File:Anderson 2021 Planet. Sci. J. 2 50.pdf
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DescriptionAnderson 2021 Planet. Sci. J. 2 50.pdf |
English: The building blocks of Titan and Enceladus are believed to have formed in a late-stage circumplanetary disk (CPD) around Saturn. Evaluating the evolution of the abundances of volatile species in this disk as a function of the migration, growth, and evaporation of icy grains is then of primary importance to assess the origin of the material that eventually formed these two moons. Here we use a simple prescription of Saturn's CPD in which the location of the centrifugal radius is varied, to investigate the time evolution of the icelines of water ice, ammonia hydrate, methane clathrate, carbon monoxide, and dinitrogen pure condensates. To match their compositional data, the building blocks of both moons would have had to form in a region of the CPD situated between the icelines of carbon monoxide and dinitrogen at their outer limit, and the iceline of methane clathrate as their inner limit. We find that a source of dust at the location of centrifugal radius does not guarantee the replenishment of the disk in the volatiles assumed to be primordial in Titan and Enceladus. Only simulations assuming a centrifugal radius in the range 66–100 Saturnian radii allow for the formation and growth of solids with compositions consistent with those measured in Enceladus and Titan. The species are then able to evolve in solid forms in the system for longer periods of time, even reaching an equilibrium, thus favoring the formation of Titan and Enceladus's building blocks in this region of the disk. |
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https://iopscience.iop.org/article/10.3847/PSJ/abe0ba https://doi.org/10.3847/PSJ/abe0ba |
Author | Sarah E. Anderson, Olivier Mousis and Thomas Ronnet |
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Publisher | IOP Publishing |
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Software used | IOPP |
File change date and time | 16:06, 19 March 2021 |
Date and time of digitizing | 00:43, 12 March 2021 |
Date metadata was last modified | 16:06, 19 March 2021 |
Copyright status | Copyrighted |
Identifier | http://dx.doi.org/10.3847/PSJ/abe0ba |
Encrypted | no |
Page size | 612 x 792 pts (letter) |
Version of PDF format | 1.7 |