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Related papers: Star Cluster Evolution with Primordial Binaries

200 papers

We study the compact binary population in star clusters, focusing on binaries containing black holes, using a self-consistent Monte Carlo treatment of dynamics and full stellar evolution. We find that the black holes experience strong mass…

Solar and Stellar Astrophysics · Physics 2011-04-07 J. M. B. Downing , M. J. Benacquista , M. Giersz , R. Spurzem

Our current understanding of the stellar initial mass function and massive star evolution suggests that young globular clusters may have formed hundreds to thousands of stellar-mass black holes, the remnants of stars with initial masses…

Astrophysics of Galaxies · Physics 2015-06-22 Meagan Morscher , Bharath Pattabiraman , Carl Rodriguez , Frederic A. Rasio , Stefan Umbreit

This chapter reviews the dynamical processes in young stellar clusters. The accretion of gas by individual stars affects the dynamics of the cluster, and the masses of the stars. Dynamical mass segregation cannot explain the degree of mass…

Astrophysics · Physics 2007-05-23 Ian Bonnell , Pavel Kroupa

We have developed a new parallel supercomputer code based on Henon's Monte Carlo method for simulating the dynamical evolution of globular clusters. This new code allows us to calculate the evolution of a cluster containing a realistic…

Astrophysics · Physics 2007-05-23 F. A. Rasio

We study the evolution of bound pairs of star clusters by means of direct N-body simulations. Our simulations include mass loss by stellar evolution. The initial conditions are selected to mimic the observed binary star cluster NGC 2136 and…

Astrophysics · Physics 2008-11-26 Simon Portegies Zwart , Stephanie Rusli

Young star clusters can inherit bulk rotation from the molecular clouds from which they have formed. This rotation can affect the long-term evolution of a star cluster and its constituent stellar populations. In this study, we aim to…

(abridged) We use newly available empirical binary fractions for globular clusters to carry out a direct test of the binary evolution hypothesis, and of collisional channels that involve binary stars. More specifically, using the previously…

Solar and Stellar Astrophysics · Physics 2015-06-11 Nathan Leigh , Christian Knigge , Alison Sills , Hagai Perets , Ata Sarajedini , Evert Glebbeek

Binary populations in young star clusters show multiplicity fractions both lower and up to twice as high as those observed in the Galactic field. We follow the evolution of a population of binary stars in dense and loose star clusters…

Astrophysics of Galaxies · Physics 2015-06-05 Michael Marks , Pavel Kroupa

Binary stars are common in star clusters and galaxies, but the detailed effects of binary evolution are not taken into account in some colour-magnitude diagram (CMD) studies. This paper studies the CMDs of twelve globular clusters via…

Solar and Stellar Astrophysics · Physics 2015-06-12 Zhongmu Li , Caiyan Mao , Ruheng Li , Ruxi Li , Maocai Li

Binary stars are predicted to have an important role in the evolution of globular clusters, so we obtained binary fractions for 35 globular clusters that were imaged in the F606W and F814W with the ACS on the Hubble Space Telescope. When…

Astrophysics of Galaxies · Physics 2015-05-04 Jun Ji , Joel N. Bregman

Star clusters - open and globulars - experience dynamical evolution on time scales shorter than their age. Consequently, open and globular clusters provide us with unique dynamical laboratories for learning about two-body relaxation, mass…

Astrophysics · Physics 2007-05-23 Georges Meylan

This review concentrates almost entirely on globular star clusters. It emphasises the increasing realisation that few of the traditional problems of star cluster astronomy can be studied in isolation: the influence of the Galaxy affects…

Astrophysics · Physics 2016-01-27 Douglas C. Heggie

We have coupled a fast, parametrized star cluster evolution code to a Markov Chain Monte Carlo code to determine the distribution of probable initial conditions of observed star clusters, which may serve as a starting point for future…

Solar and Stellar Astrophysics · Physics 2015-08-26 J. T. Pijloo , S. F. Portegies Zwart , P. E. R. Alexander , M. Gieles , S. S. Larsen , P. J. Groot , B. Devecchi

We explore the behaviour of accreting protoclusters with a Monte Carlo dynamical code in order to evaluate the relative roles of accretion, two body relaxation and stellar collisions in the cluster evolution. We corroborate the suggestion…

Solar and Stellar Astrophysics · Physics 2015-05-18 Olaf Davis , Cathie Clarke , Marc Freitag

In order to interpret the results of complex realistic star cluster simulations, which rely on many simplifying approximations and assumptions, it is essential to study the behavior of even more idealized models, which can highlight the…

Astrophysics · Physics 2009-11-11 D. C. Heggie , M. Trenti , P. Hut

We study the dynamical evolution of globular clusters using our new 2-D Monte Carlo code, and we calculate the lifetimes of clusters in the Galactic environment. We include the effects of a mass spectrum, mass loss in the Galactic tidal…

Astrophysics · Physics 2015-06-24 Kriten J. Joshi , Cody P. Nave , Frederic A. Rasio

Both simulations and observations indicate that stars form in filamentary, hierarchically clustered associations, most of which disperse into their galactic field once feedback destroys their parent clouds. However, during their early…

Earth and Planetary Astrophysics · Physics 2015-06-15 Jonathan M. Craig , Mark R. Krumholz

Observations found that star clusters contain a large fraction of binaries. Tight binaries are an important heating source that influences the long-term dynamical evolution of star clusters. However, due to the limitation of $N$-body tool,…

Astrophysics of Galaxies · Physics 2021-11-12 Long Wang , Ataru Tanikawa , Michiko S. Fujii

In dense stellar systems the frequent dynamical interactions between stars play a crucial role in the formation and evolution of compact binaries. We study these processes using a novel approach combining a state-of-the-art binary…

Astrophysics · Physics 2007-05-23 N. Ivanova , F. A. Rasio

Strong encounters between single stars and binaries play a pivotal role in the evolution of star clusters. Such encounters can also dramatically modify the orbital parameters of binaries, exchange partners in and out of binaries, and are a…

Solar and Stellar Astrophysics · Physics 2015-08-06 Aaron M. Geller , Nathan W. C. Leigh