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[Virtual Colloquium] The Milky Way in Motion

Gurtina Besla (University of Arizona)

April 22 @ 3:30 PM - 4:30 PM

Our understanding of the motions of stars within our Milky Way and of the many small galaxies that orbit around it has changed dramatically over the past few years owing to new observational surveys and significant advancements in our understanding of galaxy structure. New surveys now enable us to precisely measure the motions of objects that orbit our Galaxy, like clusters of stars, satellite galaxies and stellar streams. The motions of these objects trace the so-called “dark matter” distribution, the unseen material that is expected to exist within and around our Galaxy, making up the bulk of its mass. However, connecting these data to theoretical models requires understanding the influence of the Milky Way’s largest satellite galaxy, the Large Magellanic Cloud (LMC). I will provide an overview of this evolving picture and how we can test the cold dark matter paradigm in the near future using next-generation surveys and simulations that include the LMC.

Please contact the department office for Zoom information.