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The study of protoclusters at cosmic noon is essential to understand the impact on galaxies of the environment and of the transformational processes occurring in this epoch. This work tests the predictions of the DIANOGA cosmological…

We present the new TNG50 cosmological, magnetohydrodynamical simulation -- the third and final volume of the IllustrisTNG project. This simulation occupies a unique combination of large volume and high resolution, with a 50 Mpc box sampled…

We investigate the evolutionary pathways of green valley (GV) galaxies drawn from the SDSS-IV/MaNGA survey. The GV sample is divided into fast- and slow-rotating galaxies based on stellar spin, and their stellar and gas-phase metallicities…

星系天体物理 · 物理学 2026-04-29 Shuang Zhou , Angela Iovino , Marcella Longhetti , Francesco La Barbera , Luca Costantin

We measure the colour evolution and quenching time-scales of $z=1.0-1.8$ galaxies across the green valley. We derive rest-frame $NUVrK$ colours and select blue-cloud, green-valley and red-sequence galaxies from the spectral energy…

We use the IllustrisTNG simulations to explore the dynamic scaling relation between massive clusters and their central galaxies (BCGs). The Illustris TNG300-1 simulation we use includes 280 massive clusters with $M_{200} > 10^{14}$…

宇宙学与河外天体物理 · 物理学 2022-06-01 Jubee Sohn , Margaret J. Geller , Mark Vogelsberger , Ivana Damjanov

We introduce Project GIBLE (Gas Is Better resoLved around galaxiEs), a suite of cosmological zoom-in simulations where gas in the circumgalactic medium (CGM) is preferentially simulated at ultra-high numerical resolution. Our initial sample…

星系天体物理 · 物理学 2023-07-24 Rahul Ramesh , Dylan Nelson

Modern redshift surveys are tasked with mapping out the galaxy distribution over enormous distance scales. Existing hydrodynamical simulations, however, do not reach the volumes needed to match upcoming surveys. We present results for the…

We present a study of the galaxy population predicted by hydrodynamical simulations for a set of 19 galaxy clusters based on the GADGET-2 Tree+SPH code. These simulations include gas cooling, star formation, a detailed treatment of stellar…

天体物理学 · 物理学 2009-11-11 A. Saro , S. Borgani , L. Tornatore , K. Dolag , G. Murante , A. Biviano , F. Calura , S. Charlot

We introduce the BlueTides simulation and report initial results for the luminosity functions of the first galaxies and AGN, and their contribution to reionization. BlueTides was run on the BlueWaters cluster at NCSA from $z=99$ to $z=8.0$…

宇宙学与河外天体物理 · 物理学 2015-12-02 Yu Feng , Tiziana Di-Matteo , Rupert A. Croft , Simeon Bird , Nicholas Battaglia , Stephen Wilkins

We employ the hydrodynamical simulation IllustrisTNG-300-1 to explore the halo occupation distribution (HOD) and environmental dependence of luminous star-forming emission-line galaxies (ELGs) at $z \sim 1$. Such galaxies are key targets…

星系天体物理 · 物理学 2021-02-10 Boryana Hadzhiyska , Sandro Tacchella , Sownak Bose , Daniel J. Eisenstein

We investigate how feedback and environment shapes the X-ray scaling relations of early-type galaxies (ETGs), especially at the low-mass end. We select central-ETGs from the IllustrisTNG-100 box that have stellar masses…

星系天体物理 · 物理学 2023-03-29 Yunchong Wang , Mark Vogelsberger , Dong-Woo Kim , Josh Borrow , Aaron Smith , Lars Hernquist , Wenjie Lin , . , Stanford , MIT , Harvard , Columbia

In spatially resolved galaxy observations, star formation rate radial profiles are found to correlate with total specific star formation rates. A central depletion in star formation is thought to correlate with the globally depressed star…

星系天体物理 · 物理学 2019-04-10 Tjitske K. Starkenburg , Stephanie Tonnesen , Claire Kopenhafer

We examine the properties of atomic hydrogen (HI) associated with galaxies in the EAGLE simulations of galaxy formation. EAGLE's feedback parameters were calibrated to reproduce the stellar mass function and galaxy sizes at $z=0.1$, and we…

We present results from a new set of 30 cosmological simulations of galaxy clusters, including the effects of radiative cooling, star formation, supernova feedback, black hole growth and AGN feedback. We first demonstrate that our AGN model…

宇宙学与河外天体物理 · 物理学 2015-06-22 Simon R. Pike , Scott T. Kay , Richard D. A. Newton , Peter A. Thomas , Adrian Jenkins

Feedback, in particular from active galactic nuclei (AGN), is believed to play a crucial role in the evolution of galaxies. In the local Universe, many galaxies with an AGN are indeed observed to reside in the so-called green valley,…

星系天体物理 · 物理学 2021-10-12 Ignacio Martin-Navarro , Francesco Shankar , Mar Mezcua

We use galaxies from the IllustrisTNG, MassiveBlack-II and Illustris hydrodynamic simulations to investigate the behaviour of large scale galaxy intrinsic alignments. Our analysis spans four redshift slices over the approximate range of…

宇宙学与河外天体物理 · 物理学 2021-09-22 S. Samuroff , R. Mandelbaum , J. Blazek

We employ the EAGLE hydrodynamical simulation to uncover the relationship between cluster environment and $\rm H_2$ content of star-forming galaxies at redshifts spanning $0\leq z\leq 1$. To do so, we divide the star-forming sample into…

星系天体物理 · 物理学 2023-05-31 Aditya Manuwal , Adam R. H. Stevens

Recent stellar population analysis of early-type galaxy spectra has demonstrated that the low-mass galaxies in cluster centers have high [$\alpha/\rm Fe$] and old ages characteristic of massive galaxies and unlike the low-mass galaxy…

We conduct a comparative analysis of galaxy kinematics using IllustrisTNG simulations and integral-field spectroscopy (IFS) observations. We identify 2,342 early-type galaxies (ETGs) from the TNG100 simulation and 236 ETGs from the TNG50…

星系天体物理 · 物理学 2026-02-04 Wenyu Zhong , Min Du , Shengdong Lu , Yunpeng Jin , Kai Zhu

We study the global efficiency of star formation in high resolution hydrodynamical simulations of gas discs embedded in isolated early-type and spiral galaxies. Despite using a universal local law to form stars in the simulations, we find…