Delivery of water and volatiles to the terrestrial planets and the Moon

Abstract

From modeling the evolution of disks of planetesimals under the influence of planets, it has been shown that the mass of water delivered to the Earth from beyond Jupiter's orbit could be comparable to the mass of terrestrial oceans. A considerable portion of the water could have been delivered to the Earth's embryo, when its mass was smaller than the current mass of the Earth. While the Earth's embryo mass was growing to half the current mass of the Earth, the mass of water delivered to the embryo could be near 30% of the total amount of water delivered to the Earth from the feeding zone of Jupiter and Saturn. Water of the terrestrial oceans could be a result of mixing the water from several sources with higher and lower D/H ratios. The mass of water delivered to Venus from beyond Jupiter's orbit was almost the same as that for the Earth, if normalized to unit mass of the planet. The analogous per-unit mass of water delivered to Mars was two-three times as much as that for the Earth. The mass of water delivered to the Moon from beyond Jupiter's orbit could be less than that for the Earth by a factor not more than 20.

9 pages

References in corpus (5)

• Building Terrestrial Planets
• Origin of water in the inner Solar System: Planetesimals scattered inward during Jupiter and Saturn's rapid gas accretion
• Water Delivery and Giant Impacts in the 'Grand Tack' Scenario
• Modeling the Historical Flux of Planetary Impactors
• Constraining the Frequency of Free-Floating Planets from a Synthesis of Microlensing, Radial Velocity, and Direct Imaging Survey Results

Cited by in corpus (8)

• Migration processes in the Solar System and their role in the evolution of the Earth and planets
• Probabilities of collisions of planetesimals from different regions of the feeding zone of the terrestrial planets with the forming planets and the Moon
• Number of near-Earth objects and formation of lunar craters over the last billion years
• Delivery of icy planetesimals to inner planets in the Proxima Centauri planetary system
• Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. VI: Confirmation of a Long-Period Giant Planet Discovered with a Single TESS Transit
• Probabilities of collisions of bodies ejected from forming Earth with the terrestrial planets
• On the Efficacy of Ocean Formation with a Primordial Hydrogen Atmosphere
• Migration of celestial bodies in the Solar system and in several exoplanetary systems