PPT-Hot Gas in Elliptical and BCG Galaxies

Craig Sarazin University of Virginia M86 Randall et al 2008 Abell 2052 Blanton et al 2011 Optical light dominated by bulge Last star formation typically billions of years ago. Elliptical Galaxy A galaxy having an elliptical or nearly spherical shape Globular Star Clusters A tightknit collection of many thousands sometimes even millions of stars born at almost the same time and place A cluster can remain as a unit for bill elliptical galaxies – II. Monsters at Heart. Dimitri Gadotti (ESO). Outline – Lecture Two. Composite bulges. Host galaxies and environment. Elliptical galaxies and two dichotomies. core. -depleted vs. extra-. Kyle Davis. Constructed for the gym and built to last for all who want a great workout…….. What is an Elliptical Trainer?. An elliptical trainer also known as cross-trainer. Stationary exercise machine used to . Paul . Nulsen. (. CfA. ), Christine Jones (. CfA. ), . William Forman (. CfA. ), Eugene . Churazov. (MPA),. Laurence David (. CfA. ), Brian McNamara (Waterloo),. Steven Murray (. CfA. ) . AGN Outbursts in Giant . Except for nearby, we can only see bright galaxies. I will ignore dwarf . spheroidal. (. dSph. ) and dwarf elliptical (. dE. ) classifications. Galaxies . come in four broad categories, based on their appearance. Galaxies . And the Foundation of Modern Cosmology. How are the lives of galaxies connected with the history of the universe?. Hubble Deep Field. Our deepest images of the universe show a great variety of galaxies, some of them billions of light-years away. Paul . Nulsen. (. CfA. ), Christine Jones (. CfA. ), . William Forman (. CfA. ), Eugene . Churazov. (MPA),. Laurence David (. CfA. ), Brian McNamara (Waterloo),. Steven Murray (. CfA. ) . AGN Outbursts in Giant . Our Evolving Universe. 1. Other galaxies. Telescopic images of the night sky reveal many other galaxies. What do they look like?. are they all like the Milky Way?. Where are they?. spread randomly through space, or grouped?. Lecture 2; . April 9 2013. Previously.. On Astro-2. The goal of cosmology is to understand how the universe formed and evolved.. How can we build a theory of the universe valid at all times in every place? . and Earth. Which phase of the Moon would. be seen by people on Earth?. Earth. Moon. Sun. New Moon. MYP Unit Question. : What’s out there?. Area of Interaction. : Human Ingenuity. Learner profile:. Galaxies are . not. . alike. For every general rule I give, one can find exceptions. Classifying galaxies is difficult. They look different in different wavelengths. If the galaxy is moving, you have to correct for red-shift. Here’s the Story We’ll Unfold for You…. Hubble’s galaxy classifications: Spirals, . ellipticals. , irregulars. . Structural parts of galaxies: disk, halo, nucleus, bulge. Spiral arms – tracers of star formation. The Hubble Deep Field. 10 day exposure –field located in the Big Dipper. Edwin Hubble. Edwin . Hubble. Hubble’s Galaxy Classification . Spiral Galaxies. galaxies like the Milky Way with arcing structures lying in a plane and emanating from the nuclear bulge. The Universe. The big bang theory. Happened approximately 13.5 billion years ago. The Big Bang was caused by the density of the compressed galaxies. It was in a very high density state, then it expanded. After the beginning expansion, it cool to let subatomic particles and later on, simple atoms to form. .