Star clusters: Anything but simple

@article{Grijs2016StarCA,
  title={Star clusters: Anything but simple},
  author={Richard de Grijs},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2016}
}
  • R. Grijs
  • Published 31 December 2016
  • Physics
  • arXiv: Solar and Stellar Astrophysics
The heated debate on the importance of stellar rotation and age spreads in massive star clusters has just become hotter by throwing stellar variability into the mix. 

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References

SHOWING 1-8 OF 8 REFERENCES

STELLAR PULSATIONS ACROSS THE HR DIAGRAM: Part II

▪ Abstract Stars over essentially the whole mass domain can become pulsationally unstable during various stages of their evolution. They will appear as variable stars with characteristics that are ...

Multiple populations in globular clusters

Recent progress in studies of globular clusters has shown that they are not simple stellar populations, but rather are made up of multiple generations. Evidence stems both from photometry and

The exclusion of a significant range of ages in a massive star cluster

It is reported that the stars beyond the main sequence in the two-billion-year-old cluster NGC 1651, characterized by a mass of about 1.7 × 105 solar masses, can be explained only by a single-age stellar population, even though the cluster has a clearly extended main-sequence turn-off region.

The overlooked role of stellar variability in the extended main sequence of LMC intermediate-age clusters

Intermediate-age star clusters in the Large Magellanic Cloud show extended main sequence turnoffs (MSTOs) that are not consistent with a canonical single stellar population. These broad turnoffs have

Controversial Age Spreads from the Main Sequence Turn-Off and Red Clump in Intermediate-Age Clusters in the LMC

Most star clusters at an intermediate age (1-2 Gyr) in the Large and Small Magellanic Clouds show a puzzling feature in their color-magnitude diagrams (CMD) that is not in agreement with a simple

Multiple stellar populations in Magellanic Cloud clusters - I. An ordinary feature for intermediate age globulars in the LMC?

Context. The discovery of multiple main sequences (MS) in the massive clusters NGC 2808 and Omega Centauri, along with multiple subgiant branches in NGC 1851 and NGC 6388 has challenged the long-held

On the interpretation of sub-giant branch morphologies of intermediate-age star clusters with extended main sequence turnoffs

Recent high-quality photometry of many star clusters in the Magellanic Clouds with ages of 1 ‐ 2 Gyr revealed main sequence turnoffs (MSTOs) that are significantly wider than can be accounted for by

Astron

  • Astrophys . Rev .
  • 2012