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相关论文: Small-scale galaxy clustering in the EAGLE simulat…

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The new generation of upcoming deep photometric and spectroscopic surveys will allow us to measure the astrophysical properties of faint galaxies in massive clusters. This would demand to produce simulations of galaxy clusters with better…

星系天体物理 · 物理学 2024-10-29 Jonathan S. Gómez , Gustavo Yepes , A. Jiménez Muñoz , Weiguang Cui

We investigate how a property of a galaxy correlates most tightly with a property of its host dark matter halo, using state-of-the-art hydrodynamical simulations of galaxy formation EAGLE, Illustris, and IllustrisTNG. Unlike most of the…

宇宙学与河外天体物理 · 物理学 2020-03-11 Jian-hua He

In this paper we present data from 72 low redshift, hard X-ray selected AGN taken from the {\it Swift}-BAT 58 month catalogue. We utilise spectral energy distribution fitting to the optical to IR photometry in order to estimate host galaxy…

星系天体物理 · 物理学 2020-08-13 Thomas M. Jackson , D. J. Rosario , D. M. Alexander , J. Scholtz , Stuart McAlpine , R. G. Bower

Intrinsic alignments of galaxies are a significant astrophysical systematic affecting cosmological constraints from weak gravitational lensing. Obtaining numerical predictions from hydrodynamical simulations of expected survey volumes is…

We use the Millennium Simulation, a 10 billion particle simulation of the growth of cosmic structure, to construct a new model of galaxy clustering. We adopt a methodology that falls midway between the traditional semi-analytic approach and…

天体物理学 · 物理学 2009-11-11 Lan Wang , Cheng Li , Guinevere Kauffmann , Gabriella De Lucia

Cumulative number density matching of galaxies is a method to observationally connect descendent galaxies to their typical main progenitors at higher redshifts and thereby to assess the evolution of galaxy properties. The accuracy of this…

星系天体物理 · 物理学 2016-09-07 Bart Clauwens , Marijn Franx , Joop Schaye

We extend our previous work focused at $z\sim0$, studying the redshift evolution of galaxy dynamical properties using the state-of-the-art semi-analytic model GAEA: we show that the predicted size-mass relation for disky/star forming and…

星系天体物理 · 物理学 2019-06-26 Anna Zoldan , Gabriella De Lucia , Lizhi Xie , Fabio Fontanot , Michaela Hirschmann

We study the optical morphology of galaxies in a large-scale hydrodynamic cosmological simulation, the EAGLE simulation. Galaxy morphologies were characterized using non-parametric statistics (Gini, $M_{20}$, Concentration and Asymmetry)…

We develop an extension of subhalo abundance matching (SHAM) capable of accurately reproducing the real and redshift-space clustering of galaxies in a state-of-the-art hydrodynamical simulation. Our method uses a low-resolution gravity-only…

宇宙学与河外天体物理 · 物理学 2021-09-22 Sergio Contreras , Raul Angulo , Matteo Zennaro

We investigate the disc-halo connection in massive (Mstar/Msun>5e10) disc galaxies from the cosmological hydrodynamical simulations EAGLE and IllustrisTNG, and compare it with that inferred from the study of HI rotation curves in nearby…

星系天体物理 · 物理学 2020-08-19 A. Marasco , L. Posti , K. Oman , B. Famaey , G. Cresci , F. Fraternali

We examine the accretion and merger histories of central and satellite galaxies in a smoothed particle hydrodynamics (SPH) cosmological simulation that resolves galaxies down to 7e9 M[Sun]. Most friends-of-friends halos in the simulation…

天体物理学 · 物理学 2014-11-18 Vimal Simha , David H. Weinberg , Romeel Dave , Oleg Y. Gnedin , Neal Katz , Dusan Keres

We present a comparison between the observed galaxy stellar mass function and the one predicted from the De Lucia & Blaizot (2007) semi-analytic model applied to the Millennium Simulation, for cluster satellites and galaxies in the field…

星系天体物理 · 物理学 2015-06-19 B. Vulcani , G. De Lucia , B. M. Poggianti , K. Bundy , S. More , R. Calvi

Recent observations from integral field spectroscopy (IFS) indicate that the fraction of galaxies that are slow rotators, $F_{\rm SR}$, depends primarily on stellar mass, with no significant dependence on environment. We investigate these…

We present measurements of galactic outflow rates from the EAGLE suite of cosmological simulations. We find that gas is removed from the interstellar medium (ISM) of central galaxies with a dimensionless mass loading factor that scales…

星系天体物理 · 物理学 2020-04-15 Peter D. Mitchell , Joop Schaye , Richard G. Bower , Robert A. Crain

Current observational results show that both late-and-early-type galaxies follow tight mass-size planes, on which physical properties such as age, velocity dispersion and metallicities correlate with the scatter on the plane. We study the…

星系天体物理 · 物理学 2019-08-28 María Sol Rosito , Patricia Tissera , Susana Pedrosa , Claudia Lagos

Globular clusters (GCs) are sensitive tracers of galaxy assembly histories but interpreting the information they encode is challenging because mergers are thought to promote both the formation and disruption of GCs. We use simulations with…

Galaxies and galaxy clusters trace the same cosmic density field, but their statistics have been modeled separately in cosmological analyses. We present a unified, simulation-based framework to model them using the galaxy-halo connection.…

宇宙学与河外天体物理 · 物理学 2026-01-26 Shulei Cao , Hao-Yi Wu , Andrés N. Salcedo , David H. Weinberg , Matthieu Schaller , Joop Schaye

We present a simple model for galaxy attenuation by distilling SKIRT radiative transfer calculations for ~100,000 EAGLE galaxies at redshifts z=2-0. Our model adapts the two component screen model of Charlot & Fall (2000), parametrising the…

星系天体物理 · 物理学 2020-01-08 James W. Trayford , Claudia del P. Lagos , Aaron S. G. Robotham , Danail Obreschkow

We apply Monte Carlo Markov Chain (MCMC) methods to large-scale simulations of galaxy formation in a LambdaCDM cosmology in order to explore how star formation and feedback are constrained by the observed luminosity and stellar mass…

宇宙学与河外天体物理 · 物理学 2015-06-12 Bruno Henriques , Simon White , Peter Thomas , Raul Angulo , Qi Guo , Gerard Lemson , Volker Springel

We study the origin of misalignments between the stellar and star-forming gas components of simulated galaxies in the EAGLE simulations. We focus on galaxies with stellar masses $\geq 10^9$ M$_\odot$ at 0$\leq$z$\leq$1. We compare the…

星系天体物理 · 物理学 2024-05-07 Catalina I. Casanueva , Claudia del P. Lagos , Nelson D. Padilla , Thomas A. Davison