Light curve and O-C diagram and analysis of RZ Cassiopeiae

Details Light curve and O-C diagram and analysis of RZ Cassiopeiae Light curve and O-C diagram and analysis of RZ Cassiopeiae

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.187...57h&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 187, Jan. 1992, p. 57-74. Research supported by Blevisz, Befa, and Szeged

Astronomy and Astrophysics

Astrophysics

13

Apsides, Astronomical Photometry, Eclipsing Binary Stars, Light Curve, Stellar Spectrophotometry, Main Sequence Stars, Periodic Variations, Stellar Spectra, Subgiant Stars

Scientific paper

The light curve and the period variation of RZ Cas are analyzed. The new elements of the system obtained through the frequency-domain method do not differ significantly from the previous results as this Algol-type eclipsing binary has a very stable light curve. The Fourier analysis of the photoelectric points of the O-C diagram shows that the period variation contains four periodic components. Their reality was investigated using calculations based on the light-time effect and the apsidal motion hypothesis. It is suggested that the multiple nature of the system may be real, but with the computed masses and orbits it seems to be unstable.

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