Galaxy merger histories and the role of merging in driving star formation at z > 1

@article{Kaviraj2015GalaxyMH,
  title={Galaxy merger histories and the role of merging in driving star formation at z > 1},
  author={S. Kaviraj and J. Devriendt and Y. Dubois and A. Slyz and C. Welker and C. Pichon and S. Peirani and D. Borgne},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2015},
  volume={452},
  pages={2845-2850}
}
We use Horizon-AGN, a hydrodynamical cosmological simulation, to explore the role of mergers in the evolution of massive (M∗ > 10 10 M⊙) galaxies around the epoch of peak cosmic star formation (1 3 are ‘blue’ (i.e. have significant associated star formation), the proportion of ‘red’ mergers increases rapidly at z < 2, with most merging systems at z � 1.5 producing remnants that are red in rest-frame UV-optical colours. The star formation enhancement during major mergers is mild (�20-40%) which… Expand

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