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We quantify the structure of a very large number of Galactic open clusters and look for evidence of mass segregation for the most massive stars in the clusters. We characterise the structure and mass segregation ratios of 1276 clusters in…

Astrophysics of Galaxies · Physics 2017-10-30 Sami Dib , Stefan Schmeja , Richard J. Parker

We study the evolution of populations of binary stars within massive cluster-forming regions. We simulate the formation of young massive star clusters within giant molecular clouds with masses ranging from 2 x 10$^{4}$ to 3.2 x 10$^{5}$…

Feedback from massive stars plays an important role in the formation of star clusters. Whether a very massive star is born early or late in the cluster formation timeline has profound implications for the star cluster formation and assembly…

Stars in star clusters are thought to form in a single burst from a common progenitor cloud of molecular gas. However, massive, old globular clusters -- with ages greater than 10 billion years and masses of several hundred thousand solar…

Astrophysics of Galaxies · Physics 2016-02-03 Chengyuan Li , Richard de Grijs , Licai Deng , Aaron M. Geller , Yu Xin , Yi Hu , Claude-Andre Faucher-Giguere

Using radiation-hydrodynamic cosmological simulations, we present a detailed ($0.1$ pc resolution), physically motivated portrait of a typical-mass dwarf galaxy before the epoch of reionization, resolving the formation and evolution of star…

Astrophysics of Galaxies · Physics 2023-05-03 Fred Angelo Batan Garcia , Massimo Ricotti , Kazuyuki Sugimura , Jongwon Park

Open clusters belonging to star-forming complexes are the leftovers from the initial stellar generations. The study of these young systems provides constraints to models of star formation and evolution as well as to the properties of the…

Solar and Stellar Astrophysics · Physics 2015-05-19 F. F. S. Maia , W. J. B. Corradi , J. F. C. Santos

Stars form predominantly in clusters inside dense clumps of turbulent, magnetized molecular clouds. The typical size and mass of the cluster-forming clumps are \sim 1 pc and \sim 10^2 - 10^3 M_\odot, respectively. Here, we discuss some…

Solar and Stellar Astrophysics · Physics 2015-06-11 Fumitaka Nakamura , Zhi-Yun Li

The formation of galaxy clusters in hierarchically clustering universes is investigated by means of high resolution N-body simulations. The simulations are performed using a newly developed multi-mass scheme which combines a PM code with a…

Astrophysics · Physics 2007-05-23 A. Huss , B. Jain , M. Steinmetz

We investigate the formation of both clustered and distributed populations of young stars in a single molecular cloud. We present a numerical simulation of a 10,000 solar mass elongated, turbulent, molecular cloud and the formation of over…

Astrophysics of Galaxies · Physics 2015-05-19 Ian A. Bonnell , Rowan J. Smith , Paul C. Clark , Matthew R. Bate

Massive star clusters are often used as tracers of galaxy formation and assembly. In order to do so, we must understand their properties at formation, and how those properties change with time, galactic environment, and galaxy assembly…

Astrophysics of Galaxies · Physics 2023-07-05 Marta Reina-Campos , Alison Sills , Godefroy Bichon

We investigate the formation of star clusters in an unbound GMC, where the supporting kinetic energy is twice as large as the cloud's self-gravity. This cloud manages to form a series of star clusters and disperse, all within roughly 2…

Astrophysics · Physics 2014-10-13 Paul C. Clark , Ian A. Bonnell , Hans Zinnecker , Matthew R. Bate

We explore the relative percentages of binary systems and higher-order multiples that are formed by pure stellar dynamics, within a small subcluster of $N$ stars. The subcluster is intended to represent the fragmentation products of a…

Solar and Stellar Astrophysics · Physics 2024-11-13 Hannah E. Ambrose , A. P. Whitworth

We study the first 100Myr of the evolution of isolated star clusters initially containing 144179 stars, including 13107 (10%) primordial hard binaries. Our calculations include the effects of both stellar and binary evolution. Gravitational…

Astrophysics · Physics 2008-11-26 Simon Portegies Zwart , Steve McMillan , Jun Makino

An investigation based on data from the spatially complete 2MASS Survey reveals that a remarkable burst of clustered star formation is taking place throughout the south-east quadrant of the Rosette Molecular Cloud. Compact clusters are…

Astrophysics · Physics 2009-11-10 J. Z. Li , M. D. Smith

After the stars of a new, embedded star cluster have formed they blow the remaining gas out of the cluster. Especially winds of high mass stars and definitely the on-set of the first super novae can remove the residual gas from a cluster.…

Astrophysics · Physics 2007-05-23 M. Fellhauer , P. Kroupa

We propose that bound, young massive stellar clusters form from dense clouds that have escape speeds greater than the sound speed in photo-ionized gas. In these clumps, radiative feedback in the form of gas ionization is bottled up,…

Astrophysics of Galaxies · Physics 2015-06-11 Eli Bressert , Adam Ginsburg , Cara Battersby , John Bally , Steven Longmore , Leonardo Testi

Recent observations have revealed that at least several old globular clusters (GCs) in the Galaxy have discrete distributions of stars along the Mg-Al anti-correlation. In order to discuss this recent observation, we construct a new…

Astrophysics of Galaxies · Physics 2017-08-23 K. Bekki , T. Jerabkova , P. Kroupa

The mass segregation of stellar clusters could be primordial rather than dynamical. Despite the abundance of studies of mass segregation for stellar clusters, those for stellar progenitors are still scarce, so the question on the origin and…

Stellar streams are the inevitable end product of star cluster evolution, with the properties of a given stream being related to its progenitor. We consider how the dynamical history of a progenitor cluster, as traced by the evolution of…

Astrophysics of Galaxies · Physics 2021-12-15 Jeremy J. Webb , Jo Bovy

The formation history of rich clusters is investigated using a hybrid N-body simulation in which high spatial and mass resolution can be achieved self-consistently within a small region of a very large volume. The evolution of three massive…

Astrophysics · Physics 2009-10-30 Tereasa G. Brainerd , David M. Goldberg , Jens Verner Villumsen
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