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FG sagittae, a test of the theory of evolution of double shell source stars

Published online by Cambridge University Press:  04 August 2017

Yu. A. Fadeyev
Yu. A. Fadeyev*
Affiliation:
Astronomical Council, USSR Academy of Sciences

Extract

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FG Sge is a unique stellar object possessing a number of unusual properties which are as follows: (1) FG Sge is a core of a planetary nebula, (2) at least since 1894 this star has crossed the HR diagram from the left to the right, (3) the atmosphere of FG Sge was enriched in s-elements, (4) FG Sge is a pulsating variable the period of which progressively increases from 15 days in 1962 to 110 days in 1980.

Type
III. BINARITY, PULSATION, ROTATION AND MIXING
Information
Symposium - International Astronomical Union , Volume 105: Observational Tests of the Stellar Evolution Theory , 1984 , pp. 471 - 473
Copyright
Copyright © Reidel 1984 

References

Fadeyev, Yu.A.: 1982, Astrophys. Space Sci. 86, pp. 143.Google Scholar
Flannery, B. and Herbig, G.H.: 1973, Astrophys. J. 183, pp. 489.CrossRefGoogle Scholar
Paczynski, B.: 1970, Acta Astron. 20, pp. 47.Google Scholar
Paczynski, B.: 1971, Acta Astron. 21, pp. 417.Google Scholar
Paczynski, B.: 1975, Astrophys. J. 202, pp. 558.Google Scholar
Stone, R.P.S.: 1979, Publ. Astron. Soc. Pacific 91, pp. 389.CrossRefGoogle Scholar