Elemental Compositions of Comet 81P/Wild 2 Samples Collected by Stardust

Elemental Compositions of Comet 81P/Wild 2 Samples Collected by Stardust
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DOI：
10.1126/science.1136141
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发表时间：
2006-12
期刊：
Science
影响因子：
56.9
通讯作者：
G. Flynn;P. Bleuet;J. Borg;J. Bradley;F. Brenker;S. Brennan;J. Bridges;D. Brownlee;E. Bullock;M. Burghammer;B. Clark;Z. Dai;C. Daghlian;Z. Djouadi;S. Fakra;T. Ferroir;C. Floss;I. Franchi;Z. Gainsforth;J. Gallien;P. Gillet;P. Grant;G. Graham;S. Green;F. Grossemy;P. Heck;G. Herzog;P. Hoppe;F. Hörz;J. Huth;K. Ignatyev;H. Ishii;K. Janssens;D. Joswiak;A. Kearsley;H. Khodja;A. Lanzirotti;J. Leitner;L. Lemelle;H. Leroux;K. Luening;G. MacPherson;K. Marhas;M. Marcus;G. Matrajt;Tomoki Nakamura;K. Nakamura-messenger;T. Nakano;M. Newville;D. Papanastassiou;P. Pianetta;W. Rao;C. Riekel;F. Rietmeijer;D. Rost;C. Schwandt;T. See;J. Sheffield-Parker;A. Simionovici;I. Sitnitsky;C. Snead;F. Stadermann;T. Stephan;R. Stroud;J. Susini;Yoshio Suzuki;S. Sutton;S. Taylor;N. Teslich;D. Troadec;P. Tsou;A. Tsuchiyama;K. Uesugi;B. Vekemans;E. Vicenzi;L. Vincze;A. Westphal;P. Wozniakiewicz;E. Zinner;M. Zolensky
G. Flynn;P. Bleuet;J. Borg;J. Bradley;F. Brenker;S. Brennan;J. Bridges;D. Brownlee;E. Bullock;M. Burghammer;B. Clark;Z. Dai;C. Daghlian;Z. Djouadi;S. Fakra;T. Ferroir;C. Floss;I. Franchi;Z. Gainsforth;J. Gallien;P. Gillet;P. Grant;G. Graham;S. Green;F. Grossemy;P. Heck;G. Herzog;P. Hoppe;F. Hörz;J. Huth;K. Ignatyev;H. Ishii;K. Janssens;D. Joswiak;A. Kearsley;H. Khodja;A. Lanzirotti;J. Leitner;L. Lemelle;H. Leroux;K. Luening;G. MacPherson;K. Marhas;M. Marcus;G. Matrajt;Tomoki Nakamura;K. Nakamura-messenger;T. Nakano;M. Newville;D. Papanastassiou;P. Pianetta;W. Rao;C. Riekel;F. Rietmeijer;D. Rost;C. Schwandt;T. See;J. Sheffield-Parker;A. Simionovici;I. Sitnitsky;C. Snead;F. Stadermann;T. Stephan;R. Stroud;J. Susini;Yoshio Suzuki;S. Sutton;S. Taylor;N. Teslich;D. Troadec;P. Tsou;A. Tsuchiyama;K. Uesugi;B. Vekemans;E. Vicenzi;L. Vincze;A. Westphal;P. Wozniakiewicz;E. Zinner;M. Zolensky
中科院分区：
综合性期刊1区
文献类型：
--
作者：
G. Flynn;P. Bleuet;J. Borg;J. Bradley;F. Brenker;S. Brennan;J. Bridges;D. Brownlee;E. Bullock;M. Burghammer;B. Clark;Z. Dai;C. Daghlian;Z. Djouadi;S. Fakra;T. Ferroir;C. Floss;I. Franchi;Z. Gainsforth;J. Gallien;P. Gillet;P. Grant;G. Graham;S. Green;F. Grossemy;P. Heck;G. Herzog;P. Hoppe;F. Hörz;J. Huth;K. Ignatyev;H. Ishii;K. Janssens;D. Joswiak;A. Kearsley;H. Khodja;A. Lanzirotti;J. Leitner;L. Lemelle;H. Leroux;K. Luening;G. MacPherson;K. Marhas;M. Marcus;G. Matrajt;Tomoki Nakamura;K. Nakamura-messenger;T. Nakano;M. Newville;D. Papanastassiou;P. Pianetta;W. Rao;C. Riekel;F. Rietmeijer;D. Rost;C. Schwandt;T. See;J. Sheffield-Parker;A. Simionovici;I. Sitnitsky;C. Snead;F. Stadermann;T. Stephan;R. Stroud;J. Susini;Yoshio Suzuki;S. Sutton;S. Taylor;N. Teslich;D. Troadec;P. Tsou;A. Tsuchiyama;K. Uesugi;B. Vekemans;E. Vicenzi;L. Vincze;A. Westphal;P. Wozniakiewicz;E. Zinner;M. Zolensky

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我们测量了气凝胶中 23 个颗粒和铝箔中七个陨石坑中残留物的元素成分，这些残留物是在星尘号航天器穿过 81P/Wild 2 彗发彗发期间收集的。这些颗粒在分析的最大尺寸（约 180 ng）下具有化学异质性。这种 Wild 2 材料的平均元素成分与 CI 陨石成分一致，CI 陨石成分被认为代表了太阳系的整体成分，元素 Mg、Si、Mn、Fe 和 Ni 为 35%，Ca 和 Ti 为 60%。这种 Wild 2 材料中似乎富集了 Cu、Zn 和 Ga 元素，这表明 CI 陨石可能不代表太阳系中这些中等挥发性微量元素的成分。
We measured the elemental compositions of material from 23 particles in aerogel and from residue in seven craters in aluminum foil that was collected during passage of the Stardust spacecraft through the coma of comet 81P/Wild 2. These particles are chemically heterogeneous at the largest size scale analyzed (∼180 ng). The mean elemental composition of this Wild 2 material is consistent with the CI meteorite composition, which is thought to represent the bulk composition of the solar system, for the elements Mg, Si, Mn, Fe, and Ni to 35%, and for Ca and Ti to 60%. The elements Cu, Zn, and Ga appear enriched in this Wild 2 material, which suggests that the CI meteorites may not represent the solar system composition for these moderately volatile minor elements.