Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ap%26ss.131..771v&link_type=abstract
(IAU, Colloquium on Cataclysmic Variables. Recent Multi-Frequency Observations and Theoretical Developments, 93rd, Bamberg, West
Astronomy and Astrophysics
Astronomy
Binary Stars, Light Curve, Mira Variables, Spaceborne Astronomy, Stellar Spectrophotometry, Symbiotic Stars, Accretion Disks, Exosat Satellite, Iue, Radiant Flux Density, Ultraviolet Spectra, X Ray Spectra
Scientific paper
Coordinated IUE and EXOSAT observations of the symbiotic Mira R Aqr, made in June and December 1985 are discussed. A weak X-ray flux has been for the first time unambiguously detected without any significant change with the Mira light curve. Also the UV spectrum of the central object has not varied, while the presence of high ionization lines in the spectrum of the jet-like feature is confirmed. The data are discussed in the light of a model in which the jet is preexisting material illuminated by the recently increased X and UV radiation from the inner edge of the accretion disk around the degenerate companion of the Mira primary.
Cassatella Angelo
Friedjung Michael
Piro Luigi
Viotti Roberto
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