Gamma Cassiopeiae star

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A type of rapidly rotating, irregular variable of spectral type Be with an outflow of material from its equatorial region; abbr. GCAS. The formation of equatorial rings or disks is often accompanied by brightness variations of up to 1.5 mag. The prototype is the subgiant Be star Gamma Cassiopeiae.

Subjects: Astronomy and Astrophysics.

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