V型和s型天体的北岩矿物学及其与灶神星(4)的联系

IF 3 2区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Icarus Pub Date : 2025-10-08 DOI:10.1016/j.icarus.2025.116844

B.G. Rider-Stokes , A.Y.C. Wong , T.H. Burbine , E. MacLennan , R.C. Greenwood , S.L. Jackson , M. Anand , L.F. White , M.M. Grady

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引用次数: 0

摘要

与howarite - eucite - diogenite （HED）陨石相似的未分类无球粒陨石为了解太阳系内部分化体的多样性提供了重要的见解。它们可以帮助解决与灶神星相关的v型小行星与那些表现出相似特征但缺乏动力关系的v型小行星之间长期存在的差异。在这项研究中，我们提出了新的光谱，矿物学和氧同位素分析两个未分组的球粒陨石。Al Bir Lahlou 001与典型的v型小行星具有强烈的成分和光谱相似性，而Wan Zawatin 001与s型小行星具有意想不到的亲和力。这些发现表明，分化小行星的进化史比以前认识到的要复杂得多，并支持存在多个具有hed特征的小行星体。我们的研究结果强调了继续研究未分组无球粒陨石的重要性，以更好地了解灶神星家族以外的分化物质的形成、分布和演化。

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The Noritic mineralogy of V- and S-type objects and the links with asteroid (4) Vesta

Ungrouped achondrites with affinities to Howardite-Eucrite-Diogenite (HED) meteorites offer critical insights into the diversity of differentiated bodies in the inner Solar System. They can help address the longstanding discrepancy between V-type asteroids related to the asteroid (4) Vesta and those that show similar characteristics but lack a dynamical relationship. In this study, we present new spectral, mineralogical, and oxygen isotopic analyses of two ungrouped achondritic meteorites. Al Bir Lahlou 001 exhibits strong compositional and spectral similarities to typical V-type asteroids, while Wan Zawatin 001 shows unexpected affinities to S-type asteroids. These findings suggest a more complex evolutionary history for differentiated asteroids than previously recognized and support the existence of multiple asteroidal bodies with HED-like characteristics. Our results highlight the importance of continued investigation into ungrouped achondrites to better understand the formation, distribution, and evolution of differentiated material beyond the Vesta family.

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来源期刊

Icarus 地学天文-天文与天体物理

CiteScore

6.30

自引率

18.80%

发文量

356

审稿时长

2-4 weeks

期刊介绍： Icarus is devoted to the publication of original contributions in the field of Solar System studies. Manuscripts reporting the results of new research - observational, experimental, or theoretical - concerning the astronomy, geology, meteorology, physics, chemistry, biology, and other scientific aspects of our Solar System or extrasolar systems are welcome. The journal generally does not publish papers devoted exclusively to the Sun, the Earth, celestial mechanics, meteoritics, or astrophysics. Icarus does not publish papers that provide "improved" versions of Bode''s law, or other numerical relations, without a sound physical basis. Icarus does not publish meeting announcements or general notices. Reviews, historical papers, and manuscripts describing spacecraft instrumentation may be considered, but only with prior approval of the editor. An entire issue of the journal is occasionally devoted to a single subject, usually arising from a conference on the same topic. The language of publication is English. American or British usage is accepted, but not a mixture of these.