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Space Science Reviews

, Volume 106, Issue 1–4, pp 155–172 | Cite as

Isotopic Signatures of Presolar Materials in Interplanetary Dust

  • S. Messenger
  • F.J. Stadermann
  • C. Floss
  • L.R. Nittler
  • S. Mukhopadhyay
Article

Abstract

Interplanetary dust particles collected in the stratosphere frequently exhibit enrichments in deuterium (D) and 15N relative to terrestrial materials. These effects are most likely due to the preservation of presolar interstellar materials. While the elevated D/H ratios probably resulted from mass fractionation during chemical reactions at very low < 100 K temperatures, the origin of the N isotopic anomalies remains unresolved. The bulk of the N-bearing material may have obtained its isotopic signatures from low temperature chemistry, but a nucleosynthetic origin is also possible.

Keywords

Dust Fractionation Mass Fractionation Deuterium Dust Particle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • S. Messenger
    • 1
  • F.J. Stadermann
    • 1
  • C. Floss
    • 1
  • L.R. Nittler
    • 2
  • S. Mukhopadhyay
    • 2
  1. 1.Laboratory for Space Sciences, Department of PhysicsWashington UniversitySaint LouisUSA
  2. 2.Department of Terrestrial MagnetismCarnegie Institute of WashingtonWashington D.C.

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