Study of period changes and possible light-time effect in ZZ CAS

Details Study of period changes and possible light-time effect in ZZ CAS Study of period changes and possible light-time effect in ZZ CAS

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991baicz..42..345k&link_type=abstract

Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 42, Nov. 1991, p. 345-349.

Astronomy and Astrophysics

Astronomy

5

B Stars, Eclipsing Binary Stars, Stellar Orbits, Stellar Systems, Variable Stars, Light Curve, Power Spectra, Stellar Luminosity

Scientific paper

Photoelectric epochs of primary and secondary minima of ZZ Cas are obtained. Changes in the orbital period are studied on the basis of observational material spanning a century. Light elements with a period term are derived. A possible light-time effect was detected, and it is shown that the apsidal motion is not present in this boundary system; no secular change of the orbital period was found.

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