ω Centauri: Not a recent merger but self-enriched?

Imants Platais, Rosemary F.G. Wyse, Leslie Hebb, Young Wook Lee, Soo Chang Rey

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Abstract

The globular cluster ω Centauri shows the largest spread in chemical element abundances of known clusters. We discuss the recent proposal that the most metal-rich stars have a bulk transverse motion with respect to the other cluster members and show that this could arise as a spurious effect resulting from a residual color/magnitude-related term in the proper motions. We briefly discuss the possibility of self-enrichment for this most metal-rich component, including Type la supernovae ejecta.

Original languageEnglish
Pages (from-to)L127-L130
JournalAstrophysical Journal
Volume591
Issue number2 II
DOIs
Publication statusPublished - 2003 Jul 10

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All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Platais, I., Wyse, R. F. G., Hebb, L., Lee, Y. W., & Rey, S. C. (2003). ω Centauri: Not a recent merger but self-enriched? Astrophysical Journal, 591(2 II), L127-L130. https://doi.org/10.1086/377161