Skip to main content Accessibility help
×
Home

Did globular clusters contribute to the stellar population of the Galactic halo?

  • Corinne Charbonnel (a1) (a2) and Martin Krause (a3) (a4)

Abstract

The origin of Galactic halo stars and the contribution of globular clusters (GC) to this stellar population have long been (and still are) debated. The discovery of multiple stellar populations with peculiar chemical properties in GCs both in the Milky Way and in Local Group galaxies recently brought a renewal on these questions. Indeed most of the scenarios that compete to reproduce the present-day GC characteristics call for fast expulsion of both gas and low-mass stars from these clusters in their early infancy. In this framework, the initial masses of GCs could have been 8 to 25 times higher than their present-day stellar mass, and they could have contributed to 5 to 20 % of the low-mass stars in the Galactic halo. Here we revisit these conclusions, which are in tension with observations of dwarf galaxies and of young massive star clusters in the Local Group. We come back in particular on the paradigm of gas expulsion from massive star clusters, and propose an alternative interpretation of the GC abundance properties. We conclude by proposing a major revision of the current concepts regarding the role massive star clusters play in the assembly of galactic haloes.

    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Did globular clusters contribute to the stellar population of the Galactic halo?
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Did globular clusters contribute to the stellar population of the Galactic halo?
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Did globular clusters contribute to the stellar population of the Galactic halo?
      Available formats
      ×

Copyright

References

Hide All
Bastian, N. & et al., 2013, MNRAS, 436, 2398
Bastian, N. & Hollyhead, K., Cabrera-Ziri, I., 2014, MNRAS, 445, 378
Bastian, N., & Lardo, C., 2015, MNRAS, 453, 357
Bragaglia, A., et al. 2014, ApJ, 796, 68
Carretta, E., et al. 2009, A&A 505, 139
Carretta, E., et al. 2010, A&A, 516, A55
Carretta, E. 2013, A&A, 557, A128
Charbonnel, C. & Lagarde, N. 2010, A&A 522 A10 (C14)
Charbonnel, C. & Zahn, J. P. 2007, A&A (Letter), 467, L15
Charbonnel, C., Chantereau, W., Krause, M., Primas, F., & Wang, Y. 2014, A&A (Letter), 569, L6
D'Antona, F. & Caloi, V. 2004, ApJ, 611, 871
Decressin, T., et al. 2007a, A&A, 475, 859
Decressin, T., Charbonnel, C. & Meynet, G., 2007b, A&A, 464, 1029
Decressin, T., Baumgardt, H., Charbonnel, C., & Kroupa, P., A&A, 516, A73
De Mink, S., et al. 2009, A&A (Letters), 507, L1
Denissenkov, P. A. & Hartwick, F. D. A. 2014, MNRAS (Letter), 437, L21
D'Ercole, , et al. 2010, MNRAS, 407, 854
Khalaj, P. & Baumgardt, H. 2015, MNRAS, 492, 924
Gratton, R. G., Carretta, E., & Bragaglia, A. 2012, A&ARv, 20, 50
Krause, M., Charbonnel, C., et al. 2012, A&A (Letter), 546, L5
Krause, M., Charbonnel, C., et al. 2013, A&A, 552, A121
Krause, M., Charbonnel, C., Bastian, N., & Diehl, R. 2015, submitted to A&A (K15)
Kroupa, P., et al. 2013, in Planets, Stars and Stellar Systems (Springer Netherlands), 115
Lagarde, N., et al. 2012, A&A, 543, A108
Larsen, S. S., et al. 2014, A&A, 565, A98
Lind, K., et al. 2009, A&A, 503, 545
Marino, A. F., et al. 2015, MNRAS, 450, 815
Martell, S. L., Molinski, J. P., Beers, T. C., & Grebel, E. K. 2011, A&A, 354, A136
Milone, A. P., Marino, A. F., Piotto, G. P., et al. 2015, ApJ, 808, 51
Piotto, G., et al. 2002, ApJ, 670, 39
Prantzos, N. & Charbonnel, C. 2006, A&A, 458, 135
Schaerer, D. & Charbonnel, C. 2011, MNRAS, 413, 2297
Simmerer, J., et al. 2013, ApJ (Letters), 764, L7
Smith, G. H. & Norris, J. 1982, ApJ, 254, 594
Ventura, P., et al. 2001, ApJ (Letter), 550, L65
Ventura, P., et al. 2013, MNRAS, 431, 3642
MathJax
MathJax is a JavaScript display engine for mathematics. For more information see http://www.mathjax.org.

Keywords

Did globular clusters contribute to the stellar population of the Galactic halo?

  • Corinne Charbonnel (a1) (a2) and Martin Krause (a3) (a4)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed