천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제35권1호
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- Pages.52.1-52.1
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- 2010
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- 1226-2692(pISSN)
Mass-Loss Rate in Short-Period Cataclysmic Variables
- ;
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김웅태
(서울대)
- Sirotkin, Fedir V. (Seoul National University) ;
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Kim, Woong-Tae
(Seoul National University)
- 발행 : 2010.04.06
초록
The relationship between orbital periods of cataclysmic variables (CV) and mass-loss rates of their donor stars is an important subject of theoretical researches. The observed donor's radii are oversized in comparison with those of isolated unperturbed stars of the same mass, which is thought to be a consequence of the mass-loss. Using the empirical mass-radius relation of CVs and the Hayashi theory for changes in effective temperature, orbital period, and luminosity of the donor with the stellar radius, we find the mass-loss rate of CVs as a function of the orbital period P. The derived mass-loss rate is more or less constant at 10-9.6-10-10M
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