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V641 CAS — A Symbiotic Candidate ?

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

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 1.0 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).

References

  1. Barbier,M.,1971,Astron. Astrophys.,14,396ADSGoogle Scholar
  2. Barbier,M.,1975,Astron. Astrophys. Suppl.,20,305Google Scholar
  3. Berthold,T.,1983,I.B.V.S., No. 2 4 4 3Google Scholar
  4. Guinan,E.,F.,McCook,G.,P. and Weisenberger,A.,G.,1982, I.E.V.S., No.2227Google Scholar
  5. Guinan,E.,F. Wacker,S.,W.,McCook,G.,P.,Harris,W.,T.,Robinson,C, DombrowsKi,E.,G. and Donahue,R.,A.,1986,I.B.V.S.,No.2925Google Scholar
  6. Shaw,J.,S. and Guinan,E.,F.,1986,B.A.A.S.,17,875ADSGoogle Scholar
  7. Tomov,T.,Mikolajewski,M. and Mikolajewska,J.,1986,I.B.V.S.,No.2921Google Scholar
  8. Warner,B.,1972,M.N.R.A.S.,159, 95ADSGoogle Scholar

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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