Abstract
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 1.0mduring 1979-1986. Slow variations in the brightness with a mean period 310d and variable amplitude of 0.3m–0.9m ph are established by Berthold(1983).
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References
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© 1988 Kluwer Academic Publishers
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Tomov, T., Mikolajewski, M. (1988). V641 CAS — A Symbiotic Candidate ?. In: Mikolajewska, J., Friedjung, M., Kenyon, S.J., Viotti, R. (eds) The Symbiotic Phenomenon. Astrophysics and Space Science Library, vol 145. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2969-2_3
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DOI: https://doi.org/10.1007/978-94-009-2969-2_3
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