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The Rotation Rate and the Surface Temperature of the Hot, Accreting White Dwarf in the Dwarf Nova RX Andromadae

Szkody, P.; Cheng, F. H.; La Dous, C. +3 more

We obtained Hubble GHRS phase-resolved spectroscopic observations of the dwarf nova RX Andromadae at three times in its outburst cycle: (1) near the end of an extraordinarily deep and long dwarf nova quiescence, 3 months after the last previous outburst; (2) during the rise to outburst; and (3) near the end of a decline from outburst. The spectral…

Hubble Space Telescope Studies of Exposed White Dwarfs in Dwarf Novae

Sion, Edward M.

Coordinated AAVSO optical observations and Hubble Space Telescope (HST) far ultraviolet (UV) spectroscopic observations of cataclysmic variables, during dwarf nova quiescence when the underlying white dwarf is exposed in the far UV, have yielded a number of new insights into accretional heating, photospheric abundances of the accreted atmosphere, …