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

Kaviraj, S.; Devriendt, J.; Dubois, Y.; Slyz, A.; Welker, C.; Pichon, C.; Peirani, S.; Borgne, D. Le

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Author

Kaviraj, S.

Devriendt, J.

Dubois, Y.

Slyz, A.

Welker, C.

Pichon, C.

Peirani, S.

Borgne, D. Le

Abstract

We use Horizon-AGN, a hydrodynamical cosmological simulation, to explore the role of mergers in the evolution of massive (M > 10^10 MSun) galaxies around the epoch of peak cosmic star formation (1zR(4:1 3 are 'blue' (i.e. have significant associated star formation), the proportion of 'red' mergers increases rapidly at ztodays stellar mass was formed.