Hostname: page-component-5447f9dfdb-89v5q Total loading time: 0 Render date: 2025-07-28T23:24:49.816Z Has data issue: false hasContentIssue false
  • English
  • Français

The puzzling origin and evolution of stellar populations in ω Centauri

Published online by Cambridge University Press:  01 December 2006

A. Sollima ,
F. R. Ferraro ,
M. Bellazzini  and
E. Pancino
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
*
† email: antonio.sollima@bo.astro.it
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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.

Keywords

methods: data analysistechniques: photometrictechniques: spectroscopicstars: abundancesstars: evolutionstars: Population IIglobular clusters: ω Centauri

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