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Rosemary Wyse (John Hopkins University)

The Cosmological Context of the Milky Way
When May 12, 2016 from 02:30 PM to 03:30 PM
What
  • Colloquium
Where SH Lecture Hall
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The Milky Way is a typical large disc galaxy and can be used as a template for understanding how galaxies form. We can obtain much more detailed information about the stars that make up our Galaxy than we can for more distant galaxies. Stars retain memory of the conditions in which they formed and stars of mass like the Sun live for essentially the age of the Universe. We can thus use old stars nearby to probe the early epochs of galaxy evolution, in a very complementary way to direct observations of galaxies at high redshift. I will discuss how observations of stars in the Milky Way and in its satellite galaxies shed light on fundamental questions such as the nature of the dark matter that dominates how galaxies form and evolve, and the stellar initial mas function at high redshift.