Department of Astronomy & Physics

Galaxy Evolution in the Group Environment

Speaker: Laura Parker (McMaster University)
Time: March 29, 2018 - 3:00 PM
Location: Sobey 255


Over time star-forming galaxies, like our Milky Way, transform into passively-evolving red galaxies. These transformations are due to a combination of internal processes and environmental processes, with the galaxy group environment playing a particularly important role. I will review some of our recent work in the local universe where we try to constrain the environmental processes driving galaxy evolution. We find that low mass galaxies living in X-ray rich environments have suppressed star formation and fewer disc-dominated galaxies, at fixed galaxy stellar mass and host halo mass, compared to those with weaker extended X-ray emission. We also find that the fractions of both star-forming and disc galaxies are sensitive to the dynamical state of their host group. I will discuss how these results can help constrain the mechanisms at play in environmentally-driven galaxy evolution. I will finish by presenting work on a recent high resolution hydrodynamic simulation of one interesting low mass galaxy group.


<< Back