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Blue giant

Hertzsprung–Russell diagramSpectral typeOBAFGKMLTBrown dwarfsWhite dwarfsRed dwarfsSubdwarfsMain sequence("dwarfs")SubgiantsGiantsRed giantsBlue giantsBright giantsSupergiantsRed supergiantHypergiantsabsolutemagni-tude(MV)In astronomy, a blue giant is a hot star with a luminosity class of III (giant) or II (bright giant).

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