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The dynamical fate of binary star clusters in the Galactic tidal field

R. Priyatikanto, M. B. N. Kouwenhoven, M. I. Arifyanto, H. R. T. Wulandari, S. Siregar
2016 Monthly notices of the Royal Astronomical Society  
We investigate the evolution of binary star clusters with different orbital configurations, with a particular focus on the Galactic tidal field.  ...  N-body simulations are used to test our semi-analytic model and also to study additional features of evolving binary clusters, such as the kinematics of stars, global cluster rotation, evaporation rates  ...  This work was carried out during the research visit of R.P. to the Kavli Institute for Astronomy and Astrophysics at Peking University, which was partially supported by Leids-Kerkhoven-Bosscha Fonds (LKBF  ... 
doi:10.1093/mnras/stw060 fatcat:rfgnnp2nwfempeco7w6ypx5uiu

Kinematical fingerprints of star cluster early dynamical evolution

Enrico Vesperini, Anna Lisa Varri, Stephen L. W. McMillan, Stephen E. Zepf
2014 Monthly Notices of the Royal Astronomical Society Letters  
We study the effects of the external tidal field on the violent relaxation phase of star clusters dynamical evolution, with particular attention to the kinematical properties of the equilibrium configurations  ...  emerging at the end of this phase.We show that star clusters undergoing the process of violent relaxation in the tidal field of their host galaxy can acquire significant internal differential rotation  ...  C O N C L U S I O N S We have studied the effects of the host galaxy tidal field on the dynamics of a star cluster violent relaxation.  ... 
doi:10.1093/mnrasl/slu088 fatcat:wcembs5ma5cdfd55rwumbpng64

Effects of external tidal field on the evolution of the outer regions of multi-mass star clusters

K. H. Lee, H. M. Lee, H. Sung
2006 Monthly notices of the Royal Astronomical Society  
Using NBODY6 which takes into account the two-body relaxation correctly, we investigate general evolution of globular clusters in galactic tidal field.  ...  We present N-body simulations of realistic globular clusters containing initial mass function in the galaxy to study effects of tidal field systematically on the properties of outer parts of globular clusters  ...  Dynamical evolution of many body systems can be studied by various methods. The most desirable method to study dynamical evolution of a globular cluster is a direct N-body integration.  ... 
doi:10.1111/j.1365-2966.2006.09972.x fatcat:a22aizvwcjbizcky4idiwfvpzq

Estimating the impact of the Galactic bar on the evolution of Galactic star clusters fromN-body simulations

L. J. Rossi, J. R. Hurley
2015 Monthly notices of the Royal Astronomical Society  
We present an analysis of the effect of a barred gravitational potential on the evolution of several properties of star clusters, constructing a model of the Galactic bar and evolving a set of direct N-body  ...  simulations of star clusters within the resulting potential.  ...  AC K N OW L E D G E M E N T S We thank Jeremy Webb for valuable discussion regarding the description of the tidal radius.  ... 
doi:10.1093/mnras/stv2039 fatcat:2advqqzznrhhdgexutzqjmwusi

Destruction of star clusters due to the radial migration in spiral galaxies

M. S. Fujii, J. Baba
2012 Monthly Notices of the Royal Astronomical Society: Letters  
We performed N-body simulations of star clusters in galactic disks, in which both star clusters and galactic disks are modeled as N-body ("live") systems, and as a consequence the disks form transient  ...  in a fast disruption of the star clusters because of a stronger tidal field in the inner region of the galaxy.  ...  This work was supported by Postdoctoral Fellowship for Research Abroad of the Japan Society for the Promotion of Science (JSPS) and HPCI Strategic Program Field 5 'The Origin of Matter and the Universe  ... 
doi:10.1111/j.1745-3933.2012.01336.x fatcat:tuswgm57snevphcl5ovxtottyq

Open Cluster Evolutions in Binary System: How They Dissolved [article]

Rhorom Priyatikanto, M. Ikbal Arifyanto, Hesti R.T. Wulandari
2013 arXiv   pre-print
In this study, we performed N-body simulations of merger binary clusters with different initial conditions.  ...  After merging, these clusters dissolve with greater mass-loss rate because of their angular momentum. These rotating clusters also experience more deceleration caused by external tidal field.  ...  Conclusions In this study, several N-body simulations of merger binary clusters are performed.  ... 
arXiv:1307.1744v1 fatcat:6ho26ibe2vdapkgimbalgebzdu

Treatment of realistic tidal field in Monte Carlo simulations of star clusters

A. Sollima, A. Mastrobuono Battisti
2014 Monthly notices of the Royal Astronomical Society  
We present a new implementation of the Monte Carlo method to simulate the evolution of star clusters.  ...  The first calculations for stellar systems containing 21000 and 42000 equal-mass particles show good agreement with direct N-body simulations in terms of the evolution of both the enclosed mass and the  ...  The most direct approach to the simulation of star clusters is through N-body simulations.  ... 
doi:10.1093/mnras/stu1426 fatcat:pe3xg6fpwzgcrnw4qdop7e6b6y

Galactic orbital motions of star clusters: static versus semicosmological time-dependent Galactic potentials

Hosein Haghi, Akram Hasani Zonoozi, Saeed Taghavi
2015 Monthly notices of the Royal Astronomical Society  
Based on the direct N-body calculations of star clusters carried out with collisional N-body code, NBODY6, we also discuss the consequences of the time-dependence of a Galactic potential on the early-  ...  and long-term evolution of star clusters in a simple way, by comparing the evolution of two star clusters embedded in galactic models, which represent the galaxy at present and 12 Gyr ago, respectively  ...  ACKNOWLEDGEMENTS This paper is dedicated to Professor Yousef Sobouti, the founder of IASBS, for his tireless and distinguished efforts in promoting the scientific research in the theoretical astrophysics  ... 
doi:10.1093/mnras/stv827 fatcat:eq6kijpohneutjhr7vhojqqi6i

Evolution of star cluster systems in isolated galaxies: first results from directN-body simulations

L. J. Rossi, K. Bekki, J. R. Hurley
2016 Monthly notices of the Royal Astronomical Society  
The evolution of star clusters is largely affected by the tidal field generated by the host galaxy.  ...  To explore this expectation a sophisticated model of the tidal field is required in order to study the evolution of star cluster systems in realistic galaxies.  ...  AC K N OW L E D G E M E N T S We thank the anonymous referee for comments which we believe have contributed to an improved submission.  ... 
doi:10.1093/mnras/stw1827 fatcat:tdkrsb55krgrxl5njil6yf3oyy

The ESO Multi-instrument Kinematic Survey (MIKiS) of Galactic Globular Clusters: Solid-body Rotation and Anomalous Velocity Dispersion Profile in NGC 5986

B. Lanzoni, F. R. Ferraro, A. Mucciarelli, C. Pallanca, M. A. Tiongco, A. Varri, E. Vesperini, M. Bellazzini, E. Dalessandro, L. Origlia, E. Valenti, A. Sollima (+2 others)
2018 Astrophysical Journal  
We present the results of a series of N-body simulations illustrating the possible dynamical paths leading to kinematic features like those observed in this cluster and the fundamental dynamical processes  ...  This is the first globular cluster for which evidence of the joint presence of solid-body rotation and flattening in the outer velocity dispersion profile is found.  ...  In the left panels, a dashed line shows a theoretical solid-body rotation curve with slope Ω/2, a value that star clusters will converge to during their long-term evolution in a tidal field (see Tiongco  ... 
doi:10.3847/1538-4357/aad810 fatcat:vfqs7yhhhjhsdai7bnasnmbvvq

N-body models of rotating globular clusters

A. Ernst, P. Glaschke, J. Fiestas, A. Just, R. Spurzem
2007 Monthly notices of the Royal Astronomical Society  
We have studied the dynamical evolution of rotating globular clusters with direct N-body models.  ...  Last, but not least, we have looked at rotating N-body models in a tidal field within the tidal approximation. It turns out that rotation increases the escape rate significantly.  ...  TIDALLY LIMITED EQUAL-MASS MODELS As a step towards more realistic models of globular clusters, we investigate in this section the effects of the tidal field of the Galaxy on the dynamical evolution of  ... 
doi:10.1111/j.1365-2966.2007.11602.x fatcat:5263egxjsrdyzdvpukoftkbvga

MIKiS: the ESO-VLT Multi-Instrument Kinematic Survey of Galactic Globular Clusters

Francesco R. Ferraro
2019 Zenodo  
interactions with the Galactic tidal field.  ...  presence of intermediate-mass black holes in star clusters will be finally addressed, with crucial impact on our understanding of the formation and evolutionary processes of globular clusters and their  ...  , a coherent sinusoidal pattern is obtained and the PA of the rotation axis (PA 0 ) and the amplitude can be derived (N -body simulations of Tiongco et al. 2017): The MIKiS survey: the sample Ferraro  ... 
doi:10.5281/zenodo.2595129 fatcat:6iz73i42nnawlicbhaoir3rrcm

How to Form (Twin) Globular Clusters? [article]

Christian Theis (Institut f. Theoretische Physik und Astrophysik, University of Kiel, Kiel, Germany)
2000 arXiv   pre-print
In this paper the final collapse stages of the different scenarios are compared by N-body simulations for shells and spheres. It is shown that fragmentation is much more pronounced for shells.  ...  Taking a galactic tidal field into account shells preferably form twin (or multiple) systems, whereas spheres end up as single clusters.  ...  N-body simulations are performed for isolated configurations as well as for collapses within a galactic tidal field.  ... 
arXiv:astro-ph/0007144v1 fatcat:7aeczqtykzfijcez2cyilrmabi

The Origin of IRS 16: Dynamically Driven In‐Spiral of a Dense Star Cluster to the Galactic Center?

Simon F. Portegies Zwart, Stephen L. W. McMillan, Ortwin Gerhard
2003 Astrophysical Journal  
We use direct N-body simulations to study the inspiral and internal evolution of dense star clusters near the Galactic center.  ...  These clusters sink toward the center due to dynamical friction with the stellar background, and may go into core collapse before being disrupted by the Galactic tidal field.  ...  Z. was supported as fellow of the Royal Netherlands Academy of Arts and Sciences (KNAW) and the Netherlands Research School for Astronomy (NOVA).  ... 
doi:10.1086/376439 fatcat:jifcqrbk4jh4tb43c4ymryxepm

OUP accepted manuscript

2019 Monthly notices of the Royal Astronomical Society  
To analyse the dynamical behaviour of the multiple stellar populations in a variety of spin-orbit coupling conditions, we have considered three reference cases in which the tidally perturbed star cluster  ...  We present the results of a suite of \Nbody simulations aimed at understanding the fundamental aspects of the long-term evolution of the internal kinematics of multiple stellar populations in globular  ...  ACKNOWLEDGEMENTS We wish to thank the referee for a careful reading and review of the manuscript.  ... 
doi:10.1093/mnras/stz1595 fatcat:7rths55iczaqbi7cfeitl7vhry
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