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

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

doi:10.1086/377161

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

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

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

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 language	English
Pages (from-to)	L127-L130
Journal	Astrophysical Journal
Volume	591
Issue number	2 II
DOIs	https://doi.org/10.1086/377161
Publication status	Published - 2003 Jul 10

Bibliographical note

Funding Information:
We thank J. Norris, J. Pringle, and C. Pryor for useful discussions and two referees for a number of suggestions. This work has been supported in part by NSF grant AST 03-21794 to Johns Hopkins University (I. P.). Y.-W. L. and S.-C. R. acknowledge support from the Creative Research Initiative Program of the Korean Ministry of Science and Technology.

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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title = "ω Centauri: Not a recent merger but self-enriched?",

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.",

author = "Imants Platais and Wyse, {Rosemary F.G.} and Leslie Hebb and Lee, {Young Wook} and Rey, {Soo Chang}",

note = "Funding Information: We thank J. Norris, J. Pringle, and C. Pryor for useful discussions and two referees for a number of suggestions. This work has been supported in part by NSF grant AST 03-21794 to Johns Hopkins University (I. P.). Y.-W. L. and S.-C. R. acknowledge support from the Creative Research Initiative Program of the Korean Ministry of Science and Technology.",

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doi = "10.1086/377161",

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T2 - Not a recent merger but self-enriched?

AU - Platais, Imants

AU - Wyse, Rosemary F.G.

AU - Hebb, Leslie

AU - Lee, Young Wook

AU - Rey, Soo Chang

N1 - Funding Information: We thank J. Norris, J. Pringle, and C. Pryor for useful discussions and two referees for a number of suggestions. This work has been supported in part by NSF grant AST 03-21794 to Johns Hopkins University (I. P.). Y.-W. L. and S.-C. R. acknowledge support from the Creative Research Initiative Program of the Korean Ministry of Science and Technology.

PY - 2003/7/10

Y1 - 2003/7/10

N2 - 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.

AB - 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.

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

Abstract

Bibliographical note

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