PPT-The Universe Motions of galaxies

The expanding Universe Recap Milky Way Distances in the Milky Way our Galaxy is very large Other galaxies Galaxy properties Morphology spiral and elliptical galaxies spirals can appear different depending on viewing . Early Cosmologies. Sections 1.1-1.2. Reminders. Reading quiz for Chapter 1, Sections 3 and 4, due on Mallard prior to start of next class.. Weekly reflection #1 will be sent via email later today and will be due via email prior to start of class on Tuesday.. Boot Camp. Robert Nemiroff. Michigan Tech . Abstract. What is gravitational lensing, what has it told us about the universe, and what more can it tell us about the universe? Lenses such as black holes, stars, galaxies, clusters of galaxies, and the universe as a whole will be covered. Concepts such as Einstein rings, photon spheres, image pair creation events, and shear will be defined and briefly discussed. The intersection of gravitational lensing with current research frontiers will be reviewed including how microlensing is being used to search for extra-solar planets, how radio telescopes are being used to probe galaxy-center black holes, and how weak lensing is being used to probe galaxy evolution in the early universe. Possible lensing signals in continuing and upcoming missions such as Planck, DES, LSST, Euclid, and WFIRST will be reviewed. Relevant parts of the lecturer's own research will also be briefly mentioned. . SIZE and Scale. Of The. Universe. What is your Cosmic Address?. Size and Scale of the Universe. # Street. City. State. Country. Continent. Hemisphere. . Planet. Orbit. Star?. …?. …. …. …. …. Physicist and communicator at CERN. The dark side of the Universe. Shrimp Nebula. ©. VLT, European Space Observatory. Convince you all of the existence of dark matter. Review how one can catch dark matter. 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?. Ms. Cordaro . SMHS . Earth Science. Review/Warm up – Write this in your journal. (Do not fill in the blanks yet!!). A light year = How far _ _ _ _ _ travels in _ _ _ year.. The electromagnetic spectrum is made up of different size _ _ _ _ _ that produce _ _ _ _ _ _ in the form of radiation.. 11. . What do you observe about the direction of the light shift for these galaxies?. Observation #1: . ALL GALAXIES ARE REDSHIFTED. What does this observation imply about the motion of galaxies relative to us?. Galaxy Morphology and Environment. Main relation – . E’s more common in clusters than field. f(E. ) = fraction of ellipticals . f(Sp. ) = fraction of spirals. regular, symmetric cluster – . f(E. Physicist and communicator at CERN. The dark side of the Universe. Shrimp Nebula. ©. VLT, European Space Observatory. Convince you all of the existence of dark matter. Review how one can catch dark matter. The universe is a big place, perhaps the biggest. . –Kurt Vonnegut. Cosmology. Cosmology is the study of the nature of the universe, how the universe began and how it will end, if it does. There is religious cosmology, and scientific cosmology. 4.f. Describe the hierarchical structure (stars, cluster, galaxies, galactic clusters) of the universe & examine the expanding universe to include its age & history & the modern techniques (e.g. radio, infrared, ultraviolet & x-ray astronomy) used to measure objects & distances in the universe. (DOK 2). Chapter 2. Stars. Section 1 Vocabulary. Spectrum. Apparent Magnitude. Absolute Magnitude. Light-Year. Parallax. Color of Stars. Red and Yellow. Cool. Blue . Warm. Blue flame hotter than yellow flame. 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. Laura . Magrini. INAF- . Osservatorio. . Astrofisico. di . Arcetri. In Our Galaxy. Open clusters (disc population): . Many (~2200 known clusters). . even more new candidates in the inner disc from infrared surveys .