V641 CAS — A Symbiotic Candidate ?

  • T. Tomov
  • M. Mikolajewski
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 145)


The light variability of V641 Cas was discovered by Guinan et al. (1982). Spectral investigations were made earlier by Barbier(1971,1975), wich classified it as a VV Cep-type star and suggested that the V641 Cas is a binary system consisting of M3Ia supergiant and a B type star. Shaw and Guinan(1985) estimated the spectral class of the companion as B2.5. Recently Guinan et al. (1986) reported about semiregular changes with maximal amplitude of about 1.0 m during 1979-1986. Slow variations in the brightness with a mean period 310d and variable amplitude of 0.3 m –0.9 m ph are established by Berthold(1983).


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Copyright information

© Kluwer Academic Publishers 1988

Authors and Affiliations

  • T. Tomov
    • 1
  • M. Mikolajewski
    • 2
  1. 1.National Astronomical Observatory RozhenSmoljanBulgaria
  2. 2.Institute of AstronomyN. Copernicus UniversityTorunPoland

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