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Two distinct populations of Kuiper-belt objects

机译:两个不同的柯伊伯带对象

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摘要

The discovery of the first member of the Kuiper belt—a formerly hypothetical ancient reservoir of objects located beyond Neptune's orbit—started a revolution in our understanding of the outer Solar System: there is no longer a sharp edge at Pluto's orbit. About 60 Kuiper-belt objects, intermediate in size between comets and planets, are now known to exist on stable circular orbits around the Sun, and no doubt many more objects await discovery. But owing to the recent discovery and intrinsic faintness of these objects, little has been done to explore their physical and chemical properties. Here we report the results of a two-year survey of the broad-band optical colours of about one-quarter of the known Kuiper-belt objects. We find that their colours indicate the presence of two distinct populations: one consists of objects whose surface colours are only slightly redder than the colour of the Sun, while the other consists of the reddest objects known in the Solar System.
机译:柯伊伯带的第一个成员的发现-一个以前假设的远古海王星位于天王星轨道之外的物体的储藏库-引发了我们对太阳系外部认识的一场革命:冥王星的轨道不再有锋利的边缘。现在已知大约有60个柯伊伯带天体,大小介于彗星和行星之间,存在于围绕太阳的稳定圆形轨道上,毫无疑问,还有更多的天体正在等待发现。但是,由于最近发现了这些物体并使其固有的模糊性,几乎没有做过任何探索其物理和化学性质的工作。在这里,我们报告了对大约四分之一的柯伊伯带物体的宽带光学色彩进行的为期两年的调查结果。我们发现它们的颜色表示存在两个不同的种群:一个由表面颜色仅比太阳颜色稍红的物体组成,而另一种由太阳系中已知的最红色物体组成。

著录项

  • 来源
    《Nature》 |1998年第6671期|p.49-51|共3页
  • 作者

    S. C. Tegler; W. Romanishin;

  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

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