<abstract xmlns="http://www.w3.org/1999/xhtml">We analyzed the first set of complete CCD light curves of the W UMa type eclipsing binary IK Boo in the BVRI bands by using the PHOEBE code and deduced its first photometric parameters with, mass ratio <italic>q</italic> = 0.648 and orbital inclination <italic>i</italic> = 63<italic>o</italic>. We have applied a spotted model due to the light curves asymmetry. The system shows a distinct O’Connell effect. The best solution fit to the light curves suggested the influence of star spot(s) on both components. Such presence of star spot(s) is common among the RS CVn and W UMa chromospheric active late type stars.We also present an analysis of mid–eclipse time measurements of IK Boo. The analysis indicates a period decrease rate d<italic>P</italic>/dt = −1.68 × 10−7d/yr, which can be interpreted in terms of mass transfer of rate 3.1 × 10−7M⊙/<italic>yr</italic>, from the more massive to the less massive component.</abstract>

We analyzed the first set of complete CCD light curves of the W UMa type eclipsing binary IK Boo in the BVRI bands by using the PHOEBE code and deduced its first photometric parameters with, mass ratio q = 0.648 and orbital inclination i = 63o. We have applied a spotted model due to the light curves asymmetry. The system shows a distinct O’Connell effect. The best solution fit to the light curves suggested the influence of star spot(s) on both components. Such presence of star spot(s) is common among the RS CVn and W UMa chromospheric active late type stars.We also present an analysis of mid–eclipse time measurements of IK Boo. The analysis indicates a period decrease rate dP/dt = −1.68 × 10−7d/yr, which can be interpreted in terms of mass transfer of rate 3.1 × 10−7M⊙/yr, from the more massive to the less massive component.

Period Variation Study and Light Curve Analysis of the Eclipsing Binary GSC 02013-00288

Faculty of Sciences of El Azhar University

Applied Mathematics and Nonlinear Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

We analyzed the first set of complete CCD light curves of the W UMa type eclipsing binary IK Boo in the BVRI bands by using the PHOEBE code and deduced its...

Period Variation Study and Light Curve Analysis of the Eclipsing Binary GSC 02013-00288

Publié en ligne: 01 août 2016

Pages: 321 - 334

Reçu: 07 avr. 2016

Accepté: 01 août 2016

DOI: https://doi.org/10.21042/AMNS.2016.2.00027

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© 2016 N.S. Awadalla, M.A. Hanna, M.N. Ismail, I.A. Hassan, M.A. Elkhamisy, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Period Variation Study and Light Curve Analysis of the Eclipsing Binary GSC 02013-00288

Publié en ligne: 01 août 2016

Pages: 321 - 334

Reçu: 07 avr. 2016

Accepté: 01 août 2016

DOI: https://doi.org/10.21042/AMNS.2016.2.00027

Mots clésPut here your keywords

© 2016 N.S. Awadalla, M.A. Hanna, M.N. Ismail, I.A. Hassan, M.A. Elkhamisy, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
Put here your keywords