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The Symbiotic Binary System AG Pegasi

Published online by Cambridge University Press:  14 August 2015

Charles D. Keyes  and
Mirek J. Plavec
Charles D. Keyes
Affiliation:
Department of Astronomy, University of California Los Angeles, CA 90024, U.S.A.
Mirek J. Plavec
Affiliation:
Department of Astronomy, University of California Los Angeles, CA 90024, U.S.A.

Abstract

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A complete coverage of the spectrum of AG Peg has been obtained between wavelengths 1200 − 7000 A by us, and can be supplemented by IR photometric observations by others. Our IUE observations yield a lower value of E(B-V), about 0.12. The two stellar components are easily recognized, but their characteristics are still rather uncertain.

The cool component may be a normal M1.7 III giant, but the temperature and luminosity of the hot star remain largely indeterminate. Firstly, there are no good models for a hot subdwarf, and secondly, it is difficult to determine the relative contribution of the star itself and the surrounding hydrogen cloud.

The emission lines observed in the UV have double or triple structure, indicating two or three distinct emitting regions.

Type
X. … and The Rest (Symbiotics, Supergiants, Planetaries, Population II Systems)
Information
Symposium - International Astronomical Union , Volume 88: Close Binary Stars: Observations and Interpretation , 1980 , pp. 535 - 542
Copyright
Copyright © Reidel 1980 

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