Ultraviolet activity in EG Andromedae

Astronomy and Astrophysics – Astronomy

Scientific paper

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17

Binary Stars, Giant Stars, Stellar Spectrophotometry, Ultraviolet Spectroscopy, Variable Stars, Iue, Light (Visible Radiation), Spectral Energy Distribution, Stellar Temperature

Scientific paper

The authors show that the symbiotic star EG And is an active variable in the ground-based ultraviolet. In five nights of observation spaced over one year, the full range at Strömgren u was 0m.97, as compared to only 0m.13 at y. The energy distribution in the visual is typical of a cool giant, but a significant component of the radiation at u appears to come from the hot active source seen with the IUE.

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