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首页> 外文期刊>Journal of the Mass Spectrometry Society of Japan >Periodicity of Cosmic-ray Exposure Ages of Iron Meteorites: Implication for Periodic Perturbation of the Asteroid Belt
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Periodicity of Cosmic-ray Exposure Ages of Iron Meteorites: Implication for Periodic Perturbation of the Asteroid Belt

机译:铁陨石的宇宙射线暴露年龄的周期性:对小行星带周期性扰动的影响

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摘要

Periodicity of the consmic-ray exposure ages has been recognized for the ~3He-deficient iron meteorites. These irons might have been thrown away from the asteroid Belt to the orbits close the the Sun. The intervals are similar to the orbital period of the Sun (-230 My) around the center of the Galaxy. Therefore, the periodicity of the exposure ages may be caused by the periodic perturbation of the Asteroid Belt due to the extrasolar stars.
机译:对于〜3He不足的铁陨石,已经认识到清扫射线暴露年龄的周期性。这些铁可能已经从小行星带扔到了靠近太阳的轨道上。间隔类似于银河系中心周围太阳的轨道周期(-230 My)。因此,暴露年龄的周期性可能是由于太阳系外恒星对小行星带的周期性扰动引起的。

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