标题： 地行星中水的起源：来自陨石数据和行星形成模型的见解 显示英文标题

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

摘要： 水在水雪线以外凝结成冰，水雪线是太阳原始气态盘中温度低于170 K的位置。随着盘的演化和冷却，雪线向内移动。 类地行星形成区域的低温不太可能是行星上水的起源，而在内盘和外盘形成的天体的显著同位素组成差异表明，内太阳系和外太阳系物质的早期混合有限。 我们类地行星中的水更可能源自内盘本地的含氢物质，并由在雪线以外形成的富含水的小行星输送，在巨行星的增长、迁移和动力演化过程中向内散射。 显示英文摘要

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.