As any other kind of galaxy, dwarfs can be found in the field (isolated dwarfs) as well as orbiting around a more massive companion (satellite dwarf). The closest dwarfs from Earth ... Such a technique is called “abundance matching” and has provided very useful guidelines to our galaxy formation models. read more
Just because that galaxy (dwarf galaxy) composed of up to small amount of star when compare to the others. For example, number of stars in an dwarf galaxy is several billion while the number of normal one (Milky Way - our galaxy) is 200 to 400 billion. read more
A dwarf galaxy is a small galaxy composed of about 100 million up to several billion stars, a small number compared to the Milky Way's 200–400 billion stars. The Large Magellanic Cloud, which closely orbits the Milky Way and contains over 30 billion stars, is sometimes classified as a dwarf galaxy; others consider it a full-fledged galaxy. read more