Chondrulelike objects in short-period comet 81P/wild 2

Tomoki Nakamura, Takaaki Noguchi, Akira Tsuchiyama, Takayuki Ushikubo, Noriko T. Kita, John W. Valley, Michael E. Zolensky, Yuki Kakazu, Kanako Sakamoto, Etsuko Mashio, Kentaro Uesugi, Tsukasa Nakano

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177 Citations (Scopus)

Abstract

The Stardust spacecraft returned cometary samples that contain crystalline material, but the origin of the material is not yet well understood. We found four crystalline particles from comet 81P/Wild 2 that were apparently formed by flash-melting at a high temperature and are texturally, mineralogically, and compositionally similar to chondrules. Chondrules are submillimeter particles that dominate chondrites and are believed to have formed in the inner solar nebula. The comet particles show oxygen isotope compositions similar to chondrules in carbonaceous chondrites that compose the middle-to-outer asteroid belt. The presence of the chondrulelike objects in the comet suggests that chondrules have been transported out to the cold outer solar nebula and spread widely over the early solar system.

Original languageEnglish
Pages (from-to)1664-1667
Number of pages4
JournalScience
Volume321
Issue number5896
DOIs
Publication statusPublished - Sep 19 2008
Externally publishedYes

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Cite this

Nakamura, T., Noguchi, T., Tsuchiyama, A., Ushikubo, T., Kita, N. T., Valley, J. W., ... Nakano, T. (2008). Chondrulelike objects in short-period comet 81P/wild 2. Science, 321(5896), 1664-1667. https://doi.org/10.1126/science.1160995