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Where Are The Circumbinary Planets of Contact Binaries?

Autor: Demircan, O., Bulut, İ.

Up to present date, no circumbinary planet around contact binaries were discovered neither by transit method nor by the minima times variation, although they are known having third component stars around. We thus ask: where are the circumbinary plane

Externí odkaz: http://arxiv.org/abs/1411.7138

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Circumbinary Components of Contact Binaries

Autor: Demircan, O., Bulut, İ

The period changes of contact binaries obtained by the analysis of eclipse minima timing are found mostly chaotic in nature. However, they are representable by a few cyclic changes superposed on a secular change. The cyclic changes are caused most pr

Externí odkaz: http://arxiv.org/abs/1412.0682

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Study of Eclipsing Binary and Multiple Systems in OB Associations: I. Ori OB1a - IM Mon

Autor: Bakis, H., Bakis, V., Bilir, S., Mikulasek, Z., Zejda, M., Yaz, E., Demircan, O., Bulut, I.

All available photometric and spectroscopic observations were collected and used as the basis of a detailed analysis of the close binary IM Mon. The orbital period of the binary was refined to 1.19024249(0.00000014) days. The Roche equipotentials, fr

Externí odkaz: http://arxiv.org/abs/1105.4828

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Absolute Dimensions and Apsidal Motion of the Young Detached System LT Canis Majoris

Autor: Bakis, V., Bulut, I., Bilir, S., Bakis, H., Demircan, O., Hensberge, H.

New high resolution spectra of the short period (P~1.76 days) young detached binary LT CMa are reported for the first time. By combining the results from the analysis of new radial velocity curves and published light curves, we determine values for t

Externí odkaz: http://arxiv.org/abs/1007.4107

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Absolute Dimensions and Apsidal Motion of the Eccentric Binary V731 Cephei

Autor: Bakis, V., Zejda, M., Bulut, I., Wolf, M., Bilir, S., Bakis, H., Demircan, O., Lee, J. W., Slechta, M., Kucerova, B.

A detailed analysis of new and existing photometric, spectroscopic and spatial distribution data of the eccentric binary V731 Cep was performed. Spectroscopic orbital elements of the system were obtained by means of cross-correlation technique. Accor

Externí odkaz: http://arxiv.org/abs/0807.3820

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