Hot Horizontal Branch Stars in ω Centauri: Clues about their Origin from the Cluster Color Magnitude Diagram

@article{Cassisi2009HotHB,
  title={Hot Horizontal Branch Stars in ω Centauri: Clues about their Origin from the Cluster Color Magnitude Diagram},
  author={S. Cassisi and M. Salaris and J. Anderson and G. Piotto and A. Pietrinferni and A. Milone and A. Bellini and R. Bedin},
  journal={The Astrophysical Journal},
  year={2009},
  volume={702},
  pages={1530-1535}
}
We investigate a peculiar feature at the hottest, blue end of the horizontal branch of Galactic globular cluster ω Centauri, using the high-precision and nearly complete catalog that has been constructed from a survey taken with the Advanced Camera for Survey on board the Hubble Space Telescope, that covers the inner 10 × 10 arcmin. It is a densely populated clump of stars with an almost vertical structure in the F435W-(F435W–F625W) plane, that we termed "blue clump." A comparison with… Expand
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References

SHOWING 1-10 OF 46 REFERENCES
Analysis of the Hot Stellar Population of the Globular Cluster ω Centauri
  • 39
Super-Helium-rich Populations and the Origin of Extreme Horizontal-Branch Stars in Globular Clusters
  • 165
  • Highly Influential
  • PDF
CCD Photometry of the Globular Cluster ω Centauri. II. Stellar Populations and Age-Metallicity Relation
  • 65
  • PDF
The multiplicity of the subgiant branch of ω centauri : Evidence for prolonged star formation
  • 163
  • PDF
The Hottest Horizontal-Branch Stars in Omega Centauri: Late Hot Flasher vs. Helium Enrichment
  • 36
  • Highly Influential
  • PDF
Chemical Abundances and Rotation Velocities of Blue Horizontal-Branch Stars in Six Globular Clusters*
  • 122
  • Highly Influential
  • PDF
...
1
2
3
4
5
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