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Young dwarfs date an old halo

An ingenious way of measuring the ages of stellar populations in the halo of the Milky Way will allow astronomers to obtain direct information on the timing of the Galaxy's evolution.

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Figure 1: Edge-on infrared view of the Milky Way.

2MASS/J. CARPENTER, T. H. JARRETT & R. HURT

References

  1. Kalirai, J. S. Nature http://dx.doi.org/10.1038/nature11062 (2012).

  2. Dotter, A. et al. Astrophys. J. 708, 698–716 (2010).

    Article  CAS  ADS  Google Scholar 

  3. Holmberg, J., Nordström, B. & Andersen, J. Astron. Astrophys. 501, 941–947 (2009).

    ADS  Google Scholar 

  4. Jofré, P. & Weiss, A. Astron. Astrophys. 533, A59 (2011).

    Article  ADS  Google Scholar 

  5. Salaris, M., Groenewegen, M. A. T. & Weiss, A. Astron. Astrophys. 355, 299–307 (2000).

    CAS  ADS  Google Scholar 

  6. Frebel, A. et al. Astrophys. J. 660, L117–L120 (2007).

    Article  CAS  ADS  Google Scholar 

  7. Carollo, D. et al. Nature 450, 1020–1025 (2007).

    Article  CAS  ADS  Google Scholar 

  8. Carollo, D. et al. Astrophys. J. 712, 692–727 (2010).

    Article  CAS  ADS  Google Scholar 

  9. Beers, T. C. et al. Astrophys. J. 746, 34 (2012).

    Article  ADS  Google Scholar 

  10. Font, A. S. et al. Mon. Not. R. Astron. Soc. 416, 2802–2820 (2011).

    Article  ADS  Google Scholar 

  11. Tissera, P. B., White, S. D. M. & Scannapieco, C. Mon. Not. R. Astron. Soc. 420, 255–270 (2012).

    Article  CAS  ADS  Google Scholar 

  12. McCarthy, I. G. et al. Mon. Not. R. Astron. Soc. 420, 2245–2262 (2012).

    Article  ADS  Google Scholar 

  13. Bullock, J. S. & Johnston, K. V. Astrophys. J. 635, 931–949 (2005).

    ADS  Google Scholar 

  14. Qian, Y.-Z. & Wasserburg, G. J. Proc. Natl Acad. Sci. USA (in the press); preprint available at http://arxiv.org/abs/1202.3202 (2012).

  15. York, D. G. et al. Astron. J. 120, 1579–1587 (2000).

    Article  ADS  Google Scholar 

  16. Frebel, A. & Norris, J. E. in Planets, Stars and Stellar Systems Vol. 5 (ed. Gilmore, G. ) (Springer, in the press); preprint available at http://arxiv.org/abs/1102.1748 (2012).

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Correspondence to Timothy C. Beers.

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Beers, T. Young dwarfs date an old halo. Nature 486, 38–40 (2012). https://doi.org/10.1038/nature11197

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