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Multiple stellar populations in massive LMC star clusters

Published online by Cambridge University Press:  01 July 2008

A. D. Mackey ,
P. Broby Nielsen ,
A. M. N. Ferguson  and
J. C. Richardson
A. D. Mackey
Affiliation:
Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, UK, email: dmy@roe.ac.uk
P. Broby Nielsen
Affiliation:
Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, UK, email: dmy@roe.ac.uk
A. M. N. Ferguson
Affiliation:
Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, UK, email: dmy@roe.ac.uk
J. C. Richardson
Affiliation:
Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, UK, email: dmy@roe.ac.uk
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Abstract

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The recent discovery of multiple stellar populations in massive Galactic globular clusters poses a serious challenge for models of star cluster formation and evolution. A new angle on this problem is being provided by rich intermediate-age clusters in the Magellanic Clouds. In this contribution we describe the discovery of three such LMC clusters with peculiar main-sequence turn-off morphologies. The simplest interpretation of our observations is that each of these three clusters is comprised of two or more stellar populations spanning an age interval of ~300 Myr. Surprisingly, such features may not be unusual in this type of cluster.

Keywords

globular clusters: generalgalaxies: individual (LMC)Magellanic Cloudsgalaxies: star clusters
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S256: The Magellanic System: Stars, Gas, and Galaxies , July 2008 , pp. 305 - 310
Copyright
Copyright © International Astronomical Union 2009

References

Bertelli, G., Nasi, E., Girardi, L., Chiosi, C., Zoccali, M., & Gallart, C. 2003, AJ, 125, 770CrossRefGoogle Scholar
Glatt, K., Grebel, E. K., Sabbi, E., et al. 2008, AJ, 136, 1703CrossRefGoogle Scholar
Goudfrooij, P., Puzia, T. H., Kozhurina-Platais, V., & Chandar, R. 2008, AJ, submittedGoogle Scholar
Gouliermis, D. A., Lianou, S., Kontizas, M., Kontizas, E., & Dapergolas, A. 2006, ApJ, 652, L93CrossRefGoogle Scholar
Mackey, A. D. & Broby Nielsen, P. 2007, MNRAS, 379, 151CrossRefGoogle Scholar
Mackey, A. D., Broby Nielsen, P., Ferguson, A. M. N., & Richardson, J. C. 2008, ApJ, 681, L17CrossRefGoogle Scholar
Marigo, P., Girardi, L., Bressan, A., Groenewegen, M. A. T., Silva, L., & Granato, G. L. 2008, A&A, 482, 883Google Scholar
Marino, A. F., Villanova, S., Piotto, G., Milone, A. P., Momany, Y., Bedin, L. R., & Medling, A. M. 2008, A&A, 490, 625Google Scholar
Milone, A. P., Bedin, L. R., Piotto, G., et al. 2008a, ApJ, 673, 241CrossRefGoogle Scholar
Milone, A. P., Bedin, L. R., Piotto, G., & Anderson, J. 2008b, A&A, in pressGoogle Scholar
Mucciarelli, A., Carretta, E., Origlia, L., & Ferraro, F. R. 2008, AJ, 136, 375CrossRefGoogle Scholar
Pietrinferni, A., Cassisi, S., Salaris, M., & Castelli, F. 2004, ApJ, 612, 168CrossRefGoogle Scholar
Piotto, G., Villanova, S., Bedin, L. R., et al. 2005, ApJ, 621, 777CrossRefGoogle Scholar
Piotto, G., Bedin, L. R., Anderson, J., et al. 2007, ApJ, 661, L53CrossRefGoogle Scholar
Piotto, G. 2008, MemSAI, 79, 3Google Scholar
Richer, H. B., Dotter, A., Hurley, J., et al. 2008, AJ, 135, 2141CrossRefGoogle Scholar
Salaris, M., Cassisi, S., & Pietrinferni, A. 2008, ApJ, 678, L25CrossRefGoogle Scholar
Santiago, B., Kerber, L., Castro, R., & de Grijs, R. 2002, MNRAS, 336, 139CrossRefGoogle Scholar
Villanova, S., Piotto, G., King, I. R., et al. 2007, ApJ, 663, 296CrossRefGoogle Scholar