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First Results of Continuous IUE Observations of Algol

Published online by Cambridge University Press:  07 August 2017

R. González-Riestra ,
A. Gimènez  and
E. F. Guinan
R. González-Riestra
Affiliation:
IUE Observatory VILSPA P.O. Box 50727 28080 Madrid Spain
A. Gimènez
Affiliation:
LAEFF VILSPA P.O. Box 50727 28080 Madrid Spain
E. F. Guinan
Affiliation:
Dpt. of Astronomy and Astrophysics Villanova University Villanova PA 19085 USA

Abstract

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We present the first results of a continuous monitoring of Algol with IUE along 1.5 orbital period (4 1/3 days). A total of 32 high resolution spectra were obtained. Algol represents the final slow stage of mass transfer. The spectra show the presence of high ionization lines (NV, SiIV, CIV) due to the heating of the gas that impacts the accreting star. The depth of the primary eclipse is larger at shorter wavelengths and the shape of the continuum out of the eclipse is compatible with a B star, ruling out the presence of an extra light source at these wavelengths.

Type
Oral and Contributed Papers
Information
Symposium - International Astronomical Union , Volume 151: Evolutionary Processes in Interacting Binary Stars , 1992 , pp. 285 - 288
Copyright
Copyright © Kluwer 1992 

References

Gimènez, A., González-Riestra, R., Guinan, E.F., Kondo, Y., McCluskey, G.E., Bradstreet, D.H., McCook, G.P., Dorren, J.D., Johansson, S., Sahade, J. (1990) in “Evolution in Astrophysics”, ESA SP-310, p. 383 Google Scholar
Guinan, E.F. (1989) Sp. Sci. Rev. 50, 35 Google Scholar
Guinan, E.F. (1990) in “Evolution in Astrophysics”, ESA SP-310, p. 73 Google Scholar
Kim, H. (1989) Ap. J. 342, 1061 Google Scholar