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This Week at Physics

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Event Number 3002

  Thursday, April 11th, 2013

Astronomy Colloquium
"Examining Galaxy Formation and Evolution with the Milky Way and Its Satellites"
Time: 3:30 pm
Place: 4421 Sterling Hall
Speaker: David Nidever, University of MI
Abstract: How galaxies form and evolve remains one of the cornerstone questions in our understanding of the universe on grand scales. The Milky Way and its satellites are a local laboratory for studying the evolution and properties of galaxies of various masses in great detail. I will highlight some recent results from three projects that are providing new insights into the structure and formation history of the Magellanic Clouds and the Milky Way. First, an extensive study of the stellar periphery of the Magellanic Clouds reveals that they are much more extended than previously thought which has implications for structure formation on small scales. Second, I have undertaken a large-scale survey to map out the gaseous Magellanic Stream. These observations provide important constraints on the orbits and
interaction history of the Magellanic Clouds with each other and the Milky Way. Finally, I will discuss SDSS-III/APOGEE, a near-infrared, high-resolution spectroscopic survey of ~100,000 stars in the Milky Way. With only the first year of data, APOGEE has already produced a number of important results especially in the Galactic bulge, with many more to come.
Host: Matt Haffner
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