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Related papers: MOCCA code for star cluster simulations - VI. Bimo…

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Wide (soft) binaries are expected to be rapidly disrupted in dense stellar environments, yet they are observed in both the Galactic field and open clusters (OCs). In this paper, we investigate the formation and disruption of wide binaries…

We briefly describe and discuss the set-up of the project MOCCA Survey Database I. The database contains more than 2000 Monte Carlo models of evolution of real star cluster performed with the MOCCA code. Then, we very briefly discuss…

Astrophysics of Galaxies · Physics 2019-04-09 Mirek Giersz , Abbas Askar , Jakub Klencki , Jakub Morawski

We have made a comparative study of morphological evolution in simulated DM halos and X-ray brightness distribution, and in optical clusters. Samples of simulated clusters include star formation with supernovae feedback, radiative cooling,…

Astrophysics · Physics 2009-04-15 Nurur Rahman , Janusz Krywult , Patrick M. Motl , Piotr Flin , Sergei F. Shandarin

We study the degree of angular substructure in the stellar position distribution of young members of Galactic star-forming regions, looking for correlations with distance from cluster center, surface number density of stars, and local…

Astrophysics of Galaxies · Physics 2015-06-23 Karl O. Jaehnig , Nicola Da Rio , Jonathan C. Tan

We combine dissipationless N-body simulations and semi-analytic models of galaxy formation to study the spatial and kinematic distributions of cluster galaxies in a LCDM cosmology. We investigate how the star formation rates, colours and…

We have used a proper combination of multiband high-resolution {\it HST-WFPC2} and wide-field ground based observations to image the galactic globular cluster NGC 6266 (M62). The extensive photometric data set allows us to determine the…

Astrophysics · Physics 2008-11-26 G. Beccari , F. R. Ferraro , A. Possenti , E. Valenti , L. Origlia , R. T. Rood

We explore the morphological and dynamical evolution of galaxy clusters in simulations using scalar and vector-valued Minkowski valuations and the concept of fundamental plane relations. In this context, three questions are of fundamental…

Astrophysics · Physics 2009-07-07 C. Beisbart , R. Valdarnini , T. Buchert

Many close stellar binaries are accompanied by a far-away star. The "eccentric Kozai-Lidov" (EKL) mechanism can cause dramatic inclination and eccentricity fluctuations, resulting in tidal tightening of inner binaries of triple stars. We…

Solar and Stellar Astrophysics · Physics 2015-06-19 Smadar Naoz , Daniel C. Fabrycky

Based on over 3000 BV images of M4 collected in years 1995-2009 we obtain light curves of 22 variables, 10 of which are newly detected objects. We identify four detached eclipsing binaries and eight contact binaries. Accurate periods are…

Solar and Stellar Astrophysics · Physics 2013-07-15 J. Kaluzny , I. B. Thompson , M. Rozyczka , W. Krzeminski

We determine the distribution of stellar surface densities, \Sigma, from models of static and dynamically evolving star clusters with different morphologies, including both radially smooth and substructured clusters. We find that the \Sigma…

Astrophysics of Galaxies · Physics 2015-06-11 Richard J. Parker , Michael R. Meyer

The photometric properties that we could observe for Extra-Galactic Globular Clusters (EGGCs) are the integrated light of the system and for nearby EGGCs it also is possible to measure both half-light radii and the color spatial…

Astrophysics of Galaxies · Physics 2020-03-18 Agostino Leveque , Mirosław Giersz

(Abridged) Following on from a recently completed radial-velocity survey of the old (7 Gyr) open cluster NGC 188 in which we study in detail the solar-type hard binaries and blue stragglers of the cluster, here we investigate the dynamical…

Solar and Stellar Astrophysics · Physics 2015-06-11 Aaron M. Geller , Jarrod R. Hurley , Robert D. Mathieu

Chemical evolution models and Monte Carlo simulation techniques have been combined for the first time to study the distribution of blue compact galaxies on the N/O plateau. Each simulation comprises 70 individual chemical evolution models.…

Astrophysics · Physics 2011-02-11 R. B. C. Henry , A. Nava , Jason X. Prochaska

Most stars form in highly clustered environments within molecular clouds, but eventually disperse into the distributed stellar field population. Exactly how the stellar distribution evolves from the embedded stage into gas-free associations…

Astrophysics of Galaxies · Physics 2023-09-21 Juan P. Farias , Stella S. R. Offner , Michael Y. Grudić , Dávid Guszejnov , Anna L. Rosen

I report outcomes of the analysis of the $A^+$ parameter, which measures the level of radial segregation of blue straggler stars in old star clusters, commonly known as the dynamical clock for the long-term internal dynamical evolution. I…

Astrophysics of Galaxies · Physics 2020-12-18 Andrés E. Piatti

The new approach outlined in Paper I (Spurzem \& Giersz 1996) to follow the individual formation and evolution of binaries in an evolving, equal point-mass star cluster is extended for the self-consistent treatment of relaxation and close…

Astrophysics · Physics 2009-10-31 M. Giersz , R. Spurzem

The Interstellar Medium has a fractal structure, in the sense that gas and dust distribute in a hierarchical and self-similar manner. Stars in new-born cluster probably follow the same fractal patterns of their parent molecular clouds.…

Astrophysics of Galaxies · Physics 2012-08-02 Nestor Sanchez , Emilio J. Alfaro

We present a combination of high-resolution Hubble Space Telescope and wide-field ground-based and Galaxy Evolution Explorer data of the Galactic Globular Cluster M10 (NGC6254). By using this large data-set we determined the center of…

Solar and Stellar Astrophysics · Physics 2015-06-15 E. Dalessandro , F. R. Ferraro , B. Lanzoni , R. P. Schiavon , R. W. O'Connell , G. Beccari

The growing number of black hole binary (BHB) mergers detected by the Laser Interferometer Gravitational-Wave Observatory (LIGO) have the potential to enable an unprecedented characterization of the physical processes and astrophysical…

High Energy Astrophysical Phenomena · Physics 2020-10-21 Oliver Anagnostou , Michele Trenti , Andrew Melatos

Identifying bifurcated blue straggler (BS) sequences in color-magnitude diagrams (CMDs) of star clusters has long been regarded as a powerful diagnostic for distinguishing different BS formation mechanisms. While such bifurcations are…

Solar and Stellar Astrophysics · Physics 2025-04-28 Li Wang , Dengkai Jiang , Chengyuan Li , Licai Deng , Antonino P. Milone , Long Wang
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