Multiple stellar populations in the globular cluster ω Centauri as tracers of a merger event

Nature

Volumn 402, Issue 6757, 1999, Pages 55-57

  Lee, Y W ^a   Joo, J M ^a   Sohn, Y J ^a   Rey, S C ^a   Lee, H C ^a   Walker, A R ^b  

^a Yonsei University   (South Korea)

^b Kitt Peak National Observatory   (Chile)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; ASTRONOMY; COSMOLOGICAL PHENOMENA; COSMOS; PRIORITY JOURNAL;

EID: 0033523901     PISSN: 00280836     EISSN: None     Source Type: Journal    
DOI: 10.1038/46985     Document Type: Article

References (10)

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2. Sarajedini, A. & Layden, A. C. A photometric study of the globular cluster M54 and the Sagittarius dwarf galaxy: Evidence for three distinct populations. Astron. J. 109, 1086-1094 (1995).
3. Layden, A. C. & Sarajedini, A. The globular duster M54 and the star formation history of the Sagittarius dwarf galaxy. Astrophys. J. 486, L107-L110 (1997).
4. Stetson, P. B. DAOPHOT: A computer program for crowded-field stellar photometry. Publ. Astron. Soc. Pacif. 99, 191-222 (1987).
5. Woolley, R. v. d. Studies of the globular cluster ω Centauri. I. Catalogue of magnitudes and proper motions. R. Observ. Ann. No. 2, 1-128 (1966).
6. Demarque, P. et al. New Yale Isochrottes (Yale University Observatory, New Haven, 1996).
7. Lee, Y.-W., Demarque, P. & Zinn, R. The horizontal-branch stars in globular clusters. II. The second parameter phenomenon. Astrophys. J. 423, 248-265 (1994).
8. Norris, J. E., Freeman, K. C. & Mighell, K. J. The giant branch of ω Centauri. V. The calcium abundance distribution. Astrophy. J. 462, 241-254 (1996).
9. Searle, L. & Zinn, R. Compositions of halo dusters and the formation of the galactic halo. Astrophys. J. 225, 357-379 (1978).
10. van den Bergh, S. Mergers of globular clusters. Astrophys. J. 471, L31-L32 (1996).