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Exosat and IUE Observations of the Symbiotic Binary R Aquarii during Maximum and Minimum

Published online by Cambridge University Press:  12 April 2016

R. Viotti ,
L. Piro ,
M. Friedjung  and
A. Cassatella
R. Viotti
Affiliation:
Istituto Astrofisica Spaziale, CNR, Frascati, Italy
L. Piro
Affiliation:
Istituto Astrofisica Spaziale, CNR, Frascati, Italy
M. Friedjung
Affiliation:
Istituto Astrofisica Spaziale, CNR, Frascati, Italy
A. Cassatella
Affiliation:
Istituto Astrofisica Spaziale, CNR, Frascati, Italy

Abstract

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Coordinated IUE and EXOSAT observations of the symbiotic Mira R Aqr, made in June and December 1985, at phases 0.0 and 0.5 of the Mira light curve, 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 (NV and HeII) 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.

Type
VII. Related Objects
Information
International Astronomical Union Colloquium , Volume 93: Cataclysmic Variables: Recent Multi-Frequency Observations and Theoretical Developments , 1987 , pp. 771 - 774
Copyright
Copyright © Reidel 1987

References

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