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The main topic of this paper is the investigation of the modes of interaction of globular clusters (GCs) moving in the inner part of a galaxy. This is tackled by means of high-resolution N-body simulations, whose first results are presented…

天体物理学 · 物理学 2010-11-11 P. Miocchi , R. Capuzzo Dolcetta , P. Di Matteo , A. Vicari

Globular clusters (GCs) are often used to estimate the dark matter content of galaxies, especially dwarfs, where other kinematic tracers are lacking. These estimates typically assume spherical symmetry and dynamical equilibrium, assumptions…

星系天体物理 · 物理学 2021-02-17 Jessica E. Doppel , Laura V. Sales , Julio F. Navarro , Mario G. Abadi , Eric W. Peng , Elisa Toloba

We present an end-to-end description of the formation process of globular clusters (GCs) which combines a treatment for their formation and dynamical evolution within galaxy haloes with a state-of-the-art semi-analytic simulation of galaxy…

We first present the results of numerical simulations on formation processes and physical properties of old globular clusters (GCs) located within clusters of galaxies (``intracluster GCs'') and in between clusters of galaxies…

天体物理学 · 物理学 2009-11-13 Hideki Yahagi , Kenji Bekki

Using a cosmological N-body numerical simulation of the formation of a galaxy cluster- sized halo, we analyze the temporal evolution of its globular cluster population. We follow the dynamical evolution of 38 galactic dark matter halos…

星系天体物理 · 物理学 2015-05-22 Felipe Ramos , Valeria Coenda , Hernán Muriel , Mario Abadi

We present a post-processing catalog of globular clusters (GCs) for the $39$ most massive groups and clusters in the TNG50 simulation of the IlllustrisTNG project (virial masses $M_{200} =[5\times 10^{12} \rm - 2 \times 10^{14}$]…

We investigate the structural, kinematical, and chemical properties of globular cluster systems (GCSs) in galaxies of different Hubble types in a self-consistent manner based on high-resolution cosmological N-body simulations combined with…

天体物理学 · 物理学 2009-11-13 K. Bekki , H. Yahagi , M. Nagashima , D. A. Forbes

Using a cosmological dark matter simulation of a galaxy-cluster halo, we follow the temporal evolution of its globular cluster population. To mimic the red and blue globular cluster populations, we select at high redshift $(z\sim 1)$ two…

星系天体物理 · 物理学 2018-02-07 Felipe Ramos-Almendares , Mario G. Abadi , Hernán Muriel , Valeria Coenda

We present N-body simulations of globular clusters, in orbits around the Galaxy, in order to study quantitatively and geometrically the tidal effects they encounter. The clusters are modelised with multi-mass King-Michie models (Michie…

天体物理学 · 物理学 2010-03-01 F. Combes , S. Leon , G. Meylan

Globular clusters (GCs) are old massive star clusters that serve as `fossils' of galaxy formation. The advent of Gaia observatory has enabled detailed kinematics studies of the Galactic GCs and revolutionized our understanding of the…

星系天体物理 · 物理学 2022-07-12 Yingtian Chen , Oleg Y. Gnedin

We study the present-day rotational velocity ($V_{rot}$) and velocity dispersion (${\sigma}$) profiles of the globular cluster (GC) systems in a sample of 50 lenticular (S0) galaxies from the E-MOSAICS galaxy formation simulations. We find…

The globular clusters of large spiral galaxies can be divided into two populations: one which formed in-situ and one which comprises clusters tidally stripped away from other galaxies. In this paper we investigate the contribution to the…

星系天体物理 · 物理学 2019-03-20 Eric P. Andersson , Melvyn B. Davies

We use the IllustrisTNG cosmological hydrodynamical simulation to study the formation of ultra-diffuse galaxies (UDGs) in galaxy clusters. We supplement the simulations with a realistic mass-size relation for galaxies at the time of infall…

宇宙学与河外天体物理 · 物理学 2020-06-30 Laura V. Sales , Julio F. Navarro , Louis Penafiel , Eric W. Peng , Sungsoon Lim , Lars Hernquist

Stellar dynamical model globular clusters are introduced into reconstituted versions of the dark matter halos of the Via-Lactea II (VL-2) simulation to follow the star cluster tidal mass loss and stellar stream formation. The clusters…

星系天体物理 · 物理学 2018-07-18 Raymond G. Carlberg

We present an end-to-end, two-phase model for the origin of globular clusters (GCs). In the model, populations of stellar clusters form in the high-pressure discs of high-redshift ($z>2$) galaxies (a rapid-disruption phase due to tidal…

星系天体物理 · 物理学 2015-10-14 J. M. Diederik Kruijssen

We present new Hubble Space Telescope imaging of the outer regions of M87 in order to study its globular cluster (GC) population out to large galactocentric distances. We discuss particularly the relationship between GC effective radii…

宇宙学与河外天体物理 · 物理学 2015-06-17 Jeremy J. Webb , Alison Sills , William E. Harris

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 investigate the spatial, kinematic and chemical properties of globular cluster systems formed in merging and interacting galaxies using N-body/SPH simulations. Although we can not resolve individual clusters in our simulation, we assume…

天体物理学 · 物理学 2009-11-07 K. Bekki , Duncan A. Forbes , M. A. Beasley , W. J. Couch

We present a high-resolution simulation of globular cluster formation in a galaxy merger. For the first time in such a simulation, individual star clusters are directly identified and followed on their orbits. We quantitatively compare star…

天体物理学 · 物理学 2009-11-10 Yuexing Li , Mordecai-Mark Mac Low , Ralf S. Klessen

With the aim of finding evidence of tidal stripping of globular clusters (GCs) we analysed a sample of 13 elliptical galaxies taken from the ACS Virgo Cluster Survey (VCS). These galaxies belong to the main concentration of the Virgo…

宇宙学与河外天体物理 · 物理学 2009-07-22 Valeria Coenda , Hernan Muriel , Carlos J. Donzelli
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