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Special Presentations

Local Dwarf Galaxies and Near-Field Cosmology in ?CDM

Presented by: Erik Tollerud (STScI)
Category: Special Interest   Duration: 1 hour and 30 minutes   Broadcast date: February 06, 2017
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Dwarf galaxies are a frontier for new discoveries in both galaxy formation and cosmology. I will discuss work centered around connecting the ?CDM cosmology and its predictions to observations of dwarf galaxies at a variety of different scales of "dwarf". This includes both old and new methods of searching for Local Group and Local Volume dwarfs, and comparing the results of these searches to cosmological simulations. I will also describe work focused on characterizing these Local dwarfs, and whether this is in conflict with ?CDM. To provide wider context, I will also describe an ongoing program, the SAGA survey, focused on identifying a statistical sample of Local Group-like satellite systems, and provide initial results and future prospects.