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IUE Observations of the Pulsation of RY SGR

Holm, Albert V.

The correlation of the onsets of RY Sgr's deep minima with pulsational phase suggests that the formation of dust is somehow driven by the pulsation. Observations were obtained using the International Ultraviolet Explorer (IUE) to investigate whether every pulsation cycle is accompanied by the condensation of small amounts of dust. During the 46-da…