Slide 1Galaxy groups Michael Balogh Department of Physics and Astronomy University of Waterloo Slide 2 Outline 1.Where do groups fit in the hierarchy? 2.Group selection methods…

Slide 1Galaxy Formation and Evolution, Mo, van den Bosch & White, 2010 Galactic Dynamics, Binney & Tremaine 2008 Slide 2 Introduction Galaxy interactions are frequent…

1. NGC 1275 2. Perseus-Pisces Supercluster, 75 Mpc, mass ~8×1015 Msun 3. Perseus Cluster, 75 Mpc, 500 galaxies, M~2×1015 Msun 4. NGC 1275 5. [O II] H I + [N II] HI[S II]…

Slide 1To measure the brightness distribution of galaxies, we must determine the surface brightness of the resolved galaxy. Surface brightness = magnitude within 1 square…

Slide 1 Galaxy Clustering Topology : Constraints on Galaxy Formation Models and Cosmological Parameters The CosPA 2009 Meeting, Nov. 18-20, 2009 Changbom Park (Korea Institute…

Slide 1 CLUSTER SOFT EXCESS: NEW FACES OF AN OLD ENIGMA Richard Lieu University of Alabama, Huntsville Jonathan Mittaz Max Bonamente Slide 2 The discovery of cluster soft…

Slide 1 Dark Matter and Galaxy Formation Section 4: Semi-Analytic Models of Galaxy Formation Joel R. Primack 2009, eprint arXiv:0909.2021 Presented by: Michael Solway Slide…

Slide 1 Radiative Efficiency and Content of Extragalactic Radio Sources Laura Bîrzan Collaborators: Brian McNamara (U. Waterloo), Paul Nulsen (CfA), Chris Carilli (NRAO),…

Slide 1 Battle of the Mass Estimators (Based on Bahcall and Tremaine, 1981) Nick Cowan UW Astronomy January 25, 2005 Slide 2 Outline Weighing Galaxies The Virial Theorem…

Slide 1 Bubble heating in groups and clusters: the nature of ghost cavities Nazirah Jetha 1, Martin Hardcastle 2, Simon Weston 2, Arif Babul 3, Ewan O’Sullivan 4, Trevor…