THE SIZE DISTRIBUTION OF KUIPER BELT OBJECTS FOR D ≳ 10 km
THE SIZE DISTRIBUTION OF KUIPER BELT OBJECTS FOR D ≳ 10 km
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DOI：
10.1088/0004-6256/137/1/72
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发表时间：
2009-01-01
影响因子：
5.3
通讯作者：
Kavelaars, J. J.
中科院分区：
文献类型：
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作者：
Fraser, Wesley C.;Kavelaars, J. J.
我们使用Subaru望远镜上的Suprime-cam对柯伊伯带进行了一次调查，覆盖范围约为1/3度（2），极限星等为m（50）（R），类似于26.8，并发现了36个新的柯伊伯带天体（KBO）。我们已经证实，柯伊伯带的光度函数（LF）必须打破以前观察到的。从LF中，我们推断了潜在的尺寸分布，并发现它与类似于4.8的大物体幂律斜率q（1）一致，在物体直径D（B）类似于60 km时，该斜率q（1）突破到类似于1.9的斜率q（2）假设6%的反照率。我们没有发现确凿的证据表明，KBO的大小分布与倾角i < 5 is different than that of those with i >5。我们讨论了这种测量的早期吸积在太阳系外和海王星迁移的情况下的影响。
We have performed a survey of the Kuiper belt covering similar to 1/3 deg(2) of the sky using Suprime-cam on the Subaru telescope, to a limiting magnitude of m(50)(R) similar to 26.8 and have found 36 new Kuiper belt objects (KBOs). We have confirmed that the luminosity function (LF) of the Kuiper belt must break as previously observed. From the LF, we have inferred the underlying size distribution and find that it is consistent with a large object power-law slope q(1) similar to 4.8 that breaks to a slope q(2) similar to 1.9 at object diameter D(b) similar to 60 km assuming 6% albedos. We have found no conclusive evidence that the size distribution of KBOs with inclinations i < 5 is different than that of those with i > 5. We discuss implications of this measurement for early accretion in the outer solar system and Neptune migration scenarios.