An almost head-on collision as the origin of two off-centre rings in the Andromeda galaxy

David L. Block, F. Bournaud, F. Combes, R. Groess, P. Barmby, M. L. N. Ashby, G. G. Fazio, M. A. Pahre, S. P. Willner

Nature · 2006 · 127 citations · 27 references

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