Resonant stripping as the origin of dwarf spheroidal galaxies

  title={Resonant stripping as the origin of dwarf spheroidal galaxies},
  author={Elena D’Onghia and Gurtina Besla and Thomas J. Cox and Lars Hernquist},
Dwarf spheroidal galaxies are the most dark-matter-dominated systems in the nearby Universe and their origin is one of the outstanding puzzles of how galaxies form. Dwarf spheroidals are poor in gas and stars, making them unusually faint, and those known as ultra-faint dwarfs have by far the lowest measured stellar content of any galaxy. Previous theories require that dwarf spheroidals orbit near giant galaxies like the Milky Way, but some dwarfs have been observed in the outskirts of the Local… Expand
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