D/H ratios of the inner Solar System.
D/H ratios of the inner Solar System.
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DOI：
10.1098/rsta.2015.0390
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发表时间：
2017-05-28
期刊：
影响因子：
--
通讯作者：
Hallis LJ
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文献类型：
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作者：
Hallis LJ
不同行星的原始氢同位素（D/H）比率可能表明每个天体在太阳系中形成的位置。然而，地质和大气过程可以随着时间的推移改变这些比例。在过去的几十年里，已经测量了来自灶神星和火星以及S型和C型小行星的陨石的D/H比。这篇文章的目的是汇集所有以前发表的数据，从这些机构，以及地球，以确定原来的D/H比为这些内太阳系行星体。当所有的次级过程都被剥离后，内太阳系的水的D/H看起来是相对均匀的，灶神星、火星、地球、S型和C型小行星的原始水的D/H比值都在δD值的−100‰和−590‰之间。这种同质性与太阳系形成的“大粘性”模型是雅阁的，在该模型中，巨大的行星迁移导致S型和C型小行星在1 Au内混合，最终形成类地行星。这篇文章是主题问题的一部分“起源，历史和水在内太阳系演化中的作用”。
The original hydrogen isotope (D/H) ratios of different planetary bodies may indicate where each body formed in the Solar System. However, geological and atmospheric processes can alter these ratios through time. Over the past few decades, D/H ratios in meteorites from Vesta and Mars, as well as from S- and C-type asteroids, have been measured. The aim of this article is to bring together all previously published data from these bodies, as well as the Earth, in order to determine the original D/H ratio for each of these inner Solar System planetary bodies. Once all secondary processes have been stripped away, the inner Solar System appears to be relatively homogeneous in terms of water D/H, with the original water D/H ratios of Vesta, Mars, the Earth, and S- and C-type asteroids all falling between δD values of −100‰ and −590‰. This homogeneity is in accord with the ‘Grand tack’ model of Solar System formation, where giant planet migration causes the S- and C-type asteroids to be mixed within 1 AU to eventually form the terrestrial planets. This article is part of the themed issue ‘The origin, history and role of water in the evolution of the inner Solar System’.