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Observational Constraints on the Formation and Evolution of Globular Cluster Systems

Published online by Cambridge University Press:  01 September 2007

Stephen E. Zepf*
Affiliation:
Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA e-mail: zepf@pa.msu.edu
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Abstract

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This paper reviews some of the observational properties of globular cluster systems, with a particular focus on those that constrain and inform models of the formation and dynamical evolution of globular cluster systems. I first discuss the observational determination of the globular cluster luminosity and mass function. I show results from new very deep HST data on the M87 globular cluster system, and discuss how these constrain models of evaporation and the dynamical evolution of globular clusters. The second subject of this review is the question of how to account for the observed constancy of the globular cluster mass function with distance from the center of the host galaxy. The problem is that a radial trend is expected for isotropic cluster orbits, and while the orbits are observed to be roughly isotropic, no radial trend in the globular cluster system is observed. I review three extant proposals to account for this, and discuss observations and calculations that might determine which of these is most correct. The final subject is the origin of the very weak mass-radius relation observed for globular clusters. I discuss how this strongly constrains how globular clusters form and evolve. I also note that the only viable current proposal to account for the observed weak mass-radius relation naturally effects the globular cluster mass function, and that these two problems may be closely related.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2008

References

Ashman, K. M. & Zepf, S. E. 1998, Globular Custer Systems, (Cambridge University Press)CrossRefGoogle Scholar
Ashman, K. M., & Zepf, S. E. 2001, AJ, 122, 1888CrossRefGoogle Scholar
Barnes, J. E. 1988, ApJ 331, 699CrossRefGoogle Scholar
Baumgardt, H. 1998, A&A 330, 480Google Scholar
Baumgardt, H., Kroupa, P. & Parmentier, G 2008, MNRAS, in pressGoogle Scholar
Baumgardt, H. & Makino, J. 2003, MNRAS 340, 227CrossRefGoogle Scholar
Burkert, A. & Smith, G.H. 2000, ApJ 542, L95CrossRefGoogle Scholar
Côté, P., et al. 2001, ApJ 559, 828CrossRefGoogle Scholar
Djorgovski, S. & Meylan, G. 1994, AJ 108, 1292CrossRefGoogle Scholar
Fall, S. M. & Zhang, Q. 2001, ApJ 561, 751CrossRefGoogle Scholar
Goudfrooij, P., Schweizer, F., Gilmore, D., & Whitmore, B. C. 2007, AJ 133, 2737CrossRefGoogle Scholar
Jordán, A. et al. 2005 ApJ 634, 1002CrossRefGoogle Scholar
Kundu, A., Whitmore, B. C., Sparks, W. B., Macchetto, F. D., Zepf, S. E., & Ashman, K. M. 1999, ApJ 513, 733CrossRefGoogle Scholar
Kundu, A., et al. 2005, ApJ (Letters) 634, 41CrossRefGoogle Scholar
Lamers, H. J. G. L. M., Geiles, M., & Portegies Zwart, S. F. 2005, A&A 429, 173Google Scholar
Larsen, S. S. 2004, A&A 416, 537Google Scholar
Parmentier, G., & Gilmore, G. 2007, MNRAS 377, 352CrossRefGoogle Scholar
Rhode, K. L., & Zepf, S. E. 2001, AJ 121, 210CrossRefGoogle Scholar
Romanowsky, A. J. & Kochanek, C. S. 2001, ApJ 553, 722CrossRefGoogle Scholar
Scheepmaker, R. A., et al. 2007, A&A 469, 925Google Scholar
van den Bergh, S., Morbey, C., & Pazder, J. 1991, ApJ 375, 594CrossRefGoogle Scholar
Vesperini, E. 1997, MNRAS 287, 915CrossRefGoogle Scholar
Vesperini, E., & Zepf, S. E. 2003, ApJ (Letters) 587, L97CrossRefGoogle Scholar
Vesperini, E., Zepf, S. E., Kundu, A., & Ashman, K. M. 2003, ApJ 593, 760CrossRefGoogle Scholar
Waters, C. Z., Zepf, S. E., Lauer, T. R., Baltz, E. A., Silk, J. 2006, ApJ 650, 885CrossRefGoogle Scholar
Waters, C. Z., & Zepf, S. E. 2008, ApJ in preparationGoogle Scholar
White, S. D. M. 1980, MNRAS 191, 1PGoogle Scholar
Zhang, Q. & Fall, S. M. 1999, ApJ 527, L81CrossRefGoogle Scholar