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Stellar Kinematics of the Faintest Dwarf Galaxies Josh Simon Carnegie Observatories Marla Geha Beth Willman Louie Strigari Evan Kirby James Bullock Manoj Kaplinghat Erik Tollerud Joe Wolf... Slide 2 What Can Dwarf Galaxies Do For You? Wei-Hao Wang Johannes Schedler 2006 Dwarf irregularDwarf elliptical/spheroidal Slide 3 What Can Dwarf Galaxies Do For You? Dwarf galaxies are nearby Can be studied in great detail Dwarf galaxies are dark matter- dominated Perhaps they can be useful laboratories for studying dark matter Dwarf galaxies are astrophysically simple systems Slide 4 What Can Dwarf Galaxies Do For You? Dwarf galaxies are nearby Can be studied in great detail Dwarf galaxies are dark matter- dominated Perhaps they can be useful laboratories for studying dark matter Dwarf galaxies are astrophysically simple systems not as #%@#$ complicated as bigger galaxies Slide 5 What Can Dwarf Galaxies Do For You? Dwarf galaxies are nearby Can be studied in great detail Dwarf galaxies are dark matter- dominated Perhaps they can be useful laboratories for studying dark matter Dwarf galaxies are astrophysically simple systems not as #%@#$ complicated as bigger galaxies Cave man version: dwarf galaxies good. Big galaxies bad. Slide 6 Despite claims to the contrary, no Can You Measure Cusps in Dwarfs? Slide 7 Dwarf Galaxies Five Years Ago SDSS Luminosity: ~10 5 -10 6 L Distance: ~100 kpc Mass-to-light ratio: ~10-100 M /L Mean density: