\odot$ in the EAGLE simulations. We compare several kinematic diagnostics…

We investigate the environmental quenching of galaxies, especially those with stellar masses (M*)$<10^{9.5} M_\odot$, beyond the local universe. Essentially all local low-mass quenched galaxies (QGs) are believed to live close to massive…

Current explanation of the overabundance of dark matter subhalos in the Local Group (LG) indicates that there maybe a limit on mass of a halo, which can host a galaxy. This idea can be tested using voids in the distribution of galaxies: at…

Astrophysics · Physics 2015-05-13 Anton Tikhonov , Anatoly Klypin

We study the prevalence of thin galaxies as a function of stellar mass in the range $10^7 < M_{\star} / \rm{M_\odot} < 10^{11}$ using data from the GAMA, DESI, ALFALFA, and Nearby Galaxy catalogs. We use the distribution of projected axis…

We explore the circumgalactic metal content traced by commonly observed low ion absorbers, including C II, Si II, Si III, Si IV, and Mg II. We use a set of cosmological hydrodynamical zoom simulations run with the EAGLE model and including…

Astrophysics of Galaxies · Physics 2018-08-29 Benjamin D. Oppenheimer , Joop Schaye , Robert A. Crain , Jessica K. Werk , Alexander J. Richings

Current explanation of the overabundance of dark matter subhalos in the Local Group (LG) indicates that there maybe a limit on mass of a halo, which can host a galaxy. This idea can be tested using voids in the distribution of galaxies: at…

Astrophysics · Physics 2009-11-13 Anton V. Tikhonov , Anatoly A. Klypin

We investigate the properties of voids and void galaxies in the \texttt{TNG300} simulation. Using a luminous galaxy catalog and a spherical void finding algorithm, we identify 5,078 voids at redshift $z = 0$. Within the voids, mass does not…

Astrophysics of Galaxies · Physics 2024-01-05 Olivia Curtis , Bryanne McDonough , Tereasa G. Brainerd

We investigate the variations in galaxy occupancy of the dark matter haloes with the large-scale environment and halo formation time, using two state-of-the-art hydrodynamical cosmological simulations, EAGLE and Illustris. For both…

Astrophysics of Galaxies · Physics 2018-08-15 M. Celeste Artale , Idit Zehavi , Sergio Contreras , Peder Norberg

We present an analysis of the quenching of local observed and simulated galaxies, including an investigation of the dependence of quiescence on both intrinsic and environmental parameters. We apply an advanced machine learning technique…

Astrophysics of Galaxies · Physics 2024-01-24 Paul H. Goubert , Asa F. L. Bluck , Joanna M. Piotrowska , Roberto Maiolino

The inflow of cosmological gas onto haloes, while challenging to directly observe and quantify, plays a fundamental role in the baryon cycle of galaxies. Using the EAGLE suite of hydrodynamical simulations, we present a thorough exploration…

Astrophysics of Galaxies · Physics 2021-04-28 Ruby J. Wright , Claudia del P. Lagos , Chris Power , Camila A. Correa

Voids possess a very complex internal structure and dynamics. Using $N$-body simulations we study the hierarchical nature of sub-structures present in the cosmic web (CW). We use the SpineWeb method which provides a complete…

Astrophysics of Galaxies · Physics 2025-02-25 Mariana Jaber , Marius Peper , Wojciech A. Hellwing , Miguel Angel Aragon-Calvo , Octavio Valenzuela

We use the EAGLE simulations to study the oxygen abundance gradients of gas discs in galaxies within the stellar mass range [10^9.5, 10^10.8]Mo at z=0. The estimated median oxygen gradient is -0.011 (0.002) dex kpc^-1, which is shallower…

Voids represent a unique environment for the study of galaxy evolution, as the lower density environment is expected to result in shorter merger histories and slower evolution of galaxies. This provides an ideal opportunity to test theories…

This work analyses the properties of groups of galaxies in the surroundings of clusters. On the basis of a very large public Virgo Consortium Simulation, we identified systems of galaxies in a wide range of masses. Systems with masses…

Astrophysics · Physics 2009-11-10 C. J. Ragone , M. Merchan , H. Muriel , A. Zandivarez

We examine the quenching characteristics of $328$ isolated dwarf galaxies $\left(10^{8} < M_{\rm star}/M_\odot < 10^{10} \right)$ within the \Rom{} cosmological hydrodynamic simulation. Using mock observation methods, we identify isolated…

Astrophysics of Galaxies · Physics 2022-11-11 Ray S. Sharma , Alyson M. Brooks , Michael Tremmel , Jillian Bellovary , Thomas R. Quinn

Cosmological hydrodynamical simulations are studied in order to analyse generic trends for the stellar, baryonic and halo mass assembly of low-mass galaxies (M_* < 3 x 10^10 M_sun) as a function of their present halo mass, in the context of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Maria E. De Rossi , Vladimir Avila-Reese , Patricia B. Tissera , Alejandro Gonzalez-Samaniego , Susana Pedrosa

We explore the mass content of galaxies residing in galaxy clusters at z=0 in the EAGLE hydrodynamical simulation as well as the galaxies' mass build-up through cosmic time. We use a galaxy catalogue generated with the HBT+ algorithm, which…

Astrophysics of Galaxies · Physics 2024-06-12 Cristóbal Sifón , Jiaxin Han

Using the EAGLE suite of simulations, we demonstrate that both cold gas stripping {\it and} starvation of gas inflow play an important role in quenching satellite galaxies across a range of stellar and halo masses, $M_{\star}$ and…

Astrophysics of Galaxies · Physics 2022-08-03 Ruby J. Wright , Claudia del P. Lagos , Chris Power , Adam R. H. Stevens , Luca Cortese , Rhys J. J. Poulton