Oral Presentation

The kinematic morphology - density relationship in clusters

Author(s): Sarah Brough (UNSW)

Presenter: Sarah Brough (University of New South Wales)

The bulk movement - kinematics - of the stars in galaxies tells us about their past lives. Simulations show that galaxies form with their stars rotating fast, but that rotation slows over time due to galaxy mergers. Observed samples were, until recently, too small to say whether the slow down of rotation is caused by increasing galaxy mass or by the external effects of galaxy environment. I will present the kinematic morphology - density relationship in clusters from the significantly larger SAMI Galaxy Survey where we have been able to disentangle these competing effects.