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外文期刊>The Astrophysical journal
>THE TAOS PROJECT: UPPER BOUNDS ON THE POPULATION OF SMALL KUIPER BELT OBJECTS AND TESTS OF MODELS OF FORMATION AND EVOLUTION OF THE OUTER SOLAR SYSTEM
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THE TAOS PROJECT: UPPER BOUNDS ON THE POPULATION OF SMALL KUIPER BELT OBJECTS AND TESTS OF MODELS OF FORMATION AND EVOLUTION OF THE OUTER SOLAR SYSTEM
We have analyzed the first 3.75 years of data from the Taiwanese American Occultation Survey (TAOS). TAOS monitors bright stars to search for occultations by Kuiper Belt objects (KBOs). This data set comprises 5 × 105 star hours of multi-telescope photometric data taken at 4 or 5 Hz. No events consistent with KBO occultations were found in this data set. We compute the number of events expected for the Kuiper Belt formation and evolution models of Pan & Sari, Kenyon & Bromley, Benavidez & Campo Bagatin, and Fraser. A comparison with the upper limits we derive from our data constrains the parameter space of these models. This is the first detailed comparison of models of the KBO size distribution with data from an occultation survey. Our results suggest that the KBO population is composed of objects with low internal strength and that planetary migration played a role in the shaping of the size distribution.
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机译：我们已经分析了来自台湾美国掩星调查（TAOS）的前3.75年的数据。 TAOS监视明亮的星星，以搜索柯伊伯带天体（KBO）的掩星。该数据集包括以4或5 Hz拍摄的5 x 105星形小时的多望远镜光度数据。在该数据集中未发现与KBO掩星相符的事件。我们计算了Pan＆Sari，Kenyon和Bromley，Benavidez和Campo Bagatin和Fraser的柯伊伯带形成和演化模型的预期事件数。与我们从数据中得出的上限进行比较会限制这些模型的参数空间。这是KBO大小分布模型与掩星调查数据的首次详细比较。我们的结果表明，KBO种群由内部强度较低的物体组成，并且行星迁徙在大小分布的塑造中发挥了作用。
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