The Orbit and Occultations of KH 15D
The Orbit and Occultations of KH 15D
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KH 15D 的轨道和掩星
DOI：
10.1086/503417
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Marc J. Kuchner
中科院分区：
文献类型：
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作者：
J. Winn;C. Hamilton;William J. Herbst;Jennifer L. Hoffman;M. Holman;John A. Johnson;Marc J. Kuchner
前主序星双星星星KH 15 D的异常流量变化被归因于环双星盘的掩星。我们测试这个理论是否与新的可用数据，包括最近的径向速度测量，CCD测光在过去的十年中，在过去的50年中，摄影测光兼容。我们发现该模型是成功的，经过两个改进：一个更现实的运动的掩星功能和光环周围的每个星星，可能代表散射的磁盘。掩星的特征是非常尖锐的边缘，提高了尘埃盘中的尘埃已经沉降成薄层的可能性，并提供了一个工具，用于精细绘制金牛座T星星的直接环境。然而，机会之窗正在关闭，因为目前可见的星星可能早在2008年就被隐藏在所有轨道阶段。
The unusual flux variations of the pre-main-sequence binary star KH 15D have been attributed to occultations by a circumbinary disk. We test whether or not this theory is compatible with newly available data, including recent radial velocity measurements, CCD photometry over the past decade, and photographic photometry over the past 50 years. We find the model to be successful, after two refinements: a more realistic motion of the occulting feature and a halo around each star that probably represents scattering by the disk. The occulting feature is exceptionally sharp edged, raising the possibility that the dust in the disk has settled into a thin layer and providing a tool for fine-scale mapping of the immediate environment of a T Tauri star. However, the window of opportunity is closing, as the currently visible star may be hidden at all orbital phases by as early as 2008.