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Constraints from deuterium on the formation of icy bodies in the Jovian system and beyond

Horner, J.; Mousis, O.; Alibert, Y.; Lunine, J. and Blanc, M. (2008). Constraints from deuterium on the formation of icy bodies in the Jovian system and beyond. Planetary And Space Science, 56(12) pp. 1585–1595.

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We consider the role of deuterium as a potential marker of location and ambient conditions during the formation of small bodies in our Solar system. We concentrate in particular on the formation of the regular icy satellites of Jupiter and the other giant planets, but include a discussion of the implications for the Trojan asteroids and the irregular satellites. We examine in detail the formation of regular planetary satellites within the paradigm of a circum-Jovian subnebula. Particular attention is paid to the two extreme potential subnebulae—“hot” and “cold”. In particular, we show that, for the case of the “hot” subnebula model, the D:H ratio in water ice measured from the regular satellites would be expected to be near-Solar. In contrast, satellites which formed in a “cold” subnebula would be expected to display a D:H ratio that is distinctly over-Solar. We then compare the results obtained with the enrichment regimes which could be expected for other families of icy small bodies in the outer Solar system—the Trojan asteroids and the irregular satellites. In doing so, we demonstrate how measurements by Laplace, the James Webb Space Telescope, HERSCHEL and ALMA will play an important role in determining the true formation locations and mechanisms of these objects.

Item Type: Journal Article
Copyright Holders: 2008 Elsevier Ltd
ISSN: 0032-0633
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 19414
Depositing User: Jonathan Horner
Date Deposited: 06 Jan 2010 11:59
Last Modified: 15 Jan 2016 12:16
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