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arXiv 2302.02674astro-ph.EPphysics.geo-ph
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类地行星中水的起源:来自陨石数据和行星形成模型的见解

Origin of Water in the Terrestrial Planets: Insights from Meteorite Data and Planet Formation Models

Andre Izidoro, Laurette Piani

摘要:

在水雪线之外,水凝结成冰,水雪线是太阳诞生时气体盘中温度低于170 K的位置。随着冰盘的演变和冷却,雪线向内移动。类地行星形成区的低温不太可能是行星上水的起源,而内外盘形成的行星天体的不同同位素组成表明太阳系内外物质的早期混合有限。我们的类地行星中的水更像是来自于内部盘的含氢物质,并由在雪线之外形成的富含水的微行星提供,这些微行星在巨行星的生长、迁移和动力学演化过程中向内分散。

英文摘要:

Water condensed as ice beyond the water snowline, the location in the Sun's natal gaseous disk where temperatures were below 170 K. As the disk evolved and cooled, the snowline moved inwards. A low temperature in the terrestrial planet-forming region is unlikely to be the origin of water on the planets, and the distinct isotopic compositions of planetary objects formed in the inner and outer disks suggest limited early mixing of inner and outer Solar System materials. Water in our terrestrial planets has rather been derived from H-bearing materials indigenous to the inner disk and delivered by water-rich planetesimals formed beyond the snowline and scattered inwards during the growth, migration, and dynamical evolution of the giant planets.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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