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Lenticular galaxy
type of galaxy / From Wikipedia, the free encyclopedia
A lenticular galaxy is a type of galaxy. These galaxies have an elliptical shape and ill-defined spiral arms.[1] Basically, they are a combinations of spiral and elliptical galaxies.[1] Examples include the Cartwheel Galaxy and NGC 4479. They are disk galaxies that have lost most of its interstellar matter, therefore have very little ongoing star formation.[2] Because of this, they contain a lot of aging stars like elliptical galaxies.
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Despite being different shapes and a different galaxy type, lenticular and elliptical galaxies share common properties such as spectral features and sizes. They are also early-type galaxies that are slowly evolving.