On the Periodicity of Hubble-Sandage Objects in M 31

  • G. R. Ivanov
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 157)


The spectral and photometric characteristics of the Hubble-Sandage objects (HSO) are similar to those of the η Car and S Dor variables. They are actually referred to as S Dor-type in the General Catalogue of Variable Stars. Their light variations differ from star to star.


Variable Star Light Variation General Catalogue Schmidt Telescope Intrinsic Colour 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • G. R. Ivanov
    • 1
  1. 1.Department of AstronomyUniversity of SofiaSofiaBulgaria

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