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A study of AGB stars in LMC clusters

Published online by Cambridge University Press:  01 July 2008

Thomas Lebzelter ,
Michael T. Lederer ,
Sergio Cristallo ,
Oscar Straniero  and
Kenneth H. Hinkle
Thomas Lebzelter
Affiliation:
Department of Astronomy, University of Vienna, Türkenschanzstraße 17, A-1180 Vienna, Austria email: lebzelter@astro.univie.ac.at
Michael T. Lederer
Affiliation:
Department of Astronomy, University of Vienna, Türkenschanzstraße 17, A-1180 Vienna, Austria email: lebzelter@astro.univie.ac.at
Sergio Cristallo
Affiliation:
INAF, Teramo, Italy email: straniero@oa-teramo.inaf.it
Oscar Straniero
Affiliation:
INAF, Teramo, Italy email: straniero@oa-teramo.inaf.it
Kenneth H. Hinkle
Affiliation:
NOAO, Tucson, USA email: hinkle@noao.edu
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Abstract

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LMC clusters offer an outstanding opportunity to investigate the late stages of stellar evolution of stars in the mass range between 1.5 and 2 M⊙. In this presentation we will focus on our results on mixing events during the evolution along the Asymptotic Giant Branch (AGB). Surface abundances have been determined for a number of cluster AGB stars from high resolution near infrared spectra. We show for the first time the evolution of C/O and 12C/13C ratios along a cluster AGB. The change of both quantities due to dredge up events is compared with model predictions. Our results indicate the late occurrence of a moderate extra-mixing in some cases.

Keywords

stars: abundancesstars: AGB and post-AGBstars: evolutiongalaxies: 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. 397 - 402
Copyright
Copyright © International Astronomical Union 2009

References

Alcaino, C., Liller, W., Alvarado, F., et al. 1999, A&AS, 135, 103Google Scholar
Busso, M., Gallino, R., & Wasserburg, J. 1999, ARAA, 37, 239CrossRefGoogle Scholar
Charbonnel, C. 1995, ApJ, 453, 41CrossRefGoogle Scholar
Chieffi, A., Limongi, M., & Straniero, O. 1998, ApJ, 502, 737CrossRefGoogle Scholar
Frogel, J. A., Mould, J., & Blanco, V. M., 1990, ApJ, 352, 96CrossRefGoogle Scholar
Grocholski, A. J., Cole, A. A.Sarajedini, A., et al. 2006, AJ, 132, 1630CrossRefGoogle Scholar
Herwig, F. 2000, A&A, 360, 952Google Scholar
Herwig, F., Blöcker, T., & Driebe, T. 2000, MemSAI, 71, 745Google Scholar
Karakas, A. & Lattanzio, J. 2007, PASA, 24, 103CrossRefGoogle Scholar
Lebzelter, T. & Wood, P. R. 2007, A&A, 475, 643Google Scholar
Lebzelter, T., Lederer, M. T., Cristallo, S., et al. 2008, A&A, 486, 511Google Scholar
Lloyd Evans, T. 1983, MNRAS, 204, 985CrossRefGoogle Scholar
Mackey, A. D. & Broby Nielsen, P. 2007, MNRAS, 379, 151CrossRefGoogle Scholar
Mucciarelli, A., Ferraro, F. R., Origlia, L., & Fusi Pecci, F. 2007, AJ, 133, 2053CrossRefGoogle Scholar
Smith, V. V. & Lambert, D. L. 1990, ApJS, 72, 387CrossRefGoogle Scholar
Straniero, O., Gallino, R., & Cristallo, S. 2006, N.Phys.A, 777, 311CrossRefGoogle Scholar