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相关论文: The IllustrisTNG Simulations: Public Data Release

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Galaxy formation theories predict that galaxy shapes and angular momenta have non-random alignments with the cosmic web. This leads to so-called intrinsic alignment between pairs of galaxies, which is important to quantify as a nuisance…

宇宙学与河外天体物理 · 物理学 2023-07-13 Benjamin Zhang , Khee-Gan Lee , Alex Krolewski , Jingjing Shi , Benjamin Horowitz , Robin Kooistra

The hydrodynamic cosmological simulation, TNG50, is employed to conduct an analysis of multi-spin galaxies that exhibit ringed structures composed of gas and stars that orbit nearly perpendicular around a host galaxy, known as polar ring…

Dark matter haloes and subhaloes that host no luminous counterpart are predicted within our current understanding of galaxy formation within a $\Lambda$CDM paradigm. Observational tests, such as gravitational lensing, have made potential…

星系天体物理 · 物理学 2026-03-25 Jessica E. Doppel , Mathilde Jauzac , David J. Lagattuta , Azadeh Fattahi , Guillaume Mahler

We study the structural evolution of isolated star-forming galaxies in the Illustris TNG100-1 hydrodynamical simulation, with a focus on investigating the growth of the central core density within 2 kpc ($\Sigma_{*,2kpc}$) in relation to…

星系天体物理 · 物理学 2021-03-24 Dan Walters , Joanna Woo , Sara L. Ellison , Maan H. Hani

We investigate the evolutionary histories of a population of high mass, high redshift, quiescent galaxies in the cosmohydrodynamical simulation Thesan, studying the characteristic properties of their haloes and environments over the epoch…

We present the first results from applying the Santa Cruz semi-analytic model (SAM) for galaxy formation on merger trees extracted from a dark matter only version of the IllustrisTNG (TNG) simulations. We carry out a statistical comparison…

Observations of the cold neutral atomic hydrogen (HI) in and around disc galaxies have revealed that spatial and kinematic asymmetries are commonplace, and are reflected in the global HI spectra. We use the TNG100 box from the IllustrisTNG…

星系天体物理 · 物理学 2020-10-21 Adam B. Watts , Chris Power , Barbara Catinella , Luca Cortese , Adam R. H. Stevens

Motivated by observational results, we use IllustrisTNG hydrodynamical numerical simulations to study the alignment of the central galaxies in groups with the surrounding structures. This approach allows us to analyse galaxy and group…

宇宙学与河外天体物理 · 物理学 2023-04-05 Facundo Rodriguez , Manuel Merchán , M. Celeste Artale , Moira Andrews

We compare three major large-scale hydrodynamical galaxy simulations (EAGLE, Illustris-TNG, and SIMBA) by forward modeling simulated galaxies into observational space and computing the fraction of isolated and quiescent low mass galaxies as…

We present a new simulated galaxy cluster catalog based on the IllustrisTNG simulation. We use the Mulguisin (MGS) algorithm to identify galaxy overdensities. Our cluster identification differs from the previous FoF cluster identification…

星系天体物理 · 物理学 2024-05-29 Lael Shin , Jubee Sohn , Young Ju , Inkyu Park , Cristiano G. Sabiu

The new generation of optical spectrographs (i.e., WEAVE, 4MOST, DESI, and WST) offer unprecedented opportunities for statistically studying the star formation histories of galaxies. However, these observations are not easily comparable to…

As part of the AGORA High-resolution Galaxy Simulations Comparison Project (Kim et al. 2014, 2016) we have generated a suite of isolated Milky Way-mass galaxy simulations using 9 state-of-the-art gravito-hydrodynamics codes widely used in…

High-resolution (HR) simulations in cosmology, in particular when including baryons, can take millions of CPU hours. On the other hand, low-resolution (LR) dark matter simulations of the same cosmological volume use minimal computing…

宇宙学与河外天体物理 · 物理学 2024-04-30 Adam Rouhiainen , Michael Gira , Moritz Münchmeyer , Kangwook Lee , Gary Shiu

We recently developed an automated method, auto-GMM to decompose simulated galaxies. It extracts kinematic structures in an accurate, efficient, and unsupervised way. We use auto-GMM to study the stellar kinematic structures of disk…

星系天体物理 · 物理学 2020-06-10 Min Du , Luis C. Ho , Victor P. Debattista , Annalisa Pillepich , Dylan Nelson , Dongyao Zhao , Lars Hernquist

We perform a consistent comparison of the mass and mass profiles of massive ($M_\star > 10^{11.4}M_{\odot}$) central galaxies at z~0.4 from deep Hyper Suprime-Cam (HSC) observations and from the Illustris, TNG100, and Ponos simulations.…

We present a comprehensive study of the distribution of matter around different populations of large-scale cosmic filaments, using the IllustrisTNG simulation at z=0. We computed the dark matter (DM), gas, and stellar radial density…

宇宙学与河外天体物理 · 物理学 2022-05-18 Daniela Galárraga-Espinosa , Mathieu Langer , Nabila Aghanim

We study the effect of baryonic processes on weak lensing (WL) observables with a suite of mock WL maps, the $\kappa$TNG, based on the cosmological hydrodynamic simulations IllustrisTNG. We quantify the baryonic effects on the WL angular…

宇宙学与河外天体物理 · 物理学 2021-03-09 Ken Osato , Jia Liu , Zoltán Haiman

We demonstrate the capabilities of probabilistic diffusion models to reduce dramatically the computational cost of expensive hydrodynamical simulations to study the relationship between observable baryonic cosmological probes and dark…

宇宙学与河外天体物理 · 物理学 2026-01-22 Satvik Mishra , Roberto Trotta , Matteo Viel

The AGORA Cosmorun (arXiv:2106.09738) is a set of hydrodynamical cosmological zoom-in simulations carried out within the AGORA High-resolution Galaxy Simulations Comparison Project (arXiv:1308.2669,arXiv:1610.03066). These simulations show…

Using the IllustrisTNG cosmological galaxy formation simulations, we analyze the physical properties of young quiescent galaxies at z=2 with stellar masses above 10^10.5 solar masses. This key population provides an unaltered probe into the…

星系天体物理 · 物理学 2021-10-07 Debosmita Pathak , Sirio Belli , Rainer Weinberger