Type-cD galaxy
Galaxy morphology classification / From Wikipedia, the free encyclopedia
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The type-cD galaxy[1] (also cD-type galaxy,[2] cD galaxy[3]) is a galaxy morphology classification, a subtype of type-D giant elliptical galaxy. Characterized by a large halo of stars,[4] they can be found near the centres of some rich galaxy clusters.[5] They are also known as supergiant ellipticals[6] or central dominant galaxies.[7]