An age difference of two billion years between a metal-rich and a metal-poor globular cluster
Hansen, B. M. S., Kalirai, J. S., Anderson, J., Dotter, A., Richer, H. B., Rich, R. M., Shara, M. M., Fahlman, G. G., Hurley, J. R., King, I. R., Reitzel, D., Stetson, P. B.Volume:
500
Language:
english
Journal:
Nature
DOI:
10.1038/nature12334
Date:
July, 2013
File:
PDF, 574 KB
english, 2013