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The IUE Observations Of W UMa†

Published online by Cambridge University Press:  12 April 2016

S.M. Rucinski ,
J.E. Pringle  and
J.A.J. Whelan
S.M. Rucinski
Affiliation:
Max Planck Institute for Astrophysics, Munich
J.E. Pringle
Affiliation:
Institute of Astronomy, Cambridge
J.A.J. Whelan
Affiliation:
Institute of Astronomy, Cambridge

Abstract

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The low resolution, phase averaged SWP spectra reveal the trend of increased transition-region line intensities for higher temperatures of ion formation which was previously observed for other active systems. Two series of low resolution LWR spectra covering two full orbital periods have been used to check the photometric results from the ANS satellite and a good agreement is found for the 2200 Å band. Wavelength shifts and changes in the intensity of the blended Mg II emission feature are not inconsistent with the ANS result that the more massive component is the more active one in the W UMa system.

Type
Part III: Evolutionary Processes in Close Binary Systems
Information
International Astronomical Union Colloquium , Volume 69: Binary and Multiple Stars as Tracers of Stellar Evolution , 1982 , pp. 309 - 315
Copyright
Copyright © Reidel 1982

Footnotes

*

On leave from the Warsaw University Observatory.

+

While this paper was in the press, Dr. Whelan passed away on 21 December 1981, aged 35 years.

†

Based on observations collected at the Villafranca Satellite Tracking Station of the European Space Agency.

References

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Rucinski, S.M., Gondhalekhar, P., Pringle, J.E., Whelan, J.A.J.: 1980, Inf. Bull. Var. Stars, No. 1844.Google Scholar