标题： 散落柯伊伯带的族群 显示英文标题

标题： Population of the Scattered Kuiper Belt

摘要： 我们报告了从黄道带宽场巡天中发现的三个新的散盘天体（SKBOs）。这项持续的巡天到目前为止已经覆盖了20.2平方度的面积，极限红 magnitude 为23.6。我们将这项新巡天的数据与夏威夷大学2.2米望远镜上进行的一项现有巡天数据相结合，以限制散盘天体的数量和质量。SKBOs的特点是具有较大的偏心率、接近35天文单位的近日点以及半长轴大于50天文单位。利用最大似然模型，我们估计直径大于100公里的SKBOs总数为N = 3.1(+1.9/-1.3)×10^4（1σ），并且SKBOs的总质量约为0.05地球质量，表明SKBOs的数量和质量与50天文单位以内柯伊伯带相似。 显示英文摘要

摘要： We present the discovery of three new Scattered Kuiper Belt Objects (SKBOs) from a wide-field survey of the ecliptic. This continuing survey has to date covered 20.2 square degrees to a limiting red magnitude of 23.6. We combine the data from this new survey with an existing survey conducted at the University of Hawaii 2.2m telescope to constrain the number and mass of the SKBOs. The SKBOs are characterized by large eccentricities, perihelia near 35 AU, and semi-major axes > 50 AU. Using a maximum-likelihood model, we estimate the total number of SKBOs larger than 100 km in diameter to be N = 3.1 (+1.9/-1.3) x 10^4 (1 sigma) and the total mass of SKBOs to be about 0.05 Earth masses, demonstrating that the SKBOs are similar in number and mass to the Kuiper Belt inside 50 AU.