Period change of the eclipsing binary CQ CEP

Details Period change of the eclipsing binary CQ CEP Period change of the eclipsing binary CQ CEP

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pazh...13..417a&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 13, May 1987, p. 417-422. In Russian. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

2

Cepheid Variables, Eclipsing Binary Stars, Secular Variations, Wolf-Rayet Stars, Astronomical Photography, Electrophotometry, Errors, Minima, Rates (Per Time)

Scientific paper

The analysis of period changes in the eclipsing Wolf-Rayet binary system CQ Cep (WN7+O7, p ≈ 1d.64) is carried out using photographic and photoelectric observations of the years 1899 - 1985. The modified Hertzsprung method for calculating O-C values has been used. It is concluded that the period of CQ Cep has been decreasing in the time interval of 1899 - 1985 on an average at the rate of p= -0.014±0.004 s/year.

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