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Understanding planes of satellites

  • I. Santos-Santos (a1), H. Artal (a2), R. Domínguez-Tenreiro (a1), P. B. Tissera (a3), S. E. Pedrosa (a4), M. A. Gómez-Flechoso (a5), C. B. Brook (a6), L. Bignone (a3) and A. Serna (a7)...

Abstract

Reproducing the planes of co-orbiting satellites observed in the MW and M31 so far has represented a challenge for cosmological simulations. We have developed a new method to search for kinematically-coherent groups of satellites and applied it to 2 different cosmological hydro-simulations of disc galaxies. In each simulation we have found such a group, that represents roughly half of the total satellite population and is distributed on a fairly thin plane that persists in time. These results are compatible with the MW and M31 observed planes.

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Understanding planes of satellites

  • I. Santos-Santos (a1), H. Artal (a2), R. Domínguez-Tenreiro (a1), P. B. Tissera (a3), S. E. Pedrosa (a4), M. A. Gómez-Flechoso (a5), C. B. Brook (a6), L. Bignone (a3) and A. Serna (a7)...

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