Upsilon Sagittarii star

'Upsilon Sagittarii star' can also refer to...


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A form of interacting binary in which an evolved supergiant secondary is transferring hydrogen-deficient material on to a main-sequence primary. The type star is also classified as a low-amplitude (0.1 mag.) Beta Lyrae star, with a period of 138 days.

Subjects: Astronomy and Astrophysics.

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