Hostname: page-component-5c6d5d7d68-wbk2r Total loading time: 0 Render date: 2024-08-18T15:34:46.684Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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

Baratta, G.B., Piro, L., Viotti, R., Cassatella, A., Altamore, A., Ricciardi, R., Friedjung, M.: 1985, ESA SP 239, p. 95.Google Scholar
Herbig, G.: 1980, IAU Circular no. 3535 Google Scholar
Jura, M., Helfand, D.J.: 1984, Ap. J. 287, 785 Google Scholar
Kafatos, M., Michalitsianos, A.G., Hollis, J.M.: 1986, Ap. J. Supplem. in press.Google Scholar
Kaler, J.B.: 1981, Ap. J. 245, 568 Google Scholar
Reimers, D., Cassatella, A.: 1985, Ap. J. 297, 275 Google Scholar
Solf, J., Ulrich, H.: 1985, Astr. Ap. 148, 274 Google Scholar
Viotti, R., Piro, L., Friedjung, M., Cassatella, A.: 1985, IAU Circular no. 4083.Google Scholar
Viotti, R., Rossi, L., Cassatella, A., Piro, L.: 1986, IAU Circular no. 4169.Google Scholar
Wallerstein, G., Greenstein, J.L.: 1980, Pub. astron. Soc. Pacific 92, 275 Google Scholar
Willson, L.A., Garnavich, P., Mattei, J.A.: 1981, Bull. Var. Stars no. 1961 Google Scholar