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UV Observations of dwarf novae in quiescence - effects of evaporation?
C. la Dous 1,
F. Meyer 2 and
E. Meyer-Hofmeister 2
Received 30 May 1996 / Accepted 5 September 1996
IUE spectra of dwarf novae in quiescence provide information on the inner part of the accretion disk. In the framework of the evaporation model the mass flow of about is understood as accretion via a hot corona above the cool inert disk. The UV radiation originates from the transition region between disk and corona, and from the white dwarf. If it is possible to separate the radiation from white dwarf and disk, the remaining disk spectrum allows conclusions on where the dominant emitting disk area is located. We compare results from observations of different systems with the prediction of the evaporation model.
Key words: accretion disks ultraviolet: stars cataclysmic variables white dwarfs
Send offprint requests to: E. Meyer-Hofmeister
Online publication: June 30, 1998