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Metallicity Gradients in Globular Cluster Systems: the Trace of a Self-Enrichment Process?

Published online by Cambridge University Press:  03 August 2017

G. Parmentier ,
P. Magain ,
A. Noels ,
A. Thoul  and
E. Jehin
G. Parmentier
Affiliation:
Institute of Astrophysics and Geophysics, University of Liège, avenue de Cointe 5, B-4000 Liège, Belgium
P. Magain
Affiliation:
Institute of Astrophysics and Geophysics, University of Liège, avenue de Cointe 5, B-4000 Liège, Belgium
A. Noels
Affiliation:
Institute of Astrophysics and Geophysics, University of Liège, avenue de Cointe 5, B-4000 Liège, Belgium
A. Thoul
Affiliation:
Institute of Astrophysics and Geophysics, University of Liège, avenue de Cointe 5, B-4000 Liège, Belgium
E. Jehin
Affiliation:
European Southern Observatory, Casilla 19001, Santiago 19, Chile

Abstract

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We have developed a model of globular cluster self-enrichment, based on the ability of the globular cluster gaseous progenitors to retain the ejecta of a first generation of Type II Supernovae. The key point is that this ability depends on the pressure exerted on the progenitor cloud by the surrounding protogalactic medium and therefore on the location of the cloud in the protogalaxy. The model is able to explain the galactic halo metallicities and the metallicity gradient of the Old Halo which is thought to be the genuine galactic globular cluster system. The possibility that metallicity gradients are a common property of extragalactic globular cluster systems is also presented.

Type
Part 4. Star Cluster Formation and Evolution: Theory and Observation
Information
Symposium - International Astronomical Union , Volume 207: Extragalactic Star Clusters , 2002 , pp. 733 - 735
Copyright
Copyright © Astronomical Society of the Pacific 2002 

References

Barmby, P., Huchra, J.P., Brodie, J.P., Forbes, D.A., Schroder, L.L., & Grillmair, C.J. 2000, AJ, 119, 727 Google Scholar
Beasley, M.A., Sharpies, R.M., Bridges, T.J., Hanes, D.A., Zepf, S.E., Ashman, K.M., & Geisler, D. 2000, MNRAS, 318, 1249 CrossRefGoogle Scholar
Geisler, D., Lee, M.G., & Kim, E. 1996, AJ, 111, 1529 CrossRefGoogle Scholar
Hui, X., Ford, H.C., Freeman, K.C., & Dopita, M.A. 1995, ApJ, 449, 592 Google Scholar
Murray, S.D., Lin, D.N.C. 1992, ApJ, 400, 265 Google Scholar
Parmentier, G., Jehin, M., Magain, P., Neuforge, C., Noels, A., & Thoul, A. 1999, A&A, 352, 138 Google Scholar
Parmentier, G., Jehin, M., Magain, P., Noels, A., & Thoul, A. 2000, A&A, 363, 526 Google Scholar
Worthey, G. 1994, ApJS, 95, 107 CrossRefGoogle Scholar
Zinn, R. 1985, ApJ, 293, 424 CrossRefGoogle Scholar
Zinn, R., 1993 in ASP Conf. Ser. Vol. 48, The Globular Cluster - Galaxy Connection, ed. Smith, G.H. & Brodie, J.P., 38 Google Scholar