Water delivery to dry protoplanets by hit-and-run collisions

Final water inventories of newly formed terrestrial planets are shaped by their collision history. A setting where volatiles are transported from beyond the snowline to habitable-zone planets suggests collisions of very dry with water-rich bodies. By means of smooth particle hydrodynamics (SPH) simu...

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Bibliographic Details
Published inProceedings of the International Astronomical Union Vol. 14; no. S345; pp. 287 - 288
Main Authors Burger, Christoph, Maindl, Thomas I., Schäfer, Christoph
Format Journal Article
LanguageEnglish
Published Cambridge, UK Cambridge University Press 01.08.2018
Subjects
Astronomy
Collisions
Contributed Papers
Fluid dynamics
Fluid flow
Hit & run accidents
Hydrodynamics
Planet formation
Projectiles
Protoplanets
Smooth particle hydrodynamics
Snowline
Terrestrial environments
Terrestrial planets
Water delivery
methods: numerical
Hydrodynamics
planets and satellites: formation
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Summary:Final water inventories of newly formed terrestrial planets are shaped by their collision history. A setting where volatiles are transported from beyond the snowline to habitable-zone planets suggests collisions of very dry with water-rich bodies. By means of smooth particle hydrodynamics (SPH) simulations we study water delivery in scenarios where a dry target is hit by a water-rich projectile, focusing on hit-and-run encounters with two large surviving bodies, which probably comprise about half of all similar-sized collisions (Genda et al. 2017).
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921318008621