Light Curve Stability and Period Behavior of the Contact Binary TZ Boo |
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| Authors: | M M Elkhateeb M I Nouh |
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| Institution: | 1. National Research Institute of Astronomy and Geophysics, 11421, Helwan, Cairo, Egypt
2. Physics Department, College of Science, Northern Border University, 1321, Arar, Saudi Arabia
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| Abstract: | New CCD observations of the eclipsing binary TZ Boo in BVR bands were carried out in 2006 (presented three new minima) and used together with all published minima to study and update the orbital period of the system TZ Boo by means of an (O–C) diagram. The period variation from 1926 to 2011 is represented by polynomial of eighth degree and indicates period variation of about 9.752 × 10???10 days/yr. We studied light curve stability over 85 yr covering all published observations in the V band and confirm the cyclic light curve variations. |
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