Star clusters as laboratories for stellar and dynamical evolution

@article{Kalirai2010StarCA,
  title={Star clusters as laboratories for stellar and dynamical evolution},
  author={Jason S. Kalirai and Harvey B. Richer},
  journal={Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences},
  year={2010},
  volume={368},
  pages={755 - 782}
}
  • J. Kalirai, H. Richer
  • Published 4 November 2009
  • Physics, Geology
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Open and globular star clusters have served as benchmarks for the study of stellar evolution owing to their supposed nature as simple stellar populations of the same age and metallicity. After a brief review of some of the pioneering work that established the importance of imaging stars in these systems, we focus on several recent studies that have challenged our fundamental picture of star clusters. These new studies indicate that star clusters can very well harbour multiple stellar… 

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References

SHOWING 1-10 OF 196 REFERENCES

Star clusters as simple stellar populations

  • G. Bruzual A.
  • Physics
    Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2010
TLDR
Matching the photometric properties of star clusters using SSP models is a necessary (but not sufficient) condition for clusters to be considered SSPs, and Composite models, characterized by complex star-formation histories, also match the observed cluster colours.

The Early Evolution of Globular Clusters: The Case of NGC 2808

Enhancement and spread of helium among globular cluster stars have been recently suggested as a way to explain the horizontal-branch blue tails in those clusters that show a primordial spread in the

Abundance Variations within Globular Clusters

▪ Abstract Abundance variations within globular clusters (GCs), and of GC stars with respect to field stars, are important diagnostics of a variety of physical phenomena, related to the evolution of

White dwarfs as astrophysical probes

  • J. Kalirai
  • Physics
    Proceedings of the International Astronomical Union
  • 2008
Abstract Much of our knowledge regarding the ages of stars derives from our understanding of the Hertzsprung-Russell Diagram. The diagram is typically dominated by hydrogen burning main-sequence

The physics and modes of star cluster formation: simulations

  • C. Clarke
  • Physics
    Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2010
TLDR
These simulations involve the bottom-up assembly of clusters through hierarchical mergers, which produces a fractal stellar distribution at young ages, which is predicted to be mildly aspherical and highly mass-segregated, except in the immediate aftermath of mergers.

White Dwarf Sequences in Dense Star Clusters

We use the results of realistic N-body simulations to investigate the appearance of the white dwarf population in dense star clusters. We show that the presence of a substantial binary population in

The effect of stellar-mass black holes on the structural evolution of massive star clusters

We present the results of realistic N-body modelling of massive star clusters in the Magellanic Clouds, aimed at investigating a dynamical origin for the radius-age trend observed in these systems.

The formation of a star cluster: predicting the properties of stars and brown dwarfs

We present results from the largest numerical simulation of star formation to resolve the fragmentation process down to the opacity limit. The simulation follows the collapse and fragmentation of a

Binaries in star clusters and the origin of the field stellar population

  • S. Goodwin
  • Physics, Computer Science
    Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2010
TLDR
It is difficult to know whether star formation (as traced by binaries, at least) is universal or whether it depends on the environment, because the field population consists of a mixture of systems from different clusters that have all been processed in different ways.

Stellar population synthesis at the resolution of 2003

We present a new model for computing the spectral evolution of stellar populations at ages between 1 x 10 5 and 2 x 10 1 0 yr at a resolution of 3 A across the whole wavelength range from 3200 to
...