Understanding planes of satellites
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.
- Publication:
-
Dwarf Galaxies: From the Deep Universe to the Present
- Pub Date:
- October 2019
- DOI:
- 10.1017/S1743921318006191
- Bibcode:
- 2019IAUS..344..477S
- Keywords:
-
- galaxies: dwarf;
- formation;
- evolution;
- cosmology: theory;
- observations