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相关论文: Stellar Property Statistics of Massive Halos from …

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Using tens of thousands of halos realized in the BAHAMAS and MACSIS simulations produced with a consistent astrophysics treatment that includes AGN feedback, we validate a multi-property statistical model for the stellar and hot gas mass…

宇宙学与河外天体物理 · 物理学 2018-05-16 Arya Farahi , August E. Evrard , Ian McCarthy , David J. Barnes , Scott T. Kay

We present distributions of orbital parameters of infalling satellites of $\Lambda$CDM haloes in the mass range $10^{12}-10^{14}$M$_\odot$, which represent the initial conditions for the subsequent evolution of substructures within the host…

宇宙学与河外天体物理 · 物理学 2015-06-22 Lilian Jiang , Shaun Cole , Till Sawala , Carlos S. Frenk

We use the IllustrisTNG (TNG) simulations to explore the galaxy-halo connection as inferred from state-of-the-art cosmological, magnetohydrodynamical simulations. With the high mass resolution and large volume achieved by combining the 100…

We investigate the formation of the satellite galaxy population of a Milky Way-mass halo in a very highly resolved magneto-hydrodynamic cosmological zoom-in simulation (baryonic mass resolution $m_b =$ 800 $\rm M_{\odot}$). We show that the…

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…

宇宙学与河外天体物理 · 物理学 2015-06-16 Maria E. De Rossi , Vladimir Avila-Reese , Patricia B. Tissera , Alejandro Gonzalez-Samaniego , Susana Pedrosa

Elucidating the connection between the properties of galaxies and the properties of their hosting haloes is a key element in galaxy formation. When the spatial distribution of objects is also taken under consideration, it becomes very…

We study the kinematics of satellites around isolated galaxies selected from the Sloan Digital Sky Survey (SDSS) spectroscopic catalog. Using a model of the phase-space density previously measured for the halos of LCDM dark matter…

宇宙学与河外天体物理 · 物理学 2013-01-07 Radoslaw Wojtak , Gary A. Mamon

We use the COSMOS2020 catalogue to measure the stellar-to-halo mass relation (SHMR) divided by central and satellite galaxies from $z=0.2$ to $z = 5.5$. Starting from accurate photometric redshifts we measure the near-infrared selected…

Motivated by previous findings that the magnitude gap between certain satellite galaxy and the central galaxy can be used to improve the estimation of halo mass, we carry out a systematic study of the information content of different member…

宇宙学与河外天体物理 · 物理学 2022-03-30 Yanrui Zhou , Jiaxin Han

We examine the present-day total stellar-to-halo mass (SHM) ratio as a function of halo mass for a new sample of simulated field galaxies using fully cosmological, LCDM, high resolution SPH + N-Body simulations.These simulations include an…

宇宙学与河外天体物理 · 物理学 2015-06-11 Ferah Munshi , F. Governato , A. M. Brooks , C. Christensen , S. Shen , S. Loebman , B. Moster , T. Quinn , J. Wadsley

We construct halo occupation distribution (HOD) models of high redshift ($z \gtrsim 7.5$) galaxies with $M_{*}>10^8~M_{\odot}/h$ using the BlueTides hydrodynamic simulation suite, with a particular emphasis on modelling the small scale /…

星系天体物理 · 物理学 2018-08-15 Aklant Kumar Bhowmick , Duncan Campbell , Tiziana DiMatteo , Yu Feng

Observationally, the fraction of blue satellite galaxies decreases steeply with host halo mass, and their radial distribution around central galaxies is significantly shallower in massive (M_* >10e11M_sun) than in Milky Way like systems.…

Environment plays a pivotal role in shaping the evolution of satellite galaxies. Analyzing the properties related to the cold gas phase of satellites provides insights into unravelling the complexity of environmental effects. We use the…

星系天体物理 · 物理学 2024-01-17 Hongxing Chen , Lizhi Xie , Jie Wang , Wenkai Hu , Gabriella De Lucia , Fabio Fontanot , Michaela Hirschamnn

The stellar haloes and intra-cluster light around galaxies are crucial test beds for dark matter (DM) physics and galaxy formation models. We consider the role that the numerical resolution plays in the modelling of these systems by…

Stellar and AGN-driven feedback processes affect the distribution of gas on a wide range of scales, from within galaxies well into the intergalactic medium. Yet, it remains unclear how feedback, through its connection to key galaxy…

星系天体物理 · 物理学 2025-12-15 Daniele Sorini , Sownak Bose , Mathilda Denison , Romeel Davé

We explore two widely used empirical models for the galaxy-halo connection, subhalo abundance matching (SHAM) and the halo occupation distribution (HOD) and compare their predictions with the hydrodynamical simulation IllustrisTNG (TNG) for…

宇宙学与河外天体物理 · 物理学 2020-12-16 Boryana Hadzhiyska , Sownak Bose , Daniel Eisenstein , Lars Hernquist

We study the stellar-to-halo mass relation (SHMR) for central and satellite galaxies with total dynamical masses above 10^10.5 Msun using the suite of cosmological magneto-hydrodynamical simulations IllustrisTNG. In particular, we quantify…

We compare the stellar masses of central and satellite galaxies predicted by three independent semianalytical models with observational results obtained from a large galaxy group catalogue constructed from the Sloan Digital Sky Survey. In…

星系天体物理 · 物理学 2014-11-20 Lei Liu , Xiaohu Yang , H. J. Mo , Frank C. van den Bosch , Volker Springel

We introduce the ARTEMIS simulations, a new set of 42 zoomed-in, high-resolution (baryon particle mass of ~ 2x10^4 Msun/h), hydrodynamical simulations of galaxies residing in haloes of Milky Way mass, simulated with the EAGLE galaxy…

Cosmological simulations of galaxy formation often rely on prescriptions for star formation and feedback that depend on halo properties such as halo mass, central over-density, and virial temperature. In this paper we address the…

宇宙学与河外天体物理 · 物理学 2015-05-18 M. Trenti , B. D. Smith , E. J. Hallman , S. W. Skillman , J. M. Shull
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