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Multiple populations in globular clusters: constraints from kinematics and dynamics

Published online by Cambridge University Press:  31 March 2017

Vincent Hénault-Brunet
Vincent Hénault-Brunet*
Affiliation:
Department of Physics, University of Surrey, GU2 7XH, Guildford, UK email: v.henault-brunet@surrey.ac.uk
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Abstract

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We discuss constraints on the formation of multiple populations in globular clusters (GCs) imposed by their present-day kinematics (velocity dispersion and anisotropy) and spatial distribution. We argue that the observational evidence collected so far in the outer parts of clusters is generally consistent with an enriched population forming more centrally concentrated compared to the primordial population, in agreement with all the scenarios proposed to date (in some cases by design), but not sufficient to favour a particular scenario. We highlight that the differential rotation of subpopulations is a signature that may provide crucial new constraints and allow us to distinguish between various scenarios. Finally, we discuss the spatial distribution of subpopulations in the central regions of GCs and speculate that mass segregation between subpopulations may be due to a difference in their binary fraction.

Keywords

star clustersglobular clusters: generalstars: kinematicsGalaxy: kinematics and dynamics
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. 310 - 315
Copyright
Copyright © International Astronomical Union 2017 

References

Bastian, N., Lamers, H. J. G. L. M., de Mink, S. E., et al. 2013, MNRAS, 436, 2398 Google Scholar
Bastian, N., Cabrera-Ziri, I., & Salaris, M. 2015, MNRAS, 449, 3333 CrossRefGoogle Scholar
Bastian, N. & Lardo, C. 2015, MNRAS, 453, 357 Google Scholar
Bekki, K. 2010, ApJL, 724, L99 Google Scholar
Bekki, K. 2011, MNRAS, 412, 2241 Google Scholar
Bellazzini, M., Bragaglia, A., Carretta, E., et al. 2012, A&A, 538, A18 Google Scholar
Bellini, A., Piotto, G., Bedin, L. R., et al. 2009, A&A, 507, 1393 Google Scholar
Dalessandro, E., Massari, D., Bellazzini, M., et al. 2014, ApJL, 791, L4 Google Scholar
Decressin, T., Baumgardt, H., & Kroupa, P. 2008, A&A, 492, 101 Google Scholar
D'Ercole, A., Vesperini, E., D'Antona, F., et al. 2008, MNRAS, 391, 825 Google Scholar
D'Orazi, V., Gratton, R., Lucatello, S., et al. 2010, ApJL, 719, L213 Google Scholar
Gieles, M., Heggie, D. C., & Zhao, H. 2011, MNRAS, 413, 2509 Google Scholar
Gieles, M. & Zocchi, A. 2015, MNRAS, 454, 576 Google Scholar
Gratton, R. G., Carretta, E., & Bragaglia, A. 2012, A&ARv, 20, 50 Google Scholar
Hénault-Brunet, V., Gieles, M., Agertz, O., & Read, J. I. 2015, MNRAS, 450, 1164 Google Scholar
Hong, J., Vesperini, E., Sollima, A., et al. 2015, MNRAS, 449, 629 Google Scholar
Hurley, J. R., Aarseth, S. J., & Shara, M. M. 2007, ApJ, 665, 707 CrossRefGoogle Scholar
Kučinskas, A., Dobrovolskas, V., & Bonifacio, P. 2014, A&A, 568, L4 Google Scholar
Lardo, C., Bellazzini, M., Pancino, E., et al. 2011, A&A, 525, A114 Google Scholar
Larsen, S. S., Baumgardt, H., Bastian, N., et al. 2015, ApJ, 804, 71 CrossRefGoogle Scholar
Lucatello, S., Sollima, A., Gratton, R., et al. 2015, arXiv:1509.05014Google Scholar
Mastrobuono-Battisti, A. & Perets, H. B. 2013, ApJ, 779, 85 Google Scholar
Milone, A. P., Piotto, G., Bedin, L. R., et al. 2012, ApJ, 744, 58 CrossRefGoogle Scholar
Piotto, G., Milone, A. P., Anderson, J., et al. 2012, ApJ, 760, 39 Google Scholar
Richer, H. B., Heyl, J., Anderson, J., et al. 2013, ApJL, 771, L15 CrossRefGoogle Scholar
Sollima, A., Ferraro, F. R., Bellazzini, M., et al. 2007, ApJ, 654, 915 Google Scholar
Spitzer, L. 1987, Princeton University Press, 191 p.Google Scholar
Vanderbeke, J., De Propris, R., De Rijcke, S., et al. 2015, MNRAS, 451, 275 Google Scholar
Vesperini, E., McMillan, S. L. W., D'Antona, F. & D'Ercole, A. 2013, MNRAS, 429, 1913 Google Scholar