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arXiv 0712.0839astro-ph
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在TrES巡天中发现的773颗双星的鉴别、分类和绝对性质

Identification, Classifications, and Absolute Properties of 773 Eclipsing Binaries Found in the TrES Survey

Jonathan Devor, David Charbonneau, Francis T. O'Donovan, Georgi Mandushev, Guillermo Torres

摘要:

近年来,我们目睹了测光时间序列数据的爆炸,收集这些数据的目的是为了寻找少数罕见的来源,例如凌日系外行星和引力微透镜。一旦梳理,这些数据往往被搁置一边,并没有进一步搜索的许多其他变量的来源,他们无疑包含。为此,我们描述了一个管道,旨在系统地分析这些数据,同时需要最少的用户交互。我们在跨大西洋系外行星调查数据集的一个子集上运行我们的管道,并使用它来识别和建模773个食双星系统。对于每个系统,我们对其光变曲线、颜色和理论等时线进行了联合分析。这一分析为我们提供了对双星绝对物理性质的估计,包括其恒星组成部分的质量和年龄,以及它们的物理分离和距离。我们确定了三种类型的食双星,特别感兴趣,值得进一步观察。第一类包括11个低质量的候选者,这可能有助于目前的努力,以解释观测和模型之间的差异,在主序底部的恒星。另外两类包括34颗具有偏心轨道的双星和20颗具有异常光变曲线的双星。最后,这个统一的目录使我们能够确定一些关系,提供进一步的限制二进制人口模型和潮汐循环理论。

英文摘要:

In recent years we have witnessed an explosion of photometric time-series data, collected for the purpose of finding a small number of rare sources, such as transiting extrasolar planets and gravitational microlenses. Once combed, these data are often set aside, and are not further searched for the many other variable sources that they undoubtedly contain. To this end, we describe a pipeline that is designed to systematically analyze such data, while requiring minimal user interaction. We ran our pipeline on a subset of the Trans-Atlantic Exoplanet Survey dataset, and used it to identify and model 773 eclipsing binary systems. For each system we conducted a joint analysis of its light curve, colors, and theoretical isochrones. This analysis provided us with estimates of the binary's absolute physical properties, including the masses and ages of their stellar components, as well as their physical separations and distances. We identified three types of eclipsing binaries that are of particular interest and merit further observations. The first category includes 11 low-mass candidates, which may assist current efforts to explain the discrepancies between the observation and the models of stars at the bottom of the main-sequence. The other two categories include 34 binaries with eccentric orbits, and 20 binaries with abnormal light curves. Finally, this uniform catalog enabled us to identify a number of relations that provide further constraints on binary population models and tidal circularization theory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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