Observations of star clusters in the Milky Way defy the view that the constituents of these systems are almost invariably chemically alike. The outlying clusters could be the tattered relics of once larger systems.
References
Freeman, K. C. & Rodgers, A. W. Astrophys. J. 201, L71–L74 (1975).
Norris, J. & Bessell, M. S. Astrophys. J. 201, L75–L79 (1975).
Lee, J.-W., Kang, Y.-W., Lee, J. & Lee, Y.-W. Nature 462, 480–482 (2009).
Ferraro, F. R. et al. Nature 462, 483–486 (2009).
Denisenkov, P. A. & Denisenkova, S. N. Astron. Tsirk. 1538, 11 (1989).
Da Costa, G. S. et al. Astrophys. J. 705, 1481–1491 (2009).
Marino, A. F. et al. Astron. Astrophys. (in the press).
Carretta, E., Bragaglia, A., Gratton, R., D'Orazi, V. & Lucatello, S. Astron. Astrophys. (in the press).
Milone, A. P. et al. Astrophys. J. 673, 241–250 (2008).
Piotto, G. et al. Astrophys. J. 661, L53–L56 (2007).
Ventura, P. et al. Mon. Not. R. Astron. Soc. (in the press).
Marín-Franch, A. et al. Astrophys. J. 694, 1498–1516 (2009).
D'Antona, F. & Ventura, P. Mon. Not. R. Astron. Soc. 379, 1431–1441 (2007).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Cohen, J. Assortment in the Galaxy. Nature 462, 421–422 (2009). https://doi.org/10.1038/462421a
Published:
Issue Date:
DOI: https://doi.org/10.1038/462421a
- Springer Nature Limited