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>Finding White Dwarfs with Transit Searches
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Finding White Dwarfs with Transit Searches
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机译:通过中转搜索找到白矮星
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摘要
We make predictions for the rate of discovery of eclipsing white dwarf-main sequence (WD-MS) binaries in terrestrial-planet transit searches, taking the planned Kepler and Eddington missions as examples. We use a population synthesis model to characterize the Galactic WD-MS population, and we find that, despite increased noise due to stellar variability compared with the typical planetary case, discovery of >100 non-accreting, eclipsing WD-MS systems is likely using Kepler and Eddington, with periods of 2-20 days and transit amplitudes of |delta m|~0.0003-0.00003 magnitudes. Follow-up observations of these systems could accurately test the theoretical white dwarf mass-radius relation or theories of binary star evolution.
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机译:我们以计划的开普勒和爱丁顿飞行任务为例,对在地行星过境搜索中发现的白矮星主序列(WD-MS)双星的发现速率做出了预测。我们使用种群综合模型来表征银河WD-MS种群,我们发现,尽管与典型的行星案例相比,由于恒星变异性导致噪声增加,但发现使用> 100的无沉淀,黯淡的WD-MS系统还是有可能的开普勒和爱丁顿,周期为2-20天,过渡幅度为| delta m |〜0.0003-0.00003量级。对这些系统的后续观测可以准确地检验理论上的白矮星质量半径关系或双星演化理论。
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