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Circular Polarimetry of AM Herculis

Published online by Cambridge University Press:  12 April 2016

V. Piirola ,
O. Vilhu  and
I. Tuominen
V. Piirola
Affiliation:
University of Helsinki, Observatory and Astrophysics Laboratory
O. Vilhu
Affiliation:
University of Helsinki, Observatory and Astrophysics Laboratory
I. Tuominen
Affiliation:
University of Helsinki, Observatory and Astrophysics Laboratory

Abstract

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Circular polarimetry in the red and simultaneous photometric observations in the UBVRI bands during the period June 1-3, 1981, are discussed. The peak value of negative circular polarization PV ~ -15 % is stronger than observed in 1976-79. Variations in the shape of the polarization and light curves occur from night to night. The positive crossover and reversal of the sign of the circular polarization are only marginal. A probable explanation of the short term variations seems to be the changing shape and position of the accretion columns with respect to the magnetic axis

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 72: Cataclysmic Variables and Related Objects , 1983 , pp. 207 - 210
Copyright
Copyright © Reidel 1983

References

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