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On the periodicity of Hubble-Sandage objects in M 31

Published online by Cambridge University Press:  12 April 2016

G. R. Ivanov
G. R. Ivanov*
Affiliation:
Department of Astronomy, University of Sofia, 1126 Sofia, Bulgaria

Extract

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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.

The aim of the present paper is to discuss a possible periodicity in HSOs in M 31. We used phtometry from Hubble(1929), Sharov(1973, 1981), Rosino and Bianchini(1973), and added some observations taken during 1980-87. The latter were obtained with the 2-m Ritchey-Chretien-Coude and 0.5-m Schmidt telescopes of the Bulgarian National Astronomical Observatory – Rozhen.

Type
Section II: Poster Papers, A Brief List of Catalogs, and Index
Information
International Astronomical Union Colloquium , Volume 113: Physics of Luminous Blue Variables , 1989 , pp. 275 - 276
Copyright
Copyright © Kluwer 1989

References

Deeming, T.J. 1975, Ap. Space Sci., 36, 137.Google Scholar
De Jager, C. 1980, The Brightest Stars (D.Reidel: Dordrecht).Google Scholar
Hubble, E.P. 1929, Ap. J., 69, 103.Google Scholar
Hubble, E.P., and Sandage, A.R. 1953, Ap. J., 118, 353.Google Scholar
Kenyon, S.J., and Gallagher, J.S. III 1985, Ap. J., 290, 542.Google Scholar
Massey, P., Armandroff, T.E., and Conti, P.S. 1986, A.J., 92, 1303.CrossRefGoogle Scholar
Rosino, L., and Bianchini, A. 1973, Astr. Ap., 22, 453.Google Scholar
Sharov, A.S. 1973, Peremenye Zvezdy, 19, 3.Google Scholar
Sharov, A.S. 1981, Peremenye Zvezdy, 21, 485.Google Scholar