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The puzzling origin and evolution of stellar populations in ω Centauri

Published online by Cambridge University Press:  01 December 2006

A. Sollima*
Affiliation:
Dipartimento di Astronomia, Università di Bologna via Ranzani 1, 40127-I Bologna, Italy
F. R. Ferraro
Affiliation:
Dipartimento di Astronomia, Università di Bologna via Ranzani 1, 40127-I Bologna, Italy
M. Bellazzini
Affiliation:
INAF Osservatorio Astronomico di Bologna via Ranzani 1, 40127-I Bologna, Italy
E. Pancino
Affiliation:
INAF Osservatorio Astronomico di Bologna via Ranzani 1, 40127-I Bologna, Italy
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Abstract

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On the basis of large photometric and spectroscopic datasets, we investigated the general properties of the different sub-populations of ω Centauri in different regions of the color-magnitude diagram. In particular, we analysed the morphology, the structure and the chemical properties of the stellar populations of the system in variuos evolutionary stages. Such a large observational effort allowed us to constraint the different hypotesis on the origin and chemical evolution of this peculiar stellar system.

References

Bedin, L. R., Piotto, G., Anderson, J., Cassisi, S., King, I. R., Momany, Y. & Carraro, G. 2004, ApJ 605, L125CrossRefGoogle Scholar
Ferraro, F. R., Bellazzini, M., Origlia, L., Pancino, E. & Sollima, A. 2003, in: “New Horizons in Globular Cluster Astronomy”, Piotto, G.Meylan, S. G.Djorgovski, & Riello, M. (eds.), (ASP Conf. Ser.), vol. 296, p. 215Google Scholar
Sollima, A., Ferraro, F. R., Pancino, E., & Bellazzini, M. 2005a, MNRAS 357, 265CrossRefGoogle Scholar
Sollima, A., Pancino, E., Ferraro, F. R., Bellazzini, M., Straniero, O. & Pasquini, L. 2005b, ApJ 634, 332CrossRefGoogle Scholar
Sollima, A., Borissova, J., Catelan, M., Smith, H. A., Minniti, D., Cacciari, C. & Ferraro, F. R. 2006 ApJ 640, L43CrossRefGoogle Scholar
Sollima, A., Ferraro, F.R., Bellazzini, M., Origlia, L., Straniero, O., & Pancino, E. 2007, ApJ 654, 915CrossRefGoogle Scholar