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We present a method to couple N-body star cluster simulations to a cosmological tidal field, using the Astrophysical Multipurpose Software Environment. We apply this method to star clusters embedded in the CosmoGrid dark matter-only…

Cosmology and Nongalactic Astrophysics · Physics 2013-11-05 Steven Rieder , Tomoaki Ishiyama , Paul Langelaan , Junichiro Makino , Stephen L. W. McMillan , Simon Portegies Zwart

Understanding the formation of stellar clusters requires following the interplay between gas and newly formed stars accurately. We therefore couple the magnetohydrodynamics code FLASH to the N-body code ph4 and the stellar evolution code…

We have developed a numerical model for the temporal evolution of particle and photon spectra resulting from nonthermal processes at the shock fronts formed in merging clusters of galaxies. Fermi acceleration is approximated by injecting…

Astrophysics · Physics 2007-05-23 R. C. Berrington , C. D. Dermer

The relationship between young stellar clusters and respective parental molecular clouds is still an open issue: for instance, are the similarities between substructures of clouds and clusters just a coincidence? Or would they be the…

We present COCOLA (Coherence-Oriented Contrastive Learning for Audio), a contrastive learning method for musical audio representations that captures the harmonic and rhythmic coherence between samples. Our method operates at the level of…

The evolution of the galaxy cluster abundance depends sensitively on the value of the cosmological density parameter, Omega_0. Recent ASCA data are used to quantify this evolution as measured by the X-ray temperature function. A chi^2…

Astrophysics · Physics 2009-10-30 V. R. Eke , S. Cole , C. S. Frenk , J. P. Henry

N-body simulations are widely used to simulate the dynamical evolution of a variety of systems, among them star clusters. Much of our understanding of their evolution rests on the results of such direct N-body simulations. They provide…

Instrumentation and Methods for Astrophysics · Physics 2012-01-30 P. Anders , H. Baumgardt , N. Bissantz , S. Portegies Zwart

We conducted an investigation of the Coma cluster of galaxies by running a series of constrained hydrodynamic simulations with GIZMO-SIMBA and GADGET-3, based on initial conditions reconstructed from the SDSS survey volume in the ELUCID…

Context: Numerical simulations of stellar convection and photospheres have been developed to the point where detailed shapes of observed spectral lines can be explained. Stellar atmospheres are very complex, and very different physical…

Solar and Stellar Astrophysics · Physics 2015-05-28 Boris V. Gudiksen , Mats Carlsson , Viggo H. Hansteen , Wolfgang Hayek , Jorrit Leenaarts , Juan Martínez-Sykora

We present a new implementation of the Monte Carlo method to simulate the evolution of star clusters. The major improvement with respect to the previously developed codes is the treatment of the external tidal field taking into account for…

Solar and Stellar Astrophysics · Physics 2015-06-22 A. Sollima , A. Mastrobuono Battisti

The formation of stars with light-element abundance variations in globular clusters and the subsequent dynamical evolution of these multiple populations remains an open question. One of the most widely discussed is the AGB scenario, in…

Astrophysics of Galaxies · Physics 2025-10-09 Mirek Giersz , Abbas Askar , Arkadiusz Hypki , Jongsuk Hong , Grzegorz Wiktorowicz , Lucas Hellstrom

We introduce version two of the fast star cluster evolution code Evolve Me A Cluster of StarS (EMACSS). The first version (Alexander & Gieles) assumed that cluster evolution is balanced for the majority of the life-cycle, meaning that the…

Astrophysics of Galaxies · Physics 2015-06-17 Mark Gieles , Poul Alexander , Henny Lamers , Holger Baumgardt

The physical mechanisms that regulate the collapse of high-mass parsec-scale clumps and allow them to form clusters of new stars represent a crucial aspect of star formation. To investigate these mechanisms, we developed the Rosetta Stone…

The intracluster medium (ICM) records the history of galaxy clusters through its complex dynamical properties. To effectively interpret these properties, robust methods are needed to compare observational data with theoretical models. We…

Cosmology and Nongalactic Astrophysics · Physics 2025-10-20 Efrain Gatuzz

mcdust is a parallel simulation code for dust evolution in protoplanetary disks. The code is written in FORTRAN90 and parallelised with OpenMP. The code models dust collisional evolution and transport in the vertical and radial directions.…

Instrumentation and Methods for Astrophysics · Physics 2025-07-30 Vignesh Vaikundaraman , Nerea Gurrutxaga , Joanna Drążkowska

We perform an extensive test of theoretical stellar models for main-sequence stars in ugriz, using cluster fiducial sequences obtained in the previous paper of this series. We generate a set of isochrones using the Yale Rotating…

We simulate star formation and star cluster assembly inside a molecular cloud with parameters we derive directly from observations of the Aquila Rift. We model the evolution of stars and gas together while resolving close encounters between…

Astrophysics of Galaxies · Physics 2026-05-12 Jeremy Karam , Michiko S. Fujii , Rachel Friesen , Alison Sills

We study the dynamical evolution of globular clusters using our 2D Monte Carlo code with the inclusion of primordial binary interactions for equal-mass stars. We use approximate analytical cross sections for energy generation from…

Astrophysics · Physics 2009-11-07 J. M. Fregeau , M. A. Gurkan , K. J. Joshi , F. A. Rasio

Aims. We analyze the autocorrelation function of a large contiguous sample of galaxy clusters, the Constrain Dark Energy with X-ray (CODEX) sample, in which we take particular care of cluster definition. These clusters were X-ray selected…

Cosmological simulations are crucial tools in studying the Universe, but they typically do not directly match real observed structures. Constrained cosmological simulations, on the other hand, are designed to match the observed distribution…

Cosmology and Nongalactic Astrophysics · Physics 2022-06-03 Metin Ata , Khee-Gan Lee , Claudio Dalla Vecchia , Francisco-Shu Kitaura , Olga Cucciati , Brian C. Lemaux , Daichi Kashino , Thomas Müller
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