Presented By: Saturday Morning Physics
Saturday Morning Physics | Hunting for Evidence of Galactic Cannibalism
Sarah Loebman, Assistant Professor in Astronomy, Michigan Society of Fellows Postdoctoral Scholar (U-M)
Our home, the Milky Way, is surrounded by a host of small dwarf galaxies. Currently one of these galaxies, Sagittarius Dwarf Spheroidal, is being striped apart - cannibalized - by the Milky Way. Theory suggests that this violent act is not unique, and that the diffuse stellar halo that surrounds the Milky Way is in fact a tidal graveyard of destroyed dwarf galaxies. Dr. Loebman will discuss how astronomers study the stellar halo and hunt for evidence of our cannibalistic past. She will also highlight tantalizing clues of a cataclysmic epoch in the Milky Way's history and how new observations from Gaia may cause us to rethink our distant past.
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