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We investigate how the orbital evolution and mass distribution of infalling satellite galaxies shape the phase-space and radial distributions of intracluster light (ICL) relative to the underlying cluster dark matter (DM) halo. Using N-body…

Astrophysics of Galaxies · Physics 2026-04-10 G Martin , F R Pearce , N A Hatch , H J Brown , J Butler , Y M Bahe , W Cui , Y Dubois , A Knebe

We discuss the systematic uncertainties inherent to analyses of observed (broad-band) Spectral Energy Distributions (SEDs) of star clusters with evolutionary synthesis models. We investigate the effects caused by restricting oneself to a…

Astrophysics · Physics 2012-01-30 P. Anders , N. Bissantz , U. Fritze-v. Alvensleben , R. de Grijs , ;

We present an analysis of the clustering evolution of dark matter in four cold dark matter (CDM) cosmologies. We use a suite of high resolution, 17-million particle, N-body simulations which sample volumes large enough to give clustering…

Recent advances in scanning transmission electron microscopy (STEM) allow to observe solid-state transformations and reactions in materials induced by thermal stimulus or electron beam on the atomic level. However, despite the rate at which…

Materials Science · Physics 2019-11-26 Maxim Ziatdinov , Ondrej Dyck , Stephen Jesse , Sergei V. Kalinin

Measuring the photoluminescence of defects in crystals is a common experimental technique for analysis and identification. However, current theoretical simulations typically require the simulation of a large number of atoms to eliminate…

Mesoscale and Nanoscale Physics · Physics 2021-02-03 Akib Karim , Igor Lyskov , Salvy P. Russo , Alberto Peruzzo

We study the impact of photometric signal to noise on the accuracy of derived structural parameters of unresolved star clusters using MCMC model fitting techniques. Star cluster images were simulated as a smooth surface brightness…

Astrophysics of Galaxies · Physics 2018-03-14 D. Narbutis , A. Bridžius , D. Semionov

What is the numerical reproducibility of a stellar system (including its discs) when evolving only a sub-set of (partially-evolved) smoothed particle hydrodynamics (SPH) particles? To investigate this, we modelled the evolution of 29 star…

Solar and Stellar Astrophysics · Physics 2024-01-10 James Wurster , Connar Rowan

We simulate the dynamics of fractal star clusters, in order to investigate the evolution of substructure in recently formed clusters. The velocity dispersion is found to be the key parameter determining the survival of substructure. In…

Astrophysics · Physics 2009-11-10 Simon P. Goodwin , A. P. Whitworth

Radiation defects generated in various nuclear materials such as Mo and CeO2, used as a surrogate material for UO2, formed by sub-MeV Xe and Kr ion implantations were studied via TRIM and MD codes. Calculated results were compared with…

Context. Stellar clusters in the Small Magellanic Cloud (SMC) are useful probes for studying the chemical and dynamical evolution of this neighbouring dwarf galaxy, enabling inspection of a large period covering over 10 Gyr. Aims: The main…

Solar and Stellar Astrophysics · Physics 2014-09-17 Bruno Dias , Leandro Kerber , Beatriz Barbuy , Basilio Santiago , Sergio Ortolani , Eduardo Balbinot

We consider the dynamics of pattern formation in a system of point defects under sustained irradiation within the framework of the rate theory. In our study we generalize the standard approach taking into account a production of defects by…

Materials Science · Physics 2013-09-25 V. O. Kharchenko , D. O. Kharchenko

Understanding the formation and evolution of high mass star clusters requires comparisons between theoretical and observational data to be made. Unfortunately, while the full phase space of simulated regions is available, often only partial…

Astrophysics of Galaxies · Physics 2022-10-17 Anne S. M. Buckner , Kong You Liow , Clare L. Dobbs , Tim Naylor , Steven Rieder

This paper investigates whether nonlinear gravitational instability can account for the clustering of galaxies on large and small scales, and for the evolution of clustering with epoch. No CDM-like spectrum is consistent with the shape of…

Astrophysics · Physics 2015-06-24 J. A. Peacock

The main ingredients of recent semi-analytic models of galaxy formation are summarised. We present predictions for the galaxy clustering properties of a well specified LCDM model whose parameters are constrained by observed local galaxy…

Astrophysics · Physics 2007-05-23 Shaun Cole , Andrew Benson , Carlton Baugh , Cedric Lacey , Carlos Frenk

We present a detailed stellar clustering analysis with the application of the two-point correlation function on distinct young stellar ensembles. Our aim is to understand how stellar systems are assembled at the earliest stages of their…

Astrophysics of Galaxies · Physics 2014-03-05 Dimitrios A. Gouliermis , Sacha Hony , Ralf S. Klessen

Spectroscopy has shown the presence of the CN band dicothomy and the Na-O anticorrelations for 50--70% of the investigated samples in the cluster 47 Tuc, otherwise considered a "normal" prototype of high metallicity clusters from the…

Solar and Stellar Astrophysics · Physics 2015-05-19 M. Di Criscienzo , P. Ventura , F. D' Antona , A. Milone , G. Piotto

We investigate the large-scale distribution of galaxy clusters taken from several X-ray catalogs. Different statistics of clustering like the conditional correlation function (CCF) and the minimal spanning tree (MST) as well as void…

Astrophysics · Physics 2008-05-16 A. V. Tikhonov , A. I. Kopylov , S. Gottlober , G. Yepes

Four-dimensional scanning transmission electron microscopy (4D-STEM) enables mapping of diffraction information with nanometer-scale spatial resolution, offering detailed insight into local structure, orientation, and strain. However, as…

Understanding the formation and evolution of young star clusters requires quantitative statistical measures of their structure. We investigate the structures of observed and modelled star-forming clusters. By considering the different…

Astrophysics · Physics 2007-05-23 S. Schmeja , R. S. Klessen