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The ancient heritage of water ice in the solar system

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arxiv 1409.7398 v1 pith:Y3WIW2AD submitted 2014-09-25 astro-ph.SR

L. Ilsedore Cleeves (1) , Edwin A. Bergin (1) , Conel M. O'D. Alexander (2) , Fujun Du (1) , Dawn Graninger (3) , Karin I. Öberg (3) , Tim J. Harries (4) ((1) University of Michigan (2) Carnegie DTM (3) Harvard-Smithsonian CfA (4) University of Exeter) This is my paper
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keywords solarwatersystemdiskenvironmentsformationsourceabundant
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Identifying the source of Earth's water is central to understanding the origins of life-fostering environments and to assessing the prevalence of such environments in space. Water throughout the solar system exhibits deuterium-to-hydrogen enrichments, a fossil relic of low-temperature, ion-derived chemistry within either (i) the parent molecular cloud or (ii) the solar nebula protoplanetary disk. Utilizing a comprehensive treatment of disk ionization, we find that ion-driven deuterium pathways are inefficient, curtailing the disk's deuterated water formation and its viability as the sole source for the solar system's water. This finding implies that if the solar system's formation was typical, abundant interstellar ices are available to all nascent planetary systems.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A D/H Ratio Consistent with Earth's Water in Halley-type Comet 12P from ALMA HDO Mapping

    astro-ph.EP 2025-08 unverdicted novelty 6.0 of 10

    ALMA observations of comet 12P/Pons-Brooks yield a water D/H ratio of (1.71 ± 0.44)×10^-4, consistent with Earth's oceans.

  2. Chemistry of Dark Molecular Clouds

    astro-ph.GA 2026-07 unverdicted novelty 2.0 of 10

    A comprehensive review arguing that the chemically rich cores TMC-1 CP and L1544 are representative molecular-cloud laboratories, and that complex organic molecule production is largely insensitive to metallicity.

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