Paris, 21 July 2014

Satellite galaxies put astronomers in a spin

An international team of researchers, led by astronomers at the Observatoire Astronomique de Strasbourg (CNRS/Université de Strasbourg), has studied 380 galaxies and shown that their small satellite galaxies almost always move in rotating discs. However, such satellite galaxy discs are not predicted by current models of the formation of structures in the Universe. This discovery could cause modelers serious headaches in the years ahead. The results of the study are published in the 31 July 2014 issue of the journal Nature.

To download the press release : Press release_Satellite galaxies



Velocity anti-correlation of diametrically opposed galaxy satellites in the low z universe, N. G. Ibata, R. A. Ibata, B. Famaey, G. F. Lewis, Nature, Vol. 513, July 2014.
(online publication on 20 July 2014, print in the 31 July issue of Nature)


CNRS researcher l Benoit Famaey l T 0033 3 68 85 24 13l

CNRS Press Office l Loïc Bommersbach l T 0033 1 44 96 51 51 l


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