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The energy transfer in W UMa binary stars

Published online by Cambridge University Press:  01 April 2008

Dengkai Jiang ,
Jiangcheng Wang ,
Zhanwen Han ,
Tianyu Jiang  and
Lifang Li
Dengkai Jiang
Affiliation:
National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China email: jiangdengkai@hotmail.com Graduate University of Chinese Academy Sciences, Beijing 100039, China
Jiangcheng Wang
Affiliation:
National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China email: jiangdengkai@hotmail.com
Zhanwen Han
Affiliation:
National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China email: jiangdengkai@hotmail.com
Tianyu Jiang
Affiliation:
National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China email: jiangdengkai@hotmail.com Graduate University of Chinese Academy Sciences, Beijing 100039, China
Lifang Li
Affiliation:
National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China email: jiangdengkai@hotmail.com
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Abstract

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The properties of W UMa binary stars are studied based on the well-determined physical parameters of 132 W UMa systems. It is found that the energy transfer rate has a maximum value at q ~ 0.58. The relation between the energy transfer rate and the temperature deviation is also investigated, and the temperature of the secondary component is related to the energy transfer rate.

Keywords

stars: evolution—(stars:) binaries: close—(stars:) binaries: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S252: The Art of Modeling Stars in the 21st Century , April 2008 , pp. 433 - 434
Copyright
Copyright © International Astronomical Union 2008

References

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