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Massive Star Clusters in Dwarf Galaxies

Published online by Cambridge University Press:  31 March 2017

Søren S. Larsen
Søren S. Larsen*
Affiliation:
Department of Astrophysics/IMAPP, Radboud University, Postbus 9010, NL-6500GL Nijmegen, the Netherlands email: s.larsen@astro.ru.nl
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Abstract

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Dwarf galaxies can have very high globular cluster specific frequencies, and the GCs are in general significantly more metal-poor than the bulk of the field stars. In some dwarfs, such as Fornax, WLM, and IKN, the fraction of metal-poor stars that belong to GCs can be as high as 20%–25%, an order of magnitude higher than the 1%–2% typical of GCs in halos of larger galaxies. Given that chemical abundance anomalies appear to be present also in GCs in dwarf galaxies, this implies severe difficulties for self-enrichment scenarios that require GCs to have lost a large fraction of their initial masses. More generally, the number of metal-poor field stars in these galaxies is today less than what would originally have been present in the form of low-mass clusters if the initial cluster mass function was a power-law extending down to low masses. This may imply that the initial GC mass function in these dwarf galaxies was significantly more top-heavy than typically observed in present-day star forming environments.

Keywords

Globular clustersdwarf galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S316: Formation, evolution, and survival of massive star clusters , August 2015 , pp. 91 - 98
Copyright
Copyright © International Astronomical Union 2017 

References

Adamo, A. & Bastian, N. 2015, in: The Lifecycle of Clusters in Galaxies, ed. Stahler, S., Springer Google Scholar
Annibali, F., Tosi, M., Monelli, M., et al. 2009, AJ, 138, 169 Google Scholar
Bastian, N., Adamo, A., Gieles, M., et al. 2012, MNRAS, 419, 2606 Google Scholar
Bastian, N. & Lardo, C. 2015, MNRAS, 453, 357 Google Scholar
Battaglia, G., Tolstoy, E., Helmi, A., et al. 2006, A&A, 459, 423 Google Scholar
Battaglia, G., Sollima, A., & Nipoti, C. 2015, MNRAS, in press (arXiv:1509.02368)Google Scholar
Behroozi, P. S., Conroy, C., & Wechsler, R. H. 2010, ApJ, 717, 379 Google Scholar
Billett, O. H., Hunter, D. A., & Elmegreen, B. G. 2002, AJ, 123, 1454 Google Scholar
Bruzual, G. & Charlot, S. 2003, MNRAS, 344, 1000 Google Scholar
Chandar, R., Whitmore, B. C., Kim, H., et al. 2010, ApJ, 719, 966 Google Scholar
Charbonnel, C., Chantereau, W., Krause, M., et al. 2014, A&A, 569, L6 Google Scholar
Coleman, M. G. & de Jong, J. T. A. 2008, ApJ, 685, 933 Google Scholar
Cook, D. O., Seth, A. C., Dale, D. A., et al. 2012, ApJ, 751, 100 Google Scholar
Dabringhausen, J., Kroupa, P., & Baumgardt, H. 2009, MNRAS, 394, 1529 Google Scholar
D'Antona, F. & Ventura, P. 2007, MNRAS, 379, 1431 CrossRefGoogle Scholar
D'Ercole, A., Vesperini, E., D'Antona, F., et al. 2008, MNRAS, 391, 825 CrossRefGoogle Scholar
D'Ercole, A., D'Antona, F., Ventura, P., et al. 2010, MNRAS, 407, 854 Google Scholar
Decressin, T., Charbonnel, C., & Meynet, G. 2007, A&A, 475, 859 Google Scholar
de Mink, S. E., Pols, O. R., Langer, N., & Izzard, R. G. 2009, A&A, 507, L1 Google Scholar
Dubath, P., Meylan, G., & Mayor, M. 1992, ApJ, 400, 510 CrossRefGoogle Scholar
Elmegreen, B. G. & Efremov, Y. N. 1997, ApJ, 480, 235 Google Scholar
Elmegreen, B. G., Malhotra, S., & Rhoads, J. 2012, ApJ, 757, 9 Google Scholar
Fall, S. M. & Zhang, Q. 2001, ApJ, 561, 751 Google Scholar
Forbes, D. A. & Forte, J. C. 2001, MNRAS, 322, 257 CrossRefGoogle Scholar
Forte, J. C., Strom, S. E., & Strom, K. M. 1981, ApJ, 245, L9 Google Scholar
Forte, J. C., Faifer, F., & Geisler, D. 2007, MNRAS, 382, 1947 Google Scholar
Georgiev, I. Y., Puzia, T. H., Goudfrooij, P., & Hilker, M. 2010, MNRAS, 406, 1967 Google Scholar
Goddard, Q. E., Bastian, N., & Kennicutt, R. C. 2010, MNRAS, 405, 857 Google Scholar
Harris, W. E., Harris, G. L. H., Layden, A. C., & Wehner, E. M. H. 2007, ApJ, 666, 903 Google Scholar
Harris, W. E., Harris, G. L. H., & Alessi, M. 2013, ApJ, 772, 82 CrossRefGoogle Scholar
Johnson, K. E., Leroy, A. K., Indebetouw, R. et al. 2015, ApJ, 806, 35 Google Scholar
Jorcán, A., McLaughlin, D. E., & Côté, P., et al. 2007, 171, 101Google Scholar
Karachentsev, I. D., Sharina, M. E., & Huchtmeier, W. K. 2000, A&A, 362, 544 Google Scholar
Kinman, T. D., Stryker, L. L., Hesser, J. E., et al. 1991, PASP, 103, 1279 Google Scholar
Kirby, E. N., Lanfranchi, G. A., Simon, J. D. et al. 2011, ApJ, 727, 78 Google Scholar
Kruijssen, J. M. D. & Portegies Zwart, S. F. 2009, ApJ, 698, L158 Google Scholar
Kruijssen, J. M. D. 2012, MNRAS, 426, 3008 Google Scholar
Lada, C. J. & Lada, E. A. 1991, in: The formation and evolution of star clusters, ed. Janes, K., ASP: San Francisco Google Scholar
Lada, C. J. & Lada, E. A. 2003, ARA&A, 41, 57 Google Scholar
Langer, G. E., Hoffman, R., & Sneden, C. 1993, PASP, 105, 301 CrossRefGoogle Scholar
Larsen, S. S. & Richtler, T. 2000, A&A, 354, 836 Google Scholar
Larsen, S. S. 2009, A&A, 494, 539 Google Scholar
Larsen, S. S., Brodie, J. P., Huchra, J. P., et al. 2001, AJ, 121, 2974 Google Scholar
Larsen, S. S., Efremov, Y. N., Elmegreen, B. G., et al. 2002, ApJ, 567, 896 Google Scholar
Larsen, S. S., de Mink, S. E., Eldridge, J. J., et al. 2011, A&A, 532, A147 Google Scholar
Larsen, S. S., Strader, J., & Brodie, J. P. 2012a, A&A, 544, L14 Google Scholar
Larsen, S. S., Brodie, J. P., & Strader, J. 2012b, A&A, 546, A53 Google Scholar
Larsen, S. S., Brodie, J. P., Forbes, D. A., & Strader, J. 2014, A&A, 565, A98 Google Scholar
Larsen, S. S., Brodie, J. P., Grundahl, F., & Strader, J. 2014, ApJ, 797, 15 Google Scholar
Letarte, B., Hill, V., Jablonka, P., et al. 2006, A&A, 453, 547 Google Scholar
Lianou, S., Grebel, E. K., & Koch, A. 2010, A&A, 521, A43 Google Scholar
Mieske, S., Küpper, A. H. W., & Brockamp, M. 2014, A&A, 565, L6 Google Scholar
O'Connell, R. W., Gallagher, J. S., & Hunter, D. A. 1994, ApJ, 433, 65 Google Scholar
Okamoto, S., Arimoto, N., Ferguson, A. M. N., et al. 2015, ApJL, L1Google Scholar
Peñarrubia, J., Navarro, J. F., McConnachie, A. W., & Martin, N. F. 2009, ApJ, 698, 222 Google Scholar
Peng, E. W., Jordán, A., Côté, P., et al. 2008, ApJ, 681, 197 Google Scholar
Portegies Zwart, S. F., McMillan, S. L. W., & Gieles, M. 2010, ARA&A, 48, 431 Google Scholar
Prantzos, N. & Charbonnel, C. 2006, A&A, 458, 135 Google Scholar
Seth, A., Olsen, K., Miller, B., et al. 2004, AJ, 127, 798 Google Scholar
Silva-Villa, E. & Larsen, S. S. 2011, A&A, 529, A25 Google Scholar
Strader, J., Smith, G. H., Larsen, S. S., et al. 2009, AJ, 138, 547 Google Scholar
Suntzeff, N. B., Schommer, R. A., Olszewski, E. W., & Walker, A. R. 1992, AJ, 104, 1743 Google Scholar
Tosi, M., Sabbi, E., Bellazzini, M., et al. 2001, AJ, 122, 1271 Google Scholar
Tudorica, A., Georgiev, I. Y. & Chies Santos, A. L. 2015, A&A, 581, A84 Google Scholar
Ventura, P., D'Antona, F., Mazzitelli, I., & Gratton, R. 2001, ApJ, 550, L65 Google Scholar
Webbink, R. F. 1985, in: Dynamics of star clusters, IAU Symp. 113, eds. Goodman, J. & Hut, P., Dordrecht Google Scholar