首页> 外文期刊>Planetary and space science >Possible evidence for partial differentiation of asteroid Lutetia from Rosetta
【24h】

Possible evidence for partial differentiation of asteroid Lutetia from Rosetta

机译:罗塞塔号小行星黄体的部分分化的可能证据

获取原文
获取原文并翻译 | 示例
           

摘要

The petrologic diversity of meteorites demonstrates that planetesimals ranged from unmelted, variably metamorphosed aggregates to fully molten, differentiated bodies. However, partially differentiated bodies have not been unambiguously identified in the asteroid belt. New constraints on the density, composition, and morphology of 21 Lutetia from the Rosetta spacecraft indicate that the asteroid's high bulk density exceeds that of most known chondritic meteorite groups, yet its surface properties resemble those of some carbonaceous and enstatite chondrite groups. This indicates that Lutetia likely experienced early compaction processes like metamorphic sintering. It may have also partially differentiated, forming a metallic core overlain by a primitive chondritic crust.
机译:陨石的岩石学多样性表明,小行星的范围从未熔化的,易变质的聚集体到完全熔化的分化体。然而,在小行星带中尚未明确鉴定出部分分化的物体。 Rosetta航天器对21 Lutetia的密度,组成和形态提出了新的限制条件,表明该小行星的高堆积密度超过了大多数已知的球状陨石群的表面密度,但其表面性质却类似于某些碳质和辉长陨石群。这表明Lutetia可能经历了早期压实过程,例如变质烧结。它也可能已经部分分化,形成了由原始软骨壳覆盖的金属核。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号