CAOSP abstracts, Volume: 36, No.: 1, year: 2006

Author(s): Awadalla, N.S.; Hanna, M.A.; Saad, A.S.; Morcos, A.B.
Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 36, no. 1, p. 47-57.
Date: 02/2006
Title: Study of magnetic activity and period variations of TZ Bootis system
Keyword(s): contact binaries, period variation, O'Connell effect, magnetic activity, TZ Boo
Pages: 47 -- 57

Abstract: The possibility that the orbital period variation is connected with the light curve changes has been investigated for the contact binary solar--like system TZ Boo. The O'Connell effect and the minimum depth variation have been studied. The results may be through a light on the magnetic activity of the system. The system possesses the O'Connell effect with a cycle of 4.6 years while the depths variation has an 8.1 year cycle. The (O-C) residual variations may be caused by a magnetic activity cycle mechanism, but it remains speculative.

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