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Understanding Dwarf Galaxies with a Heart of Steel

17 Dec 2018, 21:03 UTC
Understanding Dwarf Galaxies with a Heart of Steel ESO/Digitized Sky Survey 2 Dwarf galaxies are trickier than they appear. As their name suggests, they are basically small versions of regular galaxies. Their masses range between several million to several billion solar masses (for comparison, the Milky Way, which is a regular-sized galaxy, is thought to come in at approximately a trillion solar masses). They come in many shapes, including elliptical, spheroidal, and irregular, and they can be found either on their own (aka “field galaxies”), or orbiting larger galaxies or galaxy clusters (aka “satellite galaxies”; see Figure 1 for some examples of the Milky Way’s satellite dwarf galaxies).

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