Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.207..171e&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 207, no. 2, p. 171-182
Astronomy and Astrophysics
Astrophysics
6
Eclipsing Binary Stars, Mass Ratios, Stellar Luminosity, Stellar Spectrophotometry, Ubv Spectra, Ephemerides, Fourier Transformation, Light Curve
Scientific paper
Photoelectric U, B, and V observations of the eclipsing binary system FZ Orionis obtained by the author during three years 1984, 1985 and 1986 are presented and studied. The present photometry may settle the dispute regarding the class and the period of the system light variation bewteen the GCVS 1969 (Beta Lyr; p = 1.597 d) and Figer (1983) and Le Brogne et al (1984) (W UMa; p approximately equals 0.4 d) in favour of the latter. A period change was detected which may be elucidated as due to the presence of a third body and mass exchange between the components. Times of ten minima were determined and new ephemeris have been deduced. The present light and color curves were investigated and preliminary parameters for the system could be estimated.
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